{"title":"Opto","description":"\u003cp\u003eA selection of optoelectronic devices including LEDs, LDRs, photodiodes, lenses, and bulbs.\u003c\/p\u003e","products":[{"product_id":"grain-of-wheat-miniature-light-bulb-lamps-wire-leads-3v-or-6-volt","title":"Grain Of Wheat Miniature Light Bulb Lamps Wire Leads 3V Or 6 Volt","description":"\u003cp\u003eThis is one item of new wire-ended bulb available in 3V and 6V versions and packs of 1, 5, or 10 bulbs. The operational current is 65mA in both cases. The glass envelope diameter is approximately 3 x 7mm and the wire leads are 110mm. There are a few applications where you might prefer these to using LEDs such as:\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e* In modelmaking where the traditional colour of a tungsten filament lamp is desired, rather than the bluish light obtained from white LEDs. This is especially pronounced when running at less than full power. These bulbs also provide illumination all round which is difficult to obtain with a single LED, due their natural one-sided nature and lens focussed packaging.\u003c\/p\u003e\n\u003cp\u003e* In low voltage A.C. applications where LEDs would flicker and suffer excess reverse voltage. Maybe this would be useful in model railways.\u003c\/p\u003e\n\u003cp\u003e* Replacement bulb for scale illumination in old tuners, oscilloscopes, and radios etc\u003c\/p\u003e\n\u003cp\u003e* Replacement bulb for indicators in vintage equipment e.g. the stereo pilot indicator in old tuners where the slower turn-on and turn-off of a filament bulb rather than the instantaneous behaviour of an LED is desired.\u003c\/p\u003e\n\u003cp\u003eI test each of these before sending so you should never receive a dud.\u003c\/p\u003e","brand":"HJW Electronics","offers":[{"title":"3V \/ 1 Bulb","offer_id":58820406116736,"sku":null,"price":2.8,"currency_code":"GBP","in_stock":true},{"title":"3V \/ 5 Bulbs","offer_id":58820406149504,"sku":null,"price":4.8,"currency_code":"GBP","in_stock":true},{"title":"3V \/ 10 Bulbs","offer_id":58820406182272,"sku":null,"price":7.8,"currency_code":"GBP","in_stock":true},{"title":"6V \/ 1 Bulb","offer_id":58820406215040,"sku":null,"price":2.8,"currency_code":"GBP","in_stock":true},{"title":"6V \/ 5 Bulbs","offer_id":58820406247808,"sku":null,"price":4.8,"currency_code":"GBP","in_stock":true},{"title":"6V \/ 10 Bulbs","offer_id":58820406280576,"sku":null,"price":7.8,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1007\/2136\/1280\/files\/3v_6v_group_s.jpg?v=1788179105"},{"product_id":"festoon-lamp-12v-or-24-volt-5w-tubular-car-courtesy-light-number-plate-bulb","title":"Festoon Lamp 12V or 24 Volt 5W Tubular Car Courtesy Light Number Plate Bulb","description":"\u003cp\u003eThis is one item of 5 Watt tubular lamp often seen illuminating car number plates or in the internal lighting, available in 12V or 24V versions and packs of 1, 5, or 10. The overall length measures 39.6mm. The ends caps are 8.4mm diameter and the diameter of the glass tube is 10.3mm. The exposed length of the glass part is 22mm. If you would like to mix the voltages in a pack, please select the mixed pack option and send me a site message with the numbers that you need of each.\u003c\/p\u003e\n\u003cp\u003eI test each of these before dispatch so you should never receive a dud.\u003c\/p\u003e\n\u003cp\u003eCurrent draw of the 12V version is 0.36 Amps at 12.0 V.D.C. and 0.38 Amps at 13.8 V.D.C.\u003cbr\u003eCurrent draw of the 24V version is 0.18 Amps at 24.0 V.D.C. and 0.20 Amps at 27.6 V.D.C.\u003c\/p\u003e","brand":"HJW Electronics","offers":[{"title":"12V \/ 1 Bulb","offer_id":58820247650688,"sku":null,"price":1.8,"currency_code":"GBP","in_stock":true},{"title":"12V \/ 5 Bulbs","offer_id":58820247683456,"sku":null,"price":4.8,"currency_code":"GBP","in_stock":true},{"title":"12V \/ 10 Bulbs","offer_id":58820247716224,"sku":null,"price":7.8,"currency_code":"GBP","in_stock":true},{"title":"24V \/ 1 Bulb","offer_id":58820247748992,"sku":null,"price":1.8,"currency_code":"GBP","in_stock":true},{"title":"24V \/ 5 Bulbs","offer_id":58820247781760,"sku":null,"price":4.8,"currency_code":"GBP","in_stock":true},{"title":"24V \/ 10 Bulbs","offer_id":58820247814528,"sku":null,"price":7.8,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1007\/2136\/1280\/files\/group_hoz_top_s.jpg?v=1788178270"},{"product_id":"mes-e10-torch-light-bulb-flashlight-indicator-lamp-various-voltages-and-currents","title":"MES E10 Torch Light Bulb, Flashlight, Indicator Lamp Various Voltages and Currents","description":"\u003cp\u003eThese are various types and quantities of standard low voltage miniature screw-in light bulb as selected on the drop-down boxes. They are the 10mm E10 M.E.S. size.\u003c\/p\u003e\n\u003cp\u003eThe one shown lit in the final picture and the video is the 1.5V 0.3A variant and does not come with the battery and bulbholder. If you'd like to mix the types available in one of the packs of five or ten, please use the MIX variation send me a site message specifying which ones you would like.\u003c\/p\u003e\n\u003cp\u003eThe low current 6V 0.04A type is used in the \"Learnabout: Simple Electronics\" Ladybird book.\u003c\/p\u003e\n\u003cp\u003eIf your bulb is specified in mA then 0.04A = 40mA, 0.1A = 100mA etc.\u003c\/p\u003e\n\u003cp\u003eI test each one of these before dispatch so you should never receive a dud.\u003c\/p\u003e","brand":"HJW Electronics","offers":[{"title":"1.2V - 0.15A \/ 1 Bulb","offer_id":58841261572480,"sku":null,"price":1.8,"currency_code":"GBP","in_stock":true},{"title":"1.2V - 0.15A \/ 5 Bulbs","offer_id":58841261605248,"sku":null,"price":4.8,"currency_code":"GBP","in_stock":true},{"title":"1.2V - 0.15A \/ 10 Bulbs","offer_id":58841261638016,"sku":null,"price":7.8,"currency_code":"GBP","in_stock":true},{"title":"1.2V - 0.2A Lens End \/ 1 Bulb","offer_id":58841316622720,"sku":null,"price":1.8,"currency_code":"GBP","in_stock":true},{"title":"1.2V - 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0.3A \/ 10 Bulbs","offer_id":58841262522752,"sku":null,"price":7.8,"currency_code":"GBP","in_stock":true},{"title":"12.0V - 0.1A \/ 1 Bulb","offer_id":58841262555520,"sku":null,"price":1.8,"currency_code":"GBP","in_stock":true},{"title":"12.0V - 0.1A \/ 5 Bulbs","offer_id":58841262588288,"sku":null,"price":4.8,"currency_code":"GBP","in_stock":true},{"title":"12.0V - 0.1A \/ 10 Bulbs","offer_id":58841262621056,"sku":null,"price":7.8,"currency_code":"GBP","in_stock":true},{"title":"12.0V - 0.2A \/ 1 Bulb","offer_id":58841262653824,"sku":null,"price":1.8,"currency_code":"GBP","in_stock":true},{"title":"12.0V - 0.2A \/ 5 Bulbs","offer_id":58841262686592,"sku":null,"price":4.8,"currency_code":"GBP","in_stock":true},{"title":"12.0V - 0.2A \/ 10 Bulbs","offer_id":58841262719360,"sku":null,"price":7.8,"currency_code":"GBP","in_stock":true},{"title":"MIX - Send Message \/ 1 