• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

Audio Research SP-11 HV Regulator

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jackinnj

jackinnj

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Joined 2002
tech-diy.com
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Getting back to this. Here's the HV Regulator in its original form:

An externally hosted image should be here but it was not working when we last tested it.


When I ran the bode plot, it looked a little lumpy and I thought it might be overly fussy compensation and snubberizing. I eliminated these networks a la, and added compensation to the lower leg of the potential divider:

An externally hosted image should be here but it was not working when we last tested it.


So here are the before and after bode plots:

An externally hosted image should be here but it was not working when we last tested it.
 
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