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transformerless ac to dc power supply conversion? Answered

Input of AC supply is 24v 
output wanted from in DC of 2.5amp
Without using transformer.

please help.

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snehap22

4 years ago

Thanks a lot for the concern.
But I do not want to build it.
Just want to know if it is the right. One.

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steveastrouk

4 years ago

An SMPS includes a transformer.

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snehap22steveastrouk

Answer 4 years ago

an SPMS does include a transformer and i realised my mistake we cannot use it.

also input voltage is 24v not 230v.

i have attached a circuit is that the right one.

how do i find the value of an x rated capacitor.

Transformer less AC to DC power supply circuit using dropping capacitor.png
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steveastrouksnehap22

Answer 4 years ago

This kind of circuit is deadly in amateur hands. It is NOT ISOLATED from the mains, and can kill. Hence we use transformers.

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rickharris

4 years ago

I am not sure where the question as you seem to have put the answer up your self - Switched Mode Power supply. Assuming the voltage you need is less then 230v.

If you need approximatly 230 V DC then simply rectify the mains with a bridge rectifier.


Really there is too little information here to answer the question well.

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snehap22rickharris

Answer 4 years ago

Hi thanks for the answer
All my uncle told me was he needed an AC - Dc
Converter without a transformer.
For an input voltage of 230v ac, to get an output of 2.5amp from the circuit.
Smps I gathered from my research.I am really bad at this...please help me.