Bulb","offer_id":58841262752128,"sku":null,"price":1.8,"currency_code":"GBP","in_stock":false},{"title":"MIX - Send Message \/ 5 Bulbs","offer_id":58841262784896,"sku":null,"price":4.8,"currency_code":"GBP","in_stock":true},{"title":"MIX - Send Message \/ 10 Bulbs","offer_id":58841262817664,"sku":null,"price":7.8,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1007\/2136\/1280\/files\/group_caps_s.jpg?v=1788352246"},{"product_id":"pre-wired-led-5v-to-6-volt-3mm-diameter-clear-high-brightness-constant-leds","title":"Pre-Wired LED 5V To 6 Volt 3mm Diameter Clear High Brightness Constant LEDs","description":"\u003cp\u003eThis is a pack of 1, 5, or 10 items of 3mm diameter LED with 20cm wire leads with a resistor for five to six Volt operation fitted into the leads. Nominal current at 6V is 20mA. The lit pictures are taken using a 6V battery pack comprising four AA cells. One LED will run for about 130 hours on Duracell or similar good quality AA alkaline cells. Ten LEDs will run for more than ten hours on such a battery pack. The violet type will show up day-glo fluorescent items and markers but not special banknote inks. Slightly larger 5mm types are available on another listing in my shop.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eThe yellow colour is not quite as bright as the others due to a peculiarity of the physics involved in the silicon LED process.\u003cbr\u003e\u003cbr\u003eThe batteries and pack shown for demonstration purposes in the video are not included.\u003cbr\u003e\u003cbr\u003eIf using a power supply it needs to be a regulated type. Nominally 6V train set transformers and old battery chargers providing rectified a.c. at a peak voltage higher than 7V will kill the LEDs. Operation from the 5V rail of computer PSUs or 5V USB VBus is good, and for one LED a 20mA 5V logic output equally so. The colours available are red, orange, yellow, green, blue, violet, pink, warm white, and white.\u003c\/p\u003e","brand":"HJW Electronics","offers":[{"title":"Red \/ 1 LED","offer_id":58742055338368,"sku":"LED 3MM 6V CONST RED Q1","price":1.9,"currency_code":"GBP","in_stock":true},{"title":"Red \/ 5 LEDs","offer_id":58742055371136,"sku":"LED 3MM 6V CONST RED Q5","price":4.9,"currency_code":"GBP","in_stock":true},{"title":"Red \/ 10 LEDs","offer_id":58742055403904,"sku":"LED 3MM 6V CONST RED Q10","price":7.9,"currency_code":"GBP","in_stock":true},{"title":"Orange \/ 1 LED","offer_id":58742055436672,"sku":"LED 3MM 6V CONST ORANGE Q1","price":1.9,"currency_code":"GBP","in_stock":true},{"title":"Orange \/ 5 LEDs","offer_id":58742055469440,"sku":"LED 3MM 6V CONST ORANGE Q5","price":4.9,"currency_code":"GBP","in_stock":true},{"title":"Orange \/ 10 LEDs","offer_id":58742055502208,"sku":"LED 3MM 6V CONST ORANGE Q10","price":7.9,"currency_code":"GBP","in_stock":true},{"title":"Yellow \/ 1 LED","offer_id":58742055534976,"sku":"LED 3MM 6V CONST YELLOW Q1","price":1.9,"currency_code":"GBP","in_stock":true},{"title":"Yellow \/ 5 LEDs","offer_id":58742055567744,"sku":"LED 3MM 6V CONST YELLOW Q5","price":4.9,"currency_code":"GBP","in_stock":true},{"title":"Yellow \/ 10 LEDs","offer_id":58742055600512,"sku":"LED 3MM 6V CONST YELLOW Q10","price":7.9,"currency_code":"GBP","in_stock":true},{"title":"Green \/ 1 LED","offer_id":58742055633280,"sku":"LED 3MM 6V CONST GREEN Q1","price":1.9,"currency_code":"GBP","in_stock":true},{"title":"Green \/ 5 LEDs","offer_id":58742055666048,"sku":"LED 3MM 6V CONST GREEN Q5","price":4.9,"currency_code":"GBP","in_stock":true},{"title":"Green \/ 10 LEDs","offer_id":58742055698816,"sku":"LED 3MM 6V CONST GREEN Q10","price":7.9,"currency_code":"GBP","in_stock":true},{"title":"Blue \/ 1 LED","offer_id":58742055731584,"sku":"LED 3MM 6V CONST BLUE Q1","price":1.9,"currency_code":"GBP","in_stock":true},{"title":"Blue \/ 5 LEDs","offer_id":58742055764352,"sku":"LED 3MM 6V CONST BLUE Q5","price":4.9,"currency_code":"GBP","in_stock":true},{"title":"Blue \/ 10 LEDs","offer_id":58742055797120,"sku":"LED 3MM 6V CONST BLUE Q10","price":7.9,"currency_code":"GBP","in_stock":true},{"title":"Violet \/ 1 LED","offer_id":58742055829888,"sku":"LED 3MM 6V CONST VIOLET Q1","price":1.9,"currency_code":"GBP","in_stock":true},{"title":"Violet \/ 5 LEDs","offer_id":58742055862656,"sku":"LED 3MM 6V CONST VIOLET Q5","price":4.9,"currency_code":"GBP","in_stock":true},{"title":"Violet \/ 10 LEDs","offer_id":58742055895424,"sku":"LED 3MM 6V CONST VIOLET Q10","price":7.9,"currency_code":"GBP","in_stock":true},{"title":"Pink \/ 1 LED","offer_id":58742055928192,"sku":"LED 3MM 6V CONST PINK Q1","price":1.9,"currency_code":"GBP","in_stock":true},{"title":"Pink \/ 5 LEDs","offer_id":58742055960960,"sku":"LED 3MM 6V CONST PINK Q5","price":4.9,"currency_code":"GBP","in_stock":true},{"title":"Pink \/ 10 LEDs","offer_id":58742055993728,"sku":"LED 3MM 6V CONST PINK Q10","price":7.9,"currency_code":"GBP","in_stock":true},{"title":"Warm White \/ 1 LED","offer_id":58742056026496,"sku":"LED 3MM 6V CONST WARM Q1","price":1.9,"currency_code":"GBP","in_stock":true},{"title":"Warm White \/ 5 LEDs","offer_id":58742056059264,"sku":"LED 3MM 6V CONST WARM Q5","price":4.9,"currency_code":"GBP","in_stock":true},{"title":"Warm White \/ 10 LEDs","offer_id":58742056092032,"sku":"LED 3MM 6V CONST WARM Q10","price":7.9,"currency_code":"GBP","in_stock":true},{"title":"White \/ 1 LED","offer_id":58742056124800,"sku":"LED 3MM 6V CONST WHITE Q1","price":1.9,"currency_code":"GBP","in_stock":true},{"title":"White \/ 5 LEDs","offer_id":58742056157568,"sku":"LED 3MM 6V CONST WHITE Q5","price":4.9,"currency_code":"GBP","in_stock":true},{"title":"White \/ 10 LEDs","offer_id":58742056190336,"sku":"LED 3MM 6V CONST WHITE Q10","price":7.9,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1007\/2136\/1280\/files\/3mm_6v_legend_s.jpg?v=1787246956"},{"product_id":"neon-indicator-panel-lamp-bulb-12mm-round-220-to-250-vac-mains-33b","title":"Neon Indicator Panel Lamp Bulb 12mm Round 220 To 250 VAC Mains 33B","description":"This is one item of new neon panel indicator lamp intended for use on 220 to 250 V.A.C. mains voltage. The panel hole required is 10mm diameter. Retention is by the plastic spring parts at the side. Connection is via 6.35mm 0.25\" spade connectors or you can solder them. The panel thickness for normal retention using those spring parts is 0.8 to 2.0mm.","brand":"HJW Electronics","offers":[{"title":"Red","offer_id":58820533584256,"sku":"33B RED","price":2.8,"currency_code":"GBP","in_stock":true},{"title":"Orange","offer_id":58820533617024,"sku":"33B ORANGE","price":2.8,"currency_code":"GBP","in_stock":true},{"title":"Green","offer_id":58820533649792,"sku":"33B GREEN","price":2.8,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1007\/2136\/1280\/files\/group_angle_s_2fce2faf-dac8-4dae-b10f-959612b90874.jpg?v=1788179603"},{"product_id":"flashing-pre-wired-led-3mm-12v-volt-clear-high-brightness","title":"Flashing Pre-Wired LED 3mm 12V Volt Clear High Brightness","description":"\u003cp\u003eThis is a pack of 1, 5, or 10 items of 3mm diameter flashing LED with 20cm wire leads with a resistor for 12 Volt operation fitted into the leads. Nominal current at 12V is 20mA when lit, and this averages out at 10mA due to the 50:50 flashing duty cycle. The lit pictures are taken using a 12V battery pack comprising eight AA cells. One LED will run for about 260 hours on Duracell or similar good quality AA alkaline cells. Ten LEDs will run for more than forty hours on such a battery pack. The flashing rate is between once and twice per second. When used in a group the flashing is not synchronized.