[Amps] dual section cap

[Carl]

OK that explains it Jim, I thought you bought it with those markings on it.

The poor response on the small section shows it wasnt designed for a good 
minimum capacitance which would be a problem on 10M with several tubes.

I got one of those from OEP as a "sample", rebuilt it with a bit less C per 
section but 6pf min C on the small one, returned it, and had them make 
several runs for me of 10-20 at a time. They sold well.

Carl
KM1H


----- Original Message ----- 
From: "Jim Garland" <4cx250b at miamioh.edu>
To: "'Carl'" <km1h at jeremy.mv.com>; <amps at contesting.com>
Sent: Wednesday, June 25, 2014 7:07 PM
Subject: RE: [Amps] dual section cap


> Carl,
> I remeasured the cap, and the two sections are 17-63pF and 24-316 pF, 
> pretty
> much what I had measured before N years ago. A single section cap on the
> same frame would be 379 pF, or maybe a smidgen more since there would be
> coupling between two plates that are separated in the dual-section 
> version.
> I used a good quality cap meter and compensated for the lead capacitance.
> 73,
> Jim W8ZR
>
>> -----Original Message-----
>> From: Carl [mailto:km1h at jeremy.mv.com]
>> Sent: Wednesday, June 25, 2014 4:00 PM
>> To: Jim Garland
>> Subject: Re: [Amps] Buck-Boost Transformer Selection
>>
>> Jim, that OEP cap of yours got me looking and it appears that somebody
> used
>> the full value for that frame. IE; the Cardwell 154-10 is rated at 347pf
> and
>> that frame length was used for the dual section.
>>
>> Carl
>> KM1H
>>
>
>
>
>
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