[Amps] TL-922 question

[R L Measures]

On Aug 29, 2006, at 9:01 AM, Peter Chadwick wrote:

> Rich said:
>
> >> It could be that a present padder cap has opened up
>
> In my experiences, they don't open, they short because the dielectric
> punches through.<
>
> I have had two ceramic tx caps go open - the voltage rating was OK,  
> but the things heated up and burnt the silvering away without  
> apparently punching through. That wasn't on a TL922 though, and  
> mostly, the failures I've seen have been dielectric failures as  
> Rich says. But not invariably.

Agreed, Peter.  The "Plywood Box" amplifier melted several droplets  
of silver solder out of a 200pF, 7500wv doorknob cap, but that was  
not a typical case.
>
> 'There are more things in heaven and earth Horatio, than are dreamt  
> of in your philosophy'
>
>
> 73
>
>
> Peter G3RZP

R L MEASURES, AG6K. 805-386-3734
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