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[Amps] peak voltage rating for load cap

To: amps@contesting.com
Subject: [Amps] peak voltage rating for load cap
From: Conrad PA5Y <g0ruz@g0ruz.com>
Date: Sat, 19 Aug 2017 12:07:14 +0200
List-post: <mailto:amps@contesting.com>
Hello what is the rule of thumb for conservatively estimating the required ratings for a load capacitor when used with a mono band Pi-L tank circuit?

Anode voltage 2750V

Tube design RL = 2600 ohms

Q = 12

I have searched on the internet an I cannot find any really convincing info, I have something that will stand 1200V but that is marginal and will not survive a fault I expect.

Alternatively does anyone have a small vac variable around 40-60pF that is around 3 inches/76mm? That will obviously do the job.

Also where can I buy a couple of Ohmite Z-50 chokes in Europe? Anyone got one or two that they can spare?

Regards

Conrad PA5Y


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