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Old 26th Aug 2011, 12:48 am   #10
DangerMan
Heptode
 
Join Date: Jul 2009
Location: Stoke-on-Trent, Staffordshire, UK.
Posts: 704
Default Re: Grid coupling Capacitor aka "That" cap.

I have to admit, I do not like the popular expression "that cap", I never have, and I think this thread shows why I never use it.

The first time I ever saw it was in a Chas Miller article many years ago, which also gave it an explanation, and was rather amusing... as is Chas' style.

Since then it has been used without any explanation.

After being coined by Chas as being the coupling capacitor to the output pentode/tetrode of a standard radio set, it seems to have assumed a wider and somewhat variable meaning which is not completely clear to people who aren't "in the know", and which even obfuscates the original use.
QED.

Pete
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