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Old 7th Jun 2021, 1:04 pm   #8
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Default Re: Murphy Type V350

Quote:
Originally Posted by ChristianFletcher View Post
But what is actually missing to make the frame collapse in this way
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 View Post
and why would the oscillator effect the vertical height.
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.
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