>
>
>-----Original Message-----
>From: measures <2@vc.net>
>To: amps <amps@contesting.com>
To: <amps@contesting.com>
>Date: 08 September 2000 05:51
>Subject: Re: [AMPS] Blown TL922A... What to do?
>snip
>
>
>>>Has anyone been able to measure the frequency of oscillation in, for
>>>example, TL922?
>>
>>The only case I have knowledge of involved loosely coupling a spectrum
>>analyzer to the anodes of a seemingly stable* SB-220. Whenever
>>anode-current changed, damped wave ringing at c. 110MHz was observed.
>>/*note: no bandswitch or Tune-C arcing took place during the test/
>>
>>>What dip frequencies are found with a GDO in a 922?
>>
>>Measuring at the dc blocking C, typically c. 120MHz. There is a slight
>>variation depending on the setting of C-tune.
>A few%, 10%, 25%?
>
As I recall, the variation was a few MHz.
>
later, Steve
- Rich..., 805.386.3734, www.vcnet.com/measures.
end
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