How to increase voltage from 2v to 12v?

DickCappels

Joined Aug 21, 2008
10,152
You can probably use a single transistor, a resistor, and a diode to interface a 2 volt signal to the relay, but for specific help, you need to tell us the signal levels corresponding the the relay being energized and not being energized. If possible, post a schematic of your 2 volt circuit. We also need to know either the resistance of the relay coil or the current rating of the relay coil.
 

wmodavis

Joined Oct 23, 2010
739
You can add a 10 volt battery in series. Be sure to take proper consideration of the two voltages when connecting them or else you might end up with 8 volts instead of 12.
Also see mcgyvr's reply.
 
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