Quote:
Originally Posted by ChristianFletcher
But what is actually missing to make the frame collapse in this way
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Half the drive waveform! If you could examine the frame output waveform on a scope, you would probably only see half of the sawtooth with a very squished bottom (or top) half.
Quote:
Originally Posted by ChristianFletcher
and why would the oscillator effect the vertical height.
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Lack of drive/poor waveform....There are a number of shaping capacitors and critical time-constants going on in a frame stage and very often more than one thing can cause similar problems. There is also the cathode bypass capacitor which can cause part of the problem.