To: | <amps@contesting.com> |
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Subject: | [AMPS] Blown TL922A... What to do? |
From: | 2@vc.net (measures) |
Date: | Mon, 11 Sep 2000 07:49:08 -0700 |
> >measures wrote: >>The grid protection circuits I am talking about are those that provide no >>protection because the transistor that interrupts has too low a current >>rating and it shorts during a glitch -- thereby affording no protection. >> >Failure of that transistor to survive a glitch/arc/parastic/flash- >over/whatever is a simple DC design fault that can be cured by a 10K >resistor. > A 10k-ohm resistor can prevent C-E shorts due to excessive collector current? >I don't think that's a good reason to remove grid current protection for >normal operation. Replacing a shorted transistor with a fuse-R is hardly removing protection. Shorted transistors afford no protection because they can not turn off. > cheers, Ian - Rich..., 805.386.3734, www.vcnet.com/measures. end -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submissