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DC-DC Converter

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Suraj143

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Hi i have a 12v dc supply.I need 5v/500ma from it.if i use 7805 it will waste more power as heat.

Is there any way to get 5v very efficiently?
 
Hi Carl that's what I needed thanks for that.

The problem is is there any way to get 5V/1.5A from that design Carl ? What changes do I have to do?

2-transistor Black Regulator

I tried to contact Mr RB there is no way to contact him.
 
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