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1st March 2008, 09:17 PM
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diyAudio Member
Join Date: Jan 2008
Location: Southern California
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What is the safest method to plot characteristic curves without ruining the tubes
I am new to tubes and I have built a rig to test tubes and circuit configurations. I wish to understand the methods of doing manual curve plotting past the Plate dissipation value. I wish to do this for non published operating values, specifically for AB1 push pull applications which from what I have readn and understand, will allow temporary surges above Pd.
I have tried with a few pentodes, but I end up seeing sparkles and having oscillations on the tubes. Is it actually possible without some type of on off sequencing to average the dissipation? Alfredo |
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