\u003cbr\u003e\u003cbr\u003eOperation down at 6V is still possible on all colors with reduced brightness and approximately 50% current consumption.\u003cbr\u003e\u003cbr\u003eThe yellow color is not quite as bright as the others due to a peculiarity of the physics involved in the silicon LED process.\u003cbr\u003e\u003cbr\u003eThe batteries and pack shown for demonstration purposes in the video are not included.\u003cbr\u003e\u003cbr\u003eIf using a power supply it needs to be a regulated type. Nominally 12V train set transformers and old battery chargers providing rectified A.C. at a peak voltage higher than 12V will kill the LEDs.\u003c\/p\u003e\n\u003cp\u003eThe available colours are red, orange, yellow, green, blue, and white.\u003c\/p\u003e","brand":"HJW Electronics","offers":[{"title":"Red \/ 1 LED","offer_id":58734495400320,"sku":"3MM FLASH RED Q1","price":1.9,"currency_code":"GBP","in_stock":true},{"title":"Red \/ 5 LEDs","offer_id":58734495433088,"sku":"3MM FLASH RED Q5","price":4.9,"currency_code":"GBP","in_stock":true},{"title":"Red \/ 10 LEDs","offer_id":58734495465856,"sku":"3MM FLASH RED Q10","price":7.9,"currency_code":"GBP","in_stock":true},{"title":"Orange \/ 1 LED","offer_id":58734495498624,"sku":"3MM FLASH ORANGE Q1","price":1.9,"currency_code":"GBP","in_stock":true},{"title":"Orange \/ 5 LEDs","offer_id":58734495531392,"sku":"3MM FLASH ORANGE Q5","price":4.9,"currency_code":"GBP","in_stock":true},{"title":"Orange \/ 10 LEDs","offer_id":58734495564160,"sku":"3MM FLASH ORANGE Q10","price":7.9,"currency_code":"GBP","in_stock":true},{"title":"Yellow \/ 1 LED","offer_id":58734495596928,"sku":"3MM FLASH YELLOW Q1","price":1.9,"currency_code":"GBP","in_stock":true},{"title":"Yellow \/ 5 LEDs","offer_id":58734495629696,"sku":"3MM FLASH YELLOW Q5","price":4.9,"currency_code":"GBP","in_stock":true},{"title":"Yellow \/ 10 LEDs","offer_id":58734495662464,"sku":"3MM FLASH YELLOW Q10","price":7.9,"currency_code":"GBP","in_stock":true},{"title":"Green \/ 1 LED","offer_id":58734495695232,"sku":"3MM FLASH GREEN Q1","price":1.9,"currency_code":"GBP","in_stock":true},{"title":"Green \/ 5 LEDs","offer_id":58734495728000,"sku":"3MM FLASH GREEN Q5","price":4.9,"currency_code":"GBP","in_stock":true},{"title":"Green \/ 10 LEDs","offer_id":58734495760768,"sku":"3MM FLASH GREEN Q10","price":7.9,"currency_code":"GBP","in_stock":true},{"title":"Blue \/ 1 LED","offer_id":58734495793536,"sku":"3MM FLASH BLUE Q1","price":1.9,"currency_code":"GBP","in_stock":true},{"title":"Blue \/ 5 LEDs","offer_id":58734495826304,"sku":"3MM FLASH BLUE Q5","price":4.9,"currency_code":"GBP","in_stock":true},{"title":"Blue \/ 10 LEDs","offer_id":58734495859072,"sku":"3MM FLASH BLUE Q10","price":7.9,"currency_code":"GBP","in_stock":true},{"title":"White \/ 1 LED","offer_id":58734495891840,"sku":"3MM FLASH WHITE Q1","price":1.9,"currency_code":"GBP","in_stock":true},{"title":"White \/ 5 LEDs","offer_id":58734495924608,"sku":"3MM FLASH WHITE Q5","price":4.9,"currency_code":"GBP","in_stock":true},{"title":"White \/ 10 LEDs","offer_id":58734495957376,"sku":"3MM FLASH WHITE Q10","price":7.9,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1007\/2136\/1280\/files\/led_3mm_flash_multi_s.jpg?v=1787144401"},{"product_id":"les-filament-light-bulb-6v-or-12v-50ma-t1-5-e5-screw-in-miniature-indicator-lamp","title":"LES Filament Light Bulb 6V or 12V 50mA T1.5 E5 Screw In Miniature Lamp","description":"\u003cp\u003eThese are L.E.S. T1.5 (E5) bulbs available in 6V or 12V 50mA types, in packs of 10 bulbs. These are used for scale illumination and the stereo pilot indicator in old stereo tuners, car dashboard illumination, car radios, and Christmas fairy light decorations. If you are looking for a 6.3V LES bulb the 6V version supplied here will work fine. The 6V version has a 0.3 Watt rating and the 12V version has a 0.6 Watt rating.\u003c\/p\u003e\n\u003cp\u003eAs I understand it, L.E.S. stands for Lilliput Edison Screw.\u003c\/p\u003e","brand":"HJW Electronics","offers":[{"title":"6 Volt \/ 1 Bulb","offer_id":58763281072512,"sku":"6V LES Q1","price":1.9,"currency_code":"GBP","in_stock":true},{"title":"6 Volt \/ 5 Bulbs","offer_id":58763281105280,"sku":"6V LES Q5","price":5.9,"currency_code":"GBP","in_stock":true},{"title":"6 Volt \/ 10 Bulbs","offer_id":58763281138048,"sku":"6V LES Q10","price":9.9,"currency_code":"GBP","in_stock":true},{"title":"12 Volt \/ 1 Bulb","offer_id":58763281170816,"sku":"12V LES Q1","price":1.9,"currency_code":"GBP","in_stock":true},{"title":"12 Volt \/ 5 Bulbs","offer_id":58763281203584,"sku":"12V LES Q5","price":5.9,"currency_code":"GBP","in_stock":true},{"title":"12 Volt \/ 10 Bulbs","offer_id":58763281236352,"sku":"12V LES Q10","price":9.9,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1007\/2136\/1280\/files\/12v_vert_s.jpg?v=1787571947"},{"product_id":"neon-bulb-4mm-diameter-mains-indicator-glow-lamp","title":"Neon Bulb 4mm Diameter Mains Indicator Glow Lamp","description":"\u003cp\u003eThis is a pack of standard neon indicator bulb such as you find in mains power plug-tops and trailing sockets. The measured length of the glass is 10mm and the diameter is 4mm.\u003c\/p\u003e\n\u003cp\u003eIn the second picture showing the lit item, it is running on 240 Vac mains via a 150K 0.5W resistor. For 110V mains use a 33K resistor. The stated lifetime is 25,000 hours under these operating conditions. When fitting a replacement, note that the resistor will often be hidden under the insulation in one of the wire leads.\u003c\/p\u003e\n\u003cp\u003eTechnical Measurements on one sample:\u003c\/p\u003e\n\u003cp\u003eIn the main picture driven from 240 VAC mains with a 150k Ohm resistor in series the measured A.C. voltage across the bulb was...\u003c\/p\u003e\n\u003cp\u003e69 VAC (1.20mA current)\u003c\/p\u003e\n\u003cp\u003eMechanical data and more electrical data are shown on the data sheet in one of the pictures.