ac to dc for led power pls help

239

04:11:16

hello  i want to be able to light up 40 white leds by ac 120 volt  will this work ??? or what else is needed ???  is the capaciter right ??? pls help :)

published 11 years ago

faceblast

11 years ago

that's pretty close. You'll want an isolation transformer on the mains side in case something goes wrong. each series string of leds needs a constant current source/sink on it, otherwise imperfections in each led may cause one in a series to draw more current and cause an avalanche

faceblast

11 years ago

also to protect them from dumb things on the power line like surges

rich11292000

11 years ago

It will explode because it needs to be designed for 170 volts. 120 volts is rms. Considering you didn't know that, maybe you don't know to fuse it, or that you can't touch it.

rich11292000

11 years ago

The best start is step down transformer, it will be much easier and safer to work with around 12 volts.

tiggerroo

11 years ago

120v or 170

rich11292000

11 years ago

120volts is rms 170 is peak

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