[QRO] Doorknob Capacitors

[Deacon Dave]

ERRATA!!!!!

I meant to say that the ceramic is NOT suitable for PI network usage  !!!! 
SRI  :-)
----- Original Message ----- 
From: "Johnnie Walker" <keepwalking188 at yahoo.com>
To: "Deon Erwin ZS1ZL" <deon.erwin at gmail.com>
Cc: <qro at qth.net>
Sent: Monday, January 12, 2009 5:54 PM
Subject: Re: [QRO] Doorknob Capacitors


> Dear deon,
>
> Generally no is the answer.
>
> Please reference:
>
> http://www.qsl.net/i0jx/capacit.html
>
> http://www.somis.org/D-amplifiers4.html
>
> 73/jeff/ac0c
>
> Deon Erwin ZS1ZL wrote:
>> When the circuit diagram of a valve amplifier
> specifies a doorknob capacitor
>> of 1000pf at 5kV, can one substitute it for the same
> value in a ceramic disc
>> capacitor?
>>
>> If not, what is the reason?
>>
>> Thanks
>> Deon ZS1ZL
>>
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