Autonomous Power Source Switcher

140

01:18:32

This circuit is designed to switch between two power sources.

The primary power source (5V) is the master and has priority over the secondary.
I designed this circuit to avoid battery leakage current once the 5V USB is wire to the circuit.
On the output stage you will notice a resistor in series with a capacitor. It is just to limit the loading current in the cap once the 5V is disconnected.

This design is not a final design.

I will test this on a breadboard and keep you updated on the further modifications.

published 5 years ago

tom40

5 years ago

👍

PrathikP

5 years ago

This is a nice project. Keep working on it.

PrathikP

5 years ago

There is room to make improvements. The diode in series with the 9V source is redundant; it can be removed. And try to find a way to remove the Diode in series with the 5V source.

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