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12v 3a Transformerless Power Supply

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How about output current that can reach at least 1-1.5A?

What do you think?

Is it possible?

I didn't say it's impossible, just that it isn't practical. It's theoretically possible. Do the calculations and you'll see what I'm getting at.

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The capacitor will have AC across it, not DC so you cannot use a polarized electrolytic capacitor.

I could not find a film capacitor rated at 47uF/400VAC anywhere. They were available 60 years ago, were very large and very expensive. But transformers are inexpensive and are available everywhere today.

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