[AMPS] Blown TL922A... What to do?

[measures]

>
>    
>-----Original Message-----
>From: measures <2@vc.net>
>To: amps <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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