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Electronics => Electronics => Topic started by: Its_Friday on March 11, 2009, 03:44:39 PM

Title: Simple ground question
Post by: Its_Friday on March 11, 2009, 03:44:39 PM

I'm trying to make a circuit board that has a quadruple half h-bridge chip. There's a 12V power source, a 5V power source, and 4 PWM pins. Can they all share a common ground?

Title: Re: Simple ground question
Post by: Razor Concepts on March 11, 2009, 03:45:39 PM

Yes. Actually, they are supposed to all share a common ground.

Title: Re: Simple ground question
Post by: HDL_CinC_Dragon on March 12, 2009, 03:28:26 PM

ALWAYS have common grounds!

Title: Re: Simple ground question
Post by: Soeren on March 12, 2009, 11:42:24 PM

Except where there's a reason not to ;)

Title: Re: Simple ground question
Post by: householdutensils on March 12, 2009, 11:43:02 PM

Big Common Ground == Low Impedance == Less Noise