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High Power H-Bridge 2011-09-04

I just built a high power H-Bridge for my inverted pendulum project and I thought I would share it.

I was running it at 45VDC into a 12 ohm, 200W resistor with no problems (thats over 150W). I was alittle over ambitious with this H-Bridge, it turns out my servo motor for the pendulum draws <50W when running. The motor itself is capable of 200W.

There's a few things that need to be noted:
1. High voltage is lethal. attempt at your own risk.

2. This circuit generates alot of electrical noise. Opto-isolation of all logic inputs is definitly recommended. Add additional stiffening/bypass capacitors across all voltage supplies.

I'm thinking about making up a PCB for this circuit over winter break. I'll be sure to post it if I do.
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