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Arduino Magnetic Stripe Decoder
Thanks for identifying manufacturer. Will read datasheet to familiarise with that type of diodes. Big thanks for help.
Didn't find best answer, there is only feature comment option...
I always treated this devices as novelties, but maybe it is time to get one and to test how good they are.
Yes, there are other working parts. Can you suggest me how to determine type? What type of test to do?
This is not the case. Search on net, this leds are complex and are driven by Vf 20V each.For example:http://runlite.gmc.globalmarket.com/products/details/led-high-voltage-5730-five-chips-led-diode-1829171.htmlOr http://www.ledsmagazine.com/articles/print/volume-8/issue-4/features/high-voltage-leds-offer-optimum-solution-for-indoor-retrofit-lamps-magazine.html
Hi, thanks for replaying. Ok. Just opened working one, dc voltage is 190V ! So this are not ordinery leds, there are 10 leds, so voltage across each is 19V, never heard of these. This high forward voltage probably is reason why my multimeter can't check these ...PS.Just searched net, there are some sort of led series arays with 20V DC firward voltage...
Hi, thanks for replaying. Ok. Just opened working one, dc voltage is 190V ! So this are not ordinery leds, there are 19 leds, so voltage across each is 19V, never heard of these. This high forward voltage probably is reason why my multimeter can't check these ...
Testing with meter shows that cicruit is whole, led are measured as break in both directions... When desoldering led board from supply board (+&- points), two of the leds were blinking wery fainted. Supply board shows output 400 VDC and around 30VAC but ac value is varying from 11 up to 70VAC...
Opened led bulb, but every led inside is burnt out, simple design. Have three more of these bulb instaled, probably won't last long. Installed leds last year.
3d scan anything using just a camera
Cheap radiator reflectors to lower your fuel bills
Illuminate Lightbulbs Wirelessly: DIY Slayer Exciter
Great tutorial, thanks. Driled 2mm glass without problem. Used dremel, round bit with diamond coat and glass was covered with thin layer of water, abou 1cm. It took some time, but did not cracked.
Low Cost Arduino Jammer 433 Mhz
Building your own CNC router/milling machine
CNC milling stone
Make your own PCBs on an inexpensive desktop CNC mill
Easy Android controllable, PC Interfaceable Relatively Cheap Mini Quadcopter (or Octocopter!) Drone...
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Building a Daft Punk helmet with programmable LED display
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