convert a positive voltage to a negative voltage

SgtWookie

Joined Jul 17, 2007
22,210
Yes, there are ways to do that; inductively and using a capacitor charge pump.

The capacitor charge pump method is pretty limited as to the amount of current, and you can't quite get to -10v easily.

You can get quite a bit more current using an inductor.

How much current did you need?
 

Wendy

Joined Mar 24, 2008
22,138
I've done it using a 555 feeding a voltage doubler. As Wookie suggests, your current specification is critical.
 
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