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transformerless power supply gave me a good shock!

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ambrose

New Member
:x

i made a timer using cd4541 .using a transformerless power supply.i assembled it in aadopter like casing(charger type).like it fixes to the plugpoint .


the problem is

when i took the adopter(ie casing ) and touch the two pins(neutral and hot one). it gave me a nasty shock i just literally throwed the thing.

i used .22uf 400V.cap.this is taking the residue current.

please help me to rectify this problem as i arranged to produce in lot.
 

panic mode

Well-Known Member
residue current

I guess you played with it after unplugging device from the mains.
What happened is capacitor stayed charged. Try putting resistor
accross capacitor. Maybe 100K 1/2Watt etc so capacitor can discharge
after unplugging unit from the wall.
 

ambrose

New Member
thank u

accross means join the both end of resistor to the two end of the capacitor or join next to it.(iejoin in series)
 
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