• 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.

Amplifier Saftey

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Wavebourn

Wavebourn

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Joined 2006
wavebourn.com
Rundmaus said:
Do spark gaps of appropriate trigger voltage do the job equally well? I would also like to protect my OPTs, but if possible without giving up the 'no semis' design idea...
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"Semis" work only and only when the amp starts clipping while output is disconnected, otherwise they are out of signal path. However, you need quite powerful and fast high voltage diodes. I used diodes that I salvaged from TV sets.
 
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