\u003c\/p\u003e","brand":"HJW Electronics","offers":[{"title":"Default Title","offer_id":58501258510720,"sku":"LUMEX 4MM","price":1.8,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1007\/2136\/1280\/files\/neon_4mm_pack_w.jpg?v=1792066723"},{"product_id":"large-fresnel-magnifying-lens-plastic-magnifier-260-x-177mm-solar-firelighter","title":"Large Fresnel Magnifying Lens Plastic Magnifier 260 X 177mm Solar Firelighter","description":"This is one item of a 260 X 177mm (approximately 7 X 10.25 inch) rectangular plastic fresnel lens. It is slightly smaller than A4 paper. The focal length is approximately 30cm. The magnification is a theoretical 3X based on the focal length. The material is optical PVC. You can use these as a traditional magnifier but they have a variety of fun uses such as concentrating sunlight onto small photovoltaic solar cell batteries and setting fire to things like scout camp-fires in sunshine. The thickness measures 0.53mm. The material can be cut with strong scissors or a knife.\u003cbr\u003e\u003cbr\u003eIt's worth mentioning that these are not suitable for use as reversing or side-vision lenses on cars or trucks. You need a diverging lens for that, and they are usually specially made so that they also change the angle of vision off-centre.\u003cbr\u003e\u003cbr\u003eIt is best to keep them out of the sun when not in use. I have the credit card sized items on another listing in my etsy shop.\u003cbr\u003e\u003cbr\u003eI've used these mounted in a frame to project tight beams from infra-red or visible LEDs for light based experimental free space voice or RF link transmission systems, using another similar lens and a photodiode at the receiver end. With a keyswitch on the LED you could use it for morse-code signalling over a substantial distance like an Aldis lamp.","brand":"HJW Electronics","offers":[{"title":"Default Title","offer_id":58501258707328,"sku":"FRESNEL SUB A4","price":3.9,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1007\/2136\/1280\/files\/angle_s_a96fe68c-e9ca-421e-bdb1-edd08abaf807.jpg?v=1787495488"},{"product_id":"light-dependant-resistors-ldr-photoresistor-cds-cells-light-detector-sensor","title":"Light Dependant Resistors LDR Photoresistor CdS Cell, Light Detector Sensor","description":"\u003cp\u003eThis is a pack of 1, 5, or 10 items of miniature LDR which can replace the old Mullard ORP12 in most situations. This is smaller, just 5mm diameter which makes it ideal for combining with a 5mm LED to form a fully isolated, wide range variable resistance with low voltage offset. If you really want an analogue audio compressor or fader system to have very low distortion and very low control voltage feedthrough, this can be one way to make the variable gain core, using two devices and a linearising op-amp feedback circuit if necessary. The whole unit is coated in transparent epoxy.\u003cbr\u003e\u003cbr\u003eSpecifications: \u003cbr\u003e\u003cbr\u003eDark resistance: 1M Ohm (typ)\u003cbr\u003eMax Voltage: 150V d.c.\u003cbr\u003eMax Power: 100mW\u003cbr\u003ePeak Spectral Response: 540nm\u003cbr\u003eresistance @ 10 lux: 10-20k Ohm (typ)\u003cbr\u003eresistance @ 100 lux: 2-4k Ohm (typ)\u003c\/p\u003e","brand":"HJW Electronics","offers":[{"title":"1 LDR","offer_id":58734845165952,"sku":"LDR CHEAP Q1","price":1.9,"currency_code":"GBP","in_stock":true},{"title":"5 LDRs","offer_id":58734845198720,"sku":"LDR CHEAP Q5","price":4.9,"currency_code":"GBP","in_stock":true},{"title":"10 LDRs","offer_id":58734845231488,"sku":"LDR CHEAP Q10","price":7.9,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1007\/2136\/1280\/files\/ldr_front_s_10385ca8-041c-45df-af52-51116094319e.jpg?v=1787151923"},{"product_id":"green-fluorescent-glow-miniature-neon-bulbs-6mm-diameter-mains-indicator","title":"Green Fluorescent Glow Miniature Neon Bulb 6mm Diameter Mains Indicator","description":"This is a green neon indicator bulb such as you may find in mains tester plug-tops, transient suppressors, coffee machines, and trailing sockets etc. The maximum length of the glass is 15mm and the diameter is 6mm.\u003cbr\u003e\u003cbr\u003eIn the picture showing the lit item, it is running on 240 V.A.C. mains via a 180K 0.5W resistor where the current measured is 1.04mA. The rated current is 1.1mA. For 110V mains use a 47K resistor. The stated lifetime is 10,000 hours under these operating conditions. When fitting a replacement, note that the resistor will often be hidden under the insulation in one of the wire leads in the equipment. Failure to use a resistor will result in a blown fuse or circuit breakers opening which is to be avoided.\u003cbr\u003e\u003cbr\u003eThe data sheet shown in one of the pictures shows the following electrical characteristics;\u003cbr\u003e\u003cbr\u003eOperating Voltage (Across the actual bulb): 90V Minimum, 115V Maximum\u003cbr\u003eStarting (Strike) Voltage: 85Vac Max, 125Vdc Max\u003cbr\u003eOperating Current: 1.1mA","brand":"HJW Electronics","offers":[{"title":"Default Title","offer_id":58501260083584,"sku":"LUMEX GREEN","price":1.8,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1007\/2136\/1280\/files\/green_neon_single_s.jpg?v=1792237967"},{"product_id":"neon-panel-indicator-lamp-12mm-round-220-250-vac-mains-red-orange-green-blue-ni-1","title":"Neon Panel Indicator Lamp 12mm Round 220 250 VAC Mains Red Orange Green Blue NI-1","description":"\u003cp\u003eThis is one item of new neon panel indicator lamp intended for use on 220 to 250 V.A.C. mains voltage. The high pack quantity options are cheaper per item. If you would like to mix the available colours in a pack, please select the MIX option and send me a list of your requirements in a site message, or add a note to the order.\u003c\/p\u003e\n\u003cp\u003eThe panel hole required is 10mm diameter. Retention is by the nut and spring washer provided. Connection is via solder terminals. The panel thickness that can be accommodated is about 6mm. The lens extends 9mm from the panel surface and the body extends 30mm behind the front of the panel.\u003c\/p\u003e\n\u003cp\u003eThe Red item contains a standard neon in a red lens.\u003cbr\u003eThe Orange item contains a standard neon in an orange lens.\u003cbr\u003eThe Green item has a green cold cathode fluorescent neon in a green lens which shows green colour.\u003cbr\u003eThe Blue item has a blue cold cathode fluorescent neon in a blue lens which shows blue colour.\u003c\/p\u003e","brand":"HJW Electronics","offers":[{"title":"RED","offer_id":60033879146880,"sku":"NI RED","price":3.8,"currency_code":"GBP","in_stock":true},{"title":"ORANGE","offer_id":60033879179648,"sku":"NI YELLOW","price":3.8,"currency_code":"GBP","in_stock":true},{"title":"GREEN","offer_id":60033879212416,"sku":"NI GREEN","price":3.8,"currency_code":"GBP","in_stock":true},{"title":"BLUE","offer_id":60033879245184,"sku":"NI BLUE","price":3.8,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1007\/2136\/1280\/files\/four_angle_s.jpg?v=1791029401"},{"product_id":"miniature-neon-bulb-6mm-diameter-mains-indicator-cold-cathode-glow-lamps","title":"Miniature Neon Bulb 6mm Diameter Mains Indicator Cold Cathode Glow Lamp","description":"\u003cp\u003eThis is a pack of standard neon indicator bulb such as you find in mains power plug-tops and trailing sockets. The maximum length of the glass is 13mm and the diameter is 6.5mm.