[volt-nuts] Replacement of Mechanical choppers for precision instruments

Dr. Frank Stellmach drfrank.stellmach at freenet.de
Sun Mar 21 09:27:07 UTC 2010

If I would get a defective unit with coil or opto chopper, I would 
simply replace the complete DC-path / chopper circuitry by a simple 7650 
chopper IC.

Just add an appropriate/simple +/- 5V supply stabilization; existing 
overvolatge protection and null compensation should be sufficient.


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