[sdiy] PWM Outputs

Magnus Danielson magnus at rubidium.dyndns.org
Sun Nov 7 22:50:48 CET 2010


On 11/07/2010 07:00 PM, Tom Wiltshire wrote:
> The most elegant way around this problem that I've seen is what I think of as "the Chroma solution".
> The Rhodes Chroma mixed the PWM CV into the PWM output to remove the DC offset.
> If you did it this way you could DC-couple the outputs, and the average DC level would be constant.

I was just about to propose the same solution. I used the same trick in 
the sawtooth phase-shifter. The neat thing is that it almost completely 
cancels the DC offset as long as the CV is maintained within the active 
PWM range.

Cheers,
Magnus



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