\u003c\/p\u003e\n\u003cp\u003eIn the second picture showing the lit item, it is running on 253 Vac mains via a 680K 0.5W resistor. For 110V mains use a 150K resistor. The stated lifetime is 25,000 hours under these operating conditions. When fitting a replacement, note that the resistor will often be hidden under the insualtion in one of the wire leads.\u003c\/p\u003e\n\u003cp\u003eTechnical Measurements on one sample:\u003c\/p\u003e\n\u003cp\u003eIn the main picture driven from 253 Vac mains with a 680k Ohm resistor in series the measured A.C. voltage across the bulb was:\u003c\/p\u003e\n\u003cp\u003eStandard 57 Vac (0.29mA)\u003c\/p\u003e","brand":"HJW Electronics","offers":[{"title":"1 Bulb","offer_id":58754602697088,"sku":"LUMEX 6MM Q1","price":1.9,"currency_code":"GBP","in_stock":true},{"title":"5 Bulbs","offer_id":58754602729856,"sku":"LUMEX 6MM Q5","price":4.9,"currency_code":"GBP","in_stock":true},{"title":"10 Bulbs","offer_id":58754602762624,"sku":"LUMEX 6MM Q10","price":7.9,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1007\/2136\/1280\/files\/neon_6mm_test_light_s.jpg?v=1787415845"},{"product_id":"3mm-diffused-led-12-volt-12v-pre-wired-constant","title":"3mm Diffused LED 12 Volt 12V Pre-Wired Constant","description":"\u003cp\u003eThis is one item of diffused lens 3mm diameter 12V pre-wired LED. These types have a wide viewing angle and are more suitable for use as indicators and for some decorative uses than the clear types. The resistor is fitted into the wiring. You can select any of the available colours using the variation drop-downs and get the cheaper prices per unit by selecting the five and ten pack quantities.\u003cbr\u003e\u003cbr\u003eOne LED runs at about 20mA on 12V and all will operate well down to 5V running at 4.5mA with somewhat reduced brightness. They are quite bright, so the 5V or 6V operation is easily good enough for an indicator. Operation from a small 9V battery is good at around 15mA. A 9V 550mAh Duracell Procell MN1604 (PP3) will drive one constant LED for about 36 hours. A 6V battery pack of four Duracell 'Ultra Power' MN1500(AA) will drive one LED for about 500 hours.\u003cbr\u003e\u003cbr\u003eOperation from a regulated 12V D.C. power supply is fine, but beware of train set transformers or battery chargers which provide AC or rectified AC output at a substantially higher peak voltage than the stated nominal. The LEDs will fail immediately on such supplies.\u003cbr\u003e\u003cbr\u003eWhere the pictures show the LEDs operating, the battery and clips are not included.\u003c\/p\u003e","brand":"HJW Electronics","offers":[{"title":"Red \/ 1 LED","offer_id":58740829553024,"sku":"LED 3MM RED DIF Q1","price":1.9,"currency_code":"GBP","in_stock":true},{"title":"Red \/ 5 LEDs","offer_id":58740829585792,"sku":"LED 3MM RED DIF Q5","price":4.9,"currency_code":"GBP","in_stock":true},{"title":"Red \/ 10 LEDs","offer_id":58740829618560,"sku":"LED 3MM RED DIF Q10","price":7.9,"currency_code":"GBP","in_stock":true},{"title":"Orange \/ 1 LED","offer_id":58740829651328,"sku":"LED 3MM ORANGE DIF Q1","price":1.9,"currency_code":"GBP","in_stock":true},{"title":"Orange \/ 5 LEDs","offer_id":58740829684096,"sku":"LED 3MM ORANGE DIF Q5","price":4.9,"currency_code":"GBP","in_stock":true},{"title":"Orange \/ 10 LEDs","offer_id":58740829716864,"sku":"LED 3MM ORANGE DIF Q10","price":1.9,"currency_code":"GBP","in_stock":true},{"title":"Yellow \/ 1 LED","offer_id":58740829749632,"sku":"LED 3MM YELLOW DIF Q1","price":1.9,"currency_code":"GBP","in_stock":true},{"title":"Yellow \/ 5 LEDs","offer_id":58740829782400,"sku":"LED 3MM YELLOW DIF Q5","price":4.9,"currency_code":"GBP","in_stock":true},{"title":"Yellow \/ 10 LEDs","offer_id":58740829815168,"sku":"LED 3MM YELLOW DIF Q10","price":7.9,"currency_code":"GBP","in_stock":true},{"title":"Green \/ 1 LED","offer_id":58740829847936,"sku":"LED 3MM GREEN DIF Q1","price":1.9,"currency_code":"GBP","in_stock":true},{"title":"Green \/ 5 LEDs","offer_id":58740829880704,"sku":"LED 3MM GREEN DIF Q5","price":4.9,"currency_code":"GBP","in_stock":true},{"title":"Green \/ 10 LEDs","offer_id":58740829913472,"sku":"LED 3MM GREEN DIF Q10","price":7.9,"currency_code":"GBP","in_stock":true},{"title":"Blue \/ 1 LED","offer_id":58740829946240,"sku":"LED 3MM BLUE DIF Q1","price":1.9,"currency_code":"GBP","in_stock":true},{"title":"Blue \/ 5 LEDs","offer_id":58740829979008,"sku":"LED 3MM DIF BLUE Q5","price":4.9,"currency_code":"GBP","in_stock":true},{"title":"Blue \/ 10 LEDs","offer_id":58740830011776,"sku":"LED 3MM BLUE DIF Q10","price":7.9,"currency_code":"GBP","in_stock":true},{"title":"White \/ 1 LED","offer_id":58740830044544,"sku":"LED 3MM WHITE DIF Q1","price":1.9,"currency_code":"GBP","in_stock":true},{"title":"White \/ 5 LEDs","offer_id":58740830077312,"sku":"LED 3MM WHITE DIF Q5","price":4.9,"currency_code":"GBP","in_stock":true},{"title":"White \/ 10 LEDs","offer_id":58740830110080,"sku":"LED 3MM WHITE DIF Q10","price":7.9,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1007\/2136\/1280\/files\/group_close_s.jpg?v=1787232398"},{"product_id":"flashing-led-12-volt-pre-wired-clear-high-brightness-10mm-12v-light-operates-6v-to-12v","title":"Flashing LED 12 Volt Pre Wired Clear High Brightness 10mm 12V Light Operates 6V To 12V","description":"\u003cp\u003eThis is a pack of 1, 5, or 10 items of 10mm diameter flashing LED with 20cm wire leads with a resistor for 12 Volt operation fitted into the leads. Nominal current at 12V is 20mA when lit, and this averages out at 10mA due to the 50:50 flashing duty cycle. The lit pictures are taken using a 12V battery pack comprising eight AA cells. One LED will run for about 260 hours on Duracell or similar good quality AA alkaline cells. Ten LEDs will run for more than forty hours on such a battery pack. The flashing rate is between once and twice per second. When used in a group the flashing is not synchronised.\u003c\/p\u003e\n\u003cp\u003eOperation down at 6V is still possible on all colours with reduced brightness and approximately 50% current consumption.\u003c\/p\u003e\n\u003cp\u003eIf you would like to mix the available colours in a pack of five or ten, please select the \"MIX Send Me Message\" option an send me a site message with your requirements.\u003c\/p\u003e\n\u003cp\u003eThe batteries and pack shown for demonstration purposes in the video are not included.\u003c\/p\u003e\n\u003cp\u003eIf using a power supply it needs to be a regulated type. Nominally 12V train set transformers and old battery chargers providing rectified a.c. at a peak voltage higher than 12V will kill the LEDs.