DIY LED Light Bulb
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Uploader Comments (engineer21261)
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All Comments (12)
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I am Iron Man!
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thanks mate! clever piece of tool :)
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@jsmneo10 Hi its called a variac which is a variable ratio transformer mains in 0 to 270Volts out - this one is ex equipment mounted in a home made cabinet. very useful bit of kit!
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hi, what do you call that thing to adjust voltage?
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I love your Brain/ D I Y tutoring-but; not the noise! When speaking please turn off the background noise. Could you also place all of the items you are filming closer together. Smart D I Y!
robinrwilsonsauls 3 months ago
@robinrwilsonsauls Thanks!
engineer21261 3 months ago
Hi, can u mention the details of that AC-DC bridge circuit? I mean, the schematic of the bridge itself???
lbaidya 3 months ago
@lbaidya The AC/DC bridge is a standard bridge rectifier - anything rated for at least 400V would be suitable I used a w08 type rectifier but this is not critical in fact 4 1n4007 connected as a bridge rectifier would be more than suitable. if you need a schematic for a bridge rectifier then I would recommend consulting an electronics text book or web search - or just use a packaged bridge rectifier - hope this helps
engineer21261 3 months ago
where are you using the light bulb now? and is it dimmable?
poiiihy 4 months ago
@poiiihy The bulb is used in the standard lamp shown in the video. Yes this type of LED lamp is dimmable but due to the high forward voltage of the LED string there will be a dead zone using a standard dimmer where there will be no light output.
engineer21261 4 months ago