Will it work in practical.... plz reply

157

01:16:42

Lighting up led directly from 220v 60hz AC mains

published 10 years ago

Bonnykurui

10 years ago

i dont think it will work

WTFCircuit

10 years ago

Yes if you use enough LEDs

Maqsood004

10 years ago

Can anyone plz tell me why I am getting negative voltage here

xlucian

10 years ago

Remove the bottom diode add a capacitor after the resistor to ground and you'll have positive voltage

Maqsood004

10 years ago

Thanks got it

Maqsood004

10 years ago

But will it work practically

xlucian

10 years ago

Should work. In you circuit your ac voltage is 250V...lets say to make it easy that the rectified voltage is 250. If you want 20mA on all led you will have a 200V voltage drop on the 10k resistor. You're left with 50V to use for leds. If you have leds rated at 2V you can use 25 leds in series. If you're actually going to build this...remember...mains voltage is not something to play with if you don't take precautions

rich11292000

10 years ago

FYI, 250 is not the peak voltage of your mains.

Maqsood004

10 years ago

Thanks guys

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