\u003c\/p\u003e","brand":"HJW Electronics","offers":[{"title":"RED \/ 1 LED","offer_id":60122858783104,"sku":null,"price":1.8,"currency_code":"GBP","in_stock":true},{"title":"RED \/ 5 LEDs","offer_id":60122858815872,"sku":null,"price":4.8,"currency_code":"GBP","in_stock":true},{"title":"RED \/ 10 LEDs","offer_id":60122858848640,"sku":null,"price":7.8,"currency_code":"GBP","in_stock":true},{"title":"YELLOW \/ 1 LED","offer_id":60122858881408,"sku":null,"price":1.8,"currency_code":"GBP","in_stock":true},{"title":"YELLOW \/ 5 LEDs","offer_id":60122858914176,"sku":null,"price":4.8,"currency_code":"GBP","in_stock":true},{"title":"YELLOW \/ 10 LEDs","offer_id":60122858946944,"sku":null,"price":7.8,"currency_code":"GBP","in_stock":true},{"title":"GREEN \/ 1 LED","offer_id":60122858979712,"sku":null,"price":1.8,"currency_code":"GBP","in_stock":true},{"title":"GREEN \/ 5 LEDs","offer_id":60122859012480,"sku":null,"price":4.8,"currency_code":"GBP","in_stock":true},{"title":"GREEN \/ 10 LEDs","offer_id":60122859045248,"sku":null,"price":7.8,"currency_code":"GBP","in_stock":true},{"title":"BLUE \/ 1 LED","offer_id":60122859078016,"sku":null,"price":1.8,"currency_code":"GBP","in_stock":true},{"title":"BLUE \/ 5 LEDs","offer_id":60122859110784,"sku":null,"price":4.8,"currency_code":"GBP","in_stock":true},{"title":"BLUE \/ 10 LEDs","offer_id":60122859143552,"sku":null,"price":7.8,"currency_code":"GBP","in_stock":true},{"title":"WHITE \/ 1 LED","offer_id":60122859176320,"sku":null,"price":1.8,"currency_code":"GBP","in_stock":true},{"title":"WHITE \/ 5 LEDs","offer_id":60122859209088,"sku":null,"price":4.8,"currency_code":"GBP","in_stock":true},{"title":"WHITE \/ 10 LEDs","offer_id":60122859241856,"sku":null,"price":7.8,"currency_code":"GBP","in_stock":true},{"title":"MIX - Send Message \/ 5 LEDs","offer_id":60122859307392,"sku":null,"price":4.8,"currency_code":"GBP","in_stock":true},{"title":"MIX - Send Message \/ 10 LEDs","offer_id":60122859340160,"sku":null,"price":7.8,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1007\/2136\/1280\/files\/10mm_flash_multi_sideways.jpg?v=1791999680"},{"product_id":"pre-wired-led-5v-to-6-volt-5mm-clear-high-brightness-constant","title":"Pre-Wired LED 5V to 6 Volt 5mm Clear High Brightness Constant","description":"\u003cp\u003eThis is a pack of 5mm diameter LED with 20cm wire leads with a resistor for five to six Volt operation fitted into the leads. 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A 6V battery pack of four Duracell 'Ultra Power' MN1500(AA) will drive one LED for about 500 hours.\u003c\/p\u003e\n\u003cp\u003eOperation from a regulated 12V D.C. power supply is fine, but beware of train set transformers or battery chargers which provide a.c. or rectified a.c. output at a substantially higher peak voltage than the stated nominal. The LEDs will fail immediately on such supplies.\u003c\/p\u003e\n\u003cp\u003eWhere the pictures show the LEDs operating, the battery and clips are not included.\u003c\/p\u003e","brand":"HJW Electronics","offers":[{"title":"Red \/ 1 LED","offer_id":58823705887104,"sku":null,"price":1.8,"currency_code":"GBP","in_stock":true},{"title":"Red \/ 5 LEDs","offer_id":58823705919872,"sku":null,"price":4.8,"currency_code":"GBP","in_stock":true},{"title":"Red \/ 10 LEDs","offer_id":58823705952640,"sku":null,"price":7.8,"currency_code":"GBP","in_stock":true},{"title":"Orange \/ 1 LED","offer_id":58823705985408,"sku":null,"price":1.8,"currency_code":"GBP","in_stock":true},{"title":"Orange \/ 5 LEDs","offer_id":58823706018176,"sku":null,"price":4.8,"currency_code":"GBP","in_stock":true},{"title":"Orange \/ 10 LEDs","offer_id":58823706050944,"sku":null,"price":7.8,"currency_code":"GBP","in_stock":true},{"title":"Yellow \/ 1 LED","offer_id":58823706083712,"sku":null,"price":1.8,"currency_code":"GBP","in_stock":true},{"title":"Yellow \/ 5 LEDs","offer_id":58823706116480,"sku":null,"price":4.8,"currency_code":"GBP","in_stock":true},{"title":"Yellow \/ 10 LEDs","offer_id":58823706149248,"sku":null,"price":7.8,"currency_code":"GBP","in_stock":true},{"title":"Green \/ 1 LED","offer_id":58823706182016,"sku":null,"price":1.8,"currency_code":"GBP","in_stock":true},{"title":"Green \/ 5 LEDs","offer_id":58823706214784,"sku":null,"price":4.8,"currency_code":"GBP","in_stock":true},{"title":"Green \/ 10 LEDs","offer_id":58823706247552,"sku":null,"price":7.8,"currency_code":"GBP","in_stock":true},{"title":"Blue \/ 1 LED","offer_id":58823706280320,"sku":null,"price":1.8,"currency_code":"GBP","in_stock":true},{"title":"Blue \/ 5 LEDs","offer_id":58823706313088,"sku":null,"price":4.8,"currency_code":"GBP","in_stock":true},{"title":"Blue \/ 10 LEDs","offer_id":58823706345856,"sku":null,"price":7.8,"currency_code":"GBP","in_stock":true},{"title":"MIX Send Message \/ 5 LEDs","offer_id":58823706411392,"sku":null,"price":4.8,"currency_code":"GBP","in_stock":true},{"title":"MIX Send Message \/ 10 LEDs","offer_id":58823706444160,"sku":null,"price":7.8,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1007\/2136\/1280\/files\/5mm12v_dif_s.jpg?v=1788197934"},{"product_id":"12v-3mm-led-6v-to-12-volt-pre-wired-clear-high-brightness-constant","title":"12V 3mm LED 6V to 12 Volt Pre Wired Clear High Brightness, Constant","description":"\u003cp\u003eThis is a pack of 1, 5, or 10 items of 3mm diameter LED with 20cm wire leads with a resistor for 12 Volt D.C. operation fitted into the leads. Nominal current at 12V is 20mA. The lit pictures are taken using a 12V battery pack comprising eight AA cells. One LED will run for about 130 hours on Duracell or similar good quality AA alkaline cells. Ten LEDs will run for more than ten hours on such a battery pack. The violet type will show up day-glo fluorescent items and markers but not special banknote inks. Operation down to 6V is possible where the brightness is somewhat reduced but battery life is extended.\u003cbr\u003e\u003cbr\u003eThe yellow colour is not quite as bright as the others due to a peculiarity of the physics involved in the silicon LED process.\u003cbr\u003e\u003cbr\u003eI have 5mm and 10mm, constant and flashing types on other listings.\u003cbr\u003e\u003cbr\u003eThe batteries and pack shown for demonstration purposes in the video are not included.\u003cbr\u003e\u003cbr\u003eIf using a power supply it needs to be a regulated type. Nominally 12V train set transformers and old battery chargers providing rectified a.c. at a peak voltage higher than 12V will kill the LEDs.