Homemade 0-25V 3.5A Variable Power Supply (even Charges Batteries)

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Introduction: Homemade 0-25V 3.5A Variable Power Supply (even Charges Batteries)

This Power supply can charge batteries or just power things. It goes to 25V and 3.5 Amps. It is variable and has an indicator light

Step 1: Connectors

These are alligator clip connecting to the power Supply

Step 2: Parts and Components

Simple Layout

Step 3: Top

Top view

Step 4: Both

Step 5: Solder Points

Solder in this sequence

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4 Comments

Wht s input voltage? pls attach circuit diagram

it is a simple PWM. Google "555 PWM" for schematics. however, this won't survive long under a load of the advertised 87 watts. you can give this ability, but you would need to use a FET for switching and add some cooling to it. the 555 would only act as control and not as switch.

What components did you use?