Boost Power supply

179

03:27:52

Real world action: this circuit has a 3 volt input from 2 battery cells, it outputs 5 volt @ 50 ma. Small current output, still able to charge a phone if needed.

published 11 years ago

Mamish

11 years ago

Depends on the phone, but smartphones these days eat 1-2A @ 5V, the greedy things.

faceblast

11 years ago

yeah phones draw about 5W now. tablets 10W. 250mW won't do anything. might be useful to flip a relay though

bilben08

11 years ago

Mine takes 1.8a @ 5v its a hog 3500mah

yra

11 years ago

You are right for a normal charge. This circuit can fit in a tic-tac box or a match box & 2 tripple A battery can slow charge 5 volt things.

yra

11 years ago

A few simple junk box parts & ten mins time, testing chips can be easy.

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