\u003c\/p\u003e","brand":"HJW Electronics","offers":[{"title":"Red \/ 1 LED","offer_id":58746928529792,"sku":"LED 3MM 12V CONST RED Q1","price":1.9,"currency_code":"GBP","in_stock":true},{"title":"Red \/ 5 LEDs","offer_id":58746928562560,"sku":"LED 3MM 12V CONST RED Q5","price":4.9,"currency_code":"GBP","in_stock":true},{"title":"Red \/ 10 LEDs","offer_id":58746928595328,"sku":"LED 3MM 12V CONST RED Q10","price":7.9,"currency_code":"GBP","in_stock":true},{"title":"Orange \/ 1 LED","offer_id":58746928628096,"sku":"LED 3MM 12V CONST ORANGE Q1","price":1.9,"currency_code":"GBP","in_stock":true},{"title":"Orange \/ 5 LEDs","offer_id":58746928660864,"sku":"LED 3MM 12V CONST ORANGE Q5","price":4.9,"currency_code":"GBP","in_stock":true},{"title":"Orange \/ 10 LEDs","offer_id":58746928693632,"sku":"LED 3MM 12V CONST ORANGE Q10","price":7.9,"currency_code":"GBP","in_stock":true},{"title":"Yellow \/ 1 LED","offer_id":58746928726400,"sku":"LED 3MM 12V CONST YELLOW Q1","price":1.9,"currency_code":"GBP","in_stock":true},{"title":"Yellow \/ 5 LEDs","offer_id":58746928759168,"sku":"LED 3MM 12V CONST YELLOW Q5","price":4.9,"currency_code":"GBP","in_stock":true},{"title":"Yellow \/ 10 LEDs","offer_id":58746928791936,"sku":"LED 3MM 12V CONST YELLOW Q10","price":7.9,"currency_code":"GBP","in_stock":true},{"title":"Green \/ 1 LED","offer_id":58746928824704,"sku":"LED 3MM 12V CONST GREEN Q1","price":1.9,"currency_code":"GBP","in_stock":true},{"title":"Green \/ 5 LEDs","offer_id":58746928857472,"sku":"LED 3MM 12V CONST GREEN Q5","price":4.9,"currency_code":"GBP","in_stock":true},{"title":"Green \/ 10 LEDs","offer_id":58746928890240,"sku":"LED 3MM 12V CONST GREEN Q10","price":7.9,"currency_code":"GBP","in_stock":true},{"title":"Blue \/ 1 LED","offer_id":58746928923008,"sku":"LED 3MM 12V CONST BLUE Q1","price":1.9,"currency_code":"GBP","in_stock":true},{"title":"Blue \/ 5 LEDs","offer_id":58746928955776,"sku":"LED 3MM 12V CONST BLUE Q5","price":4.9,"currency_code":"GBP","in_stock":true},{"title":"Blue \/ 10 LEDs","offer_id":58746928988544,"sku":"LED 3MM 12V CONST BLUE Q10","price":7.9,"currency_code":"GBP","in_stock":true},{"title":"Violet \/ 1 LED","offer_id":58746929021312,"sku":"LED 3MM 12V CONST VIOLET Q1","price":1.9,"currency_code":"GBP","in_stock":true},{"title":"Violet \/ 5 LEDs","offer_id":58746929054080,"sku":"LED 3MM 12V CONST VIOLET Q5","price":4.9,"currency_code":"GBP","in_stock":true},{"title":"Violet \/ 10 LEDs","offer_id":58746929086848,"sku":"LED 3MM 12V CONST VIOLET Q10","price":7.9,"currency_code":"GBP","in_stock":true},{"title":"Pink \/ 1 LED","offer_id":58746929119616,"sku":"LED 3MM 12V CONST PINK Q1","price":1.9,"currency_code":"GBP","in_stock":true},{"title":"Pink \/ 5 LEDs","offer_id":58746929152384,"sku":"LED 3MM 12V CONST PINK Q5","price":4.9,"currency_code":"GBP","in_stock":true},{"title":"Pink \/ 10 LEDs","offer_id":58746929185152,"sku":"LED 3MM 12V CONST PINK Q10","price":7.9,"currency_code":"GBP","in_stock":true},{"title":"Warm White \/ 1 LED","offer_id":58746929217920,"sku":"LED 3MM 12V CONST WARM Q1","price":1.9,"currency_code":"GBP","in_stock":true},{"title":"Warm White \/ 5 LEDs","offer_id":58746929250688,"sku":"LED 3MM 12V CONST WARM Q5","price":4.9,"currency_code":"GBP","in_stock":true},{"title":"Warm White \/ 10 LEDs","offer_id":58746929283456,"sku":"LED 3MM 12V CONST WARM Q10","price":7.9,"currency_code":"GBP","in_stock":true},{"title":"White \/ 1 LED","offer_id":58746929316224,"sku":"LED 3MM 12V CONST WHITE Q1","price":1.9,"currency_code":"GBP","in_stock":true},{"title":"White \/ 5 LEDs","offer_id":58746929348992,"sku":"LED 3MM 12V CONST WHITE Q5","price":4.9,"currency_code":"GBP","in_stock":true},{"title":"White \/ 10 LEDs","offer_id":58746929381760,"sku":"LED 3MM 12V CONST WHITE Q10","price":7.9,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1007\/2136\/1280\/files\/3mm_12v_const_group_s.jpg?v=1787306117"},{"product_id":"dashboard-indicator-light-12-volt-ac-dc-0-05a","title":"Dashboard Indicator Light 12 Volt AC DC 0.05A","description":"\u003cp\u003eThis is one item of new filament bulb panel indicator available in Red, Yellow, Green, Blue or White colours. They will work on 12V nominal AC or DC current and also on 13.8V \"12V\" vehicle supplies. Current consumption is about 50mA at 12V DC. The panel hole required is 7.5mm diameter. The lens protrudes some 5.5mm in front of the panel and the body extends 28mm behind it. Connection is by solder terminals.\u003c\/p\u003e\n\u003cp\u003eLarger pack sizes are available as shown. If you would like to mix the colours in one pack, please use the \"MIX\" option and send me a message with your requirements.\u003c\/p\u003e","brand":"HJW Electronics","offers":[{"title":"RED \/ 1 Lamp","offer_id":59998985290112,"sku":"NI-2 RED Q1","price":2.8,"currency_code":"GBP","in_stock":true},{"title":"RED \/ 5 Lamps","offer_id":59998985322880,"sku":"NI-2 RED Q5","price":5.8,"currency_code":"GBP","in_stock":true},{"title":"RED \/ 10 Lamps","offer_id":59998985355648,"sku":"NI-2 RED Q10","price":9.8,"currency_code":"GBP","in_stock":true},{"title":"YELLOW \/ 1 Lamp","offer_id":59998985388416,"sku":"NI-2 YELLOW Q1","price":2.8,"currency_code":"GBP","in_stock":true},{"title":"YELLOW \/ 5 Lamps","offer_id":59998985421184,"sku":"NI-2 YELLOW Q5","price":5.8,"currency_code":"GBP","in_stock":true},{"title":"YELLOW \/ 10 Lamps","offer_id":59998985453952,"sku":"NI-2 YELLOW Q10","price":9.8,"currency_code":"GBP","in_stock":true},{"title":"GREEN \/ 1 Lamp","offer_id":59998985486720,"sku":"NI-2 GREEN Q1","price":2.8,"currency_code":"GBP","in_stock":true},{"title":"GREEN \/ 5 Lamps","offer_id":59998985519488,"sku":"NI-2 GREEN Q5","price":5.8,"currency_code":"GBP","in_stock":true},{"title":"GREEN \/ 10 Lamps","offer_id":59998985552256,"sku":"NI-2 GREEN Q10","price":9.8,"currency_code":"GBP","in_stock":true},{"title":"BLUE \/ 1 Lamp","offer_id":59998985585024,"sku":"NI-2 BLUE Q1","price":2.8,"currency_code":"GBP","in_stock":true},{"title":"BLUE \/ 5 Lamps","offer_id":59998985617792,"sku":"NI-2 BLUE Q5","price":5.8,"currency_code":"GBP","in_stock":true},{"title":"BLUE \/ 10 Lamps","offer_id":59998985650560,"sku":"NI-2 BLUE Q10","price":9.8,"currency_code":"GBP","in_stock":true},{"title":"WHITE \/ 1 Lamp","offer_id":59998985683328,"sku":"NI-2 WHITE Q1","price":2.8,"currency_code":"GBP","in_stock":true},{"title":"WHITE \/ 5 Lamps","offer_id":59998985716096,"sku":"NI-2 WHITE Q5","price":5.8,"currency_code":"GBP","in_stock":true},{"title":"WHITE \/ 10 Lamps","offer_id":59998985748864,"sku":"NI-2 WHITE Q10","price":9.8,"currency_code":"GBP","in_stock":true},{"title":"MIX - Send Message \/ 5 Lamps","offer_id":59998985781632,"sku":"NI-2 MIX Q5","price":5.8,"currency_code":"GBP","in_stock":true},{"title":"MIX - Send Message \/ 10 Lamps","offer_id":59998985814400,"sku":"NI-2 MIX Q10","price":9.8,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1007\/2136\/1280\/files\/group_front_w_db400fbe-e126-4e7b-9a99-eab3e2ce07cf.jpg?v=1790687261"},{"product_id":"credit-card-sized-flat-plastic-magnifier-fresnel-magnifying-lens-solar-firelighter","title":"Credit Card Sized Flat Plastic Magnifier Fresnel Magnifying Lens, Solar Firelighter","description":"\u003cp\u003eThis is one item of new fresnel magnifier available in packs of 1, 5, or 10. The material is optical PVC. The plastic is 52 X 83mm and the magnifying area is 42 X 77mm. The thickness measures about 0.47mm. The focal length is about 18cm. You can just about use this to light fires on black paper in bright sunlight but it takes a bit of patience. Of course you can use this as a pocket magnifier, or more interestingly I've used these to project tight beams from infra-red or visible LEDs for light based experimental free space voice or RF link transmission systems, using another similar lens and a photodiode at the receiver end.