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Subject: Re: PCB problems please help

Date: 11/28/01 at 3:57 PM
Posted by: Russ Kincaid
E-mail: russlk@att.net
Message Posted:

In Reply to: Re: PCB problems please help posted by Darren on 11/28/01 at 5:26 AM:

Since the LPF connects to the + input of the LM324, the LPF output went to zero also. Is it possible the feedback is causing this? Otherwise the problem may be in the AC to DC conversion. I don't understand the logic in converting to DC then amplifying, why not amplify the AC then convert to DC?


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