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Old 29th Apr 2013, 8:22 am   #25
Radio Wrangler
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Join Date: Mar 2012
Location: Fife, Scotland, UK.
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Default Re: Grid coupling Capacitor aka "That" cap.

Rather a lot of stages have DC blocking capacitors feeding their control grids, but it's really the power stages like audio outputs and line scan outputs where the valve can pass enough current for such a scale of damage.

Like QQV06-40, I always assumed that 'That capacitor' was the expurgated version

David
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