\u003c\/p\u003e\n\u003cp\u003eIn one of the pictures a spot of light is projected onto my wall some 3 metres distant from a simple 5mm bright green LED running at about 18mA. Looking at this from the far end, the single LED and lens combination is impressively bright, like a railway signal. With a keyswitch on the LED you could use it for morse-code signalling over a substantial distance like an Aldis lamp.\u003c\/p\u003e","brand":"HJW Electronics","offers":[{"title":"1 Lens","offer_id":58759461929344,"sku":null,"price":1.9,"currency_code":"GBP","in_stock":true},{"title":"5 Lenses","offer_id":58759461962112,"sku":null,"price":4.9,"currency_code":"GBP","in_stock":true},{"title":"10 Lenses","offer_id":58759461994880,"sku":null,"price":7.9,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1007\/2136\/1280\/files\/cc_top_s.jpg?v=1787504984"},{"product_id":"tubular-neon-stroboscope-timing-bulb-in-24","title":"Tubular Neon Stroboscope Timing Bulb IN-24","description":"This is a pack of 1, 5 or 10 items of tubular neon bulb such as you might find in 1970s record players or where the glow is used against a striped pattern on the turntable to check the speed. The length measures 36.4mm, the glass diameter is 6.25mm and the diameter of the end caps is 7.0mm.\u003cbr\u003e\u003cbr\u003eIn the picture and video showing the lit item, it is running on 250 VAC mains* via an 82K 0.6W metal film resistor where the current is 1.52mA and the voltage measured across the neon is 124VAC. When fitting a replacement, note that the resistor will often be hidden under the insulation in one of the wire leads. That resistor value is suitable for any mains voltage from 220 to 250 VAC.\u003cbr\u003e\u003cbr\u003eIf driven from a D.C. voltage, only one side will glow depending on the polarity. This might lead to cunning uses in neon display clocks or valve radio tuning indicators\u003cbr\u003e\u003cbr\u003eThe higher than usual voltage across the bulb suggests that these will not work well on 110V. These parts originally came from Lithuania and are of 1980s Soviet vintage.","brand":"HJW Electronics","offers":[{"title":"1 Neon","offer_id":59903921160576,"sku":"NEON TUB IN-24 Q1","price":2.8,"currency_code":"GBP","in_stock":true},{"title":"5 Neons","offer_id":59903921193344,"sku":"NEON TUB IN-24 Q5","price":6.8,"currency_code":"GBP","in_stock":true},{"title":"10 Neons","offer_id":59903921226112,"sku":"NEON TUB IN-24 Q10","price":9.8,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1007\/2136\/1280\/files\/in24_square_w.jpg?v=1789578574"},{"product_id":"3mm-6v-low-current-grain-of-wheat-light-bulb-16ma-0-1-watt-vdr","title":"3mm 6V Low Current Grain of Wheat Light Bulb 16mA 0.1 Watt VDR","description":"\u003cp\u003eThis is an unused miniature lamp supplied in quantities of 5. They run at full brightness at 6.3V at which voltage they take just 16mA. There is still a dull glow at 2V. The glass diameter is 3mm by 6mm long. These could be useful in several situations.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eIn modelmaking where the traditional colour of a tungsten filament lamp is desired, rather than the bluish light obtained from white LEDs. This is especially pronounced when running at less than full power. These bulbs also provide illumination all round which is difficult to obtain with a single LED, due their natural one-sided nature and lens focussed packaging.\u003cbr\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eIn 6V a.c. applications where LEDs would flicker and suffer excess reverse voltage. Maybe this would be useful in model railways.\u003cbr\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eAs a light dependent resistor driver in vintage audio compressors.\u003cbr\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eAs a VDR voltage dependent resistor in transistor or op-amp oscillators where they can be used in a feedback loop to stabilise the output voltage. The presence of a slight glow at just 2V d.c.indicates that these could be quite suitable for that, in the right circuit.\u003cbr\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eReplacement bulb for scale illumination in old tuners, oscilloscopes, and radios etc.\u003cbr\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eReplacement bulb for indicators in vintage equipment e.g. the stereo pilot indicator in old tuners where the slower turn-on and turn-off of a filament bulb rather than the instantaneous behaviour of an LED is desired.\u003cbr\u003e\u003cbr\u003eThe wires on these are bight and shiny so they are easily soldered without scraping. The cold resistance is approximately 43 Ohms. The resistance running at 6V is approximately 375 Ohms.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HJW Electronics","offers":[{"title":"5 Bulbs","offer_id":60009706619264,"sku":null,"price":3.8,"currency_code":"GBP","in_stock":true},{"title":"10 Bulbs","offer_id":60009706652032,"sku":null,"price":6.6,"currency_code":"GBP","in_stock":true},{"title":"15 Bulbs","offer_id":60009706684800,"sku":null,"price":9.3,"currency_code":"GBP","in_stock":true},{"title":"20 Bulbs","offer_id":60009706717568,"sku":null,"price":11.7,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1007\/2136\/1280\/files\/q5_angle_s.jpg?v=1790787893"},{"product_id":"mes-bulb-holder-e10-batten-mounting-lamp-holder-white","title":"MES Bulb Holder E10 Batten Mounting Lamp Holder White","description":"This is one item of E10 M.E.S. white plastic bulbholder. Packs of 1, 5, and 10 are available. Where shown, the bulbs and batteries are for demonstration purposes and are not included in the pack.","brand":"HJW Electronics","offers":[{"title":"1 Bulbholder","offer_id":60137782182272,"sku":"MES WHITE Q1","price":1.8,"currency_code":"GBP","in_stock":true},{"title":"5 Bulbholders","offer_id":60137782215040,"sku":"MES WHITE Q5","price":6.8,"currency_code":"GBP","in_stock":true},{"title":"10 Bulbholders","offer_id":60137782247808,"sku":"MES WHITE Q10","price":9.8,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1007\/2136\/1280\/files\/angle_2_s.jpg?v=1792171536"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1007\/2136\/1280\/collections\/opto_11.jpg?v=1787146149","url":"https:\/\/shop.usefulcomponents.com\/collections\/opto.oembed?page=2","provider":"HJW Electronics","version":"1.0","type":"link"}