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

[Steve Thompson]

-----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%?

Thanks,

Steve


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