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- apofview made the instructable Turn Down Electrical Toy Volume
- apofview made the instructable Disassemble/repair an Olympus WS-300M Digital RecorderView Instructable »
Thanks for instructabmle. Device is realy sturdy, nothing to repair jus a check after years of use. Maybe to replace internal clock battery...
- apofview commented on mrstan's instructable Repair Dead COB LED Light BulbsView Instructable »
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
- apofview commented on mrstan's instructable Repair Dead COB LED Light Bulbs
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...
View Instructable »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 ...
- apofview commented on mrstan's instructable Repair Dead COB LED Light BulbsView Instructable »
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...
- apofview made the instructable Repair Dead COB LED Light BulbsView Instructable »
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.
- apofview commented on barefootbohemian's instructable Drilling GlassView Instructable »
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.
- apofview favorited Raspdio by univership
- apofview favorited Chess Robot by yousifnimat
220 ohm do nice job. Thank You.