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Re: [Amps] Re: load capacitor ratings

To: Roy Koeppe <royanjoy@ncn.net>
Subject: Re: [Amps] Re: load capacitor ratings
From: Vic Rosenthal <vic@rakefet.com>
Date: Mon, 30 Aug 2004 15:33:01 -0700
List-post: <mailto:amps@contesting.com>
Roy Koeppe wrote:

Will, no. What you describe applies to a Pi-net, not a Pi-L. BTW, do you
have a call sign?

73, Roy K6XK

Will wrote:
>
"Simple,
Determine the voltage across the 50 ohm load from the power in watts.
Then use a load capacitor with a voltage rating equal to or up to two
times the load voltage. The tune control is two times the plate voltage
and so is the coupling capacitor."

For the Pi-L, just take the intermediate impedance used in the Pi-L design (often 300 ohms) instead of 50 ohms. You need to use the actual PEP power as it would be measured by a peak-reading wattmeter, of course, plus a safety factor.


--
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco


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