Non-FRC Motor Controller?

[techhelpbb]

Originally Posted by rbmj

Thanks all of you for your replies. Just so that I can get a bit of an understanding, do I need a full blown speed controller? Or can I just get a relay and pulse it at a high frequency? Forgive my inexperience with electrical work...

And just out of curiosity, most of the FRC size motors have a no-load current of about 1A. If there's only a small load on the motor, how much does this go up?

A CIM on stall will draw 120+ Amps or more.

A typical 4 CIM robot drive often sits between 25A-45A per speed controller.

You can drive a motor in a single direction with MOSFET transistor(s) easy enough.

I would not attempt to pulse a relay. You'll eventually damage the contacts.

The Innovation FIRST Spike relays are really similar in design to the electronic motor controllers (they are also H-Bridge circuits), but are no match for the larger motors. I've not tried pulsing them but as they are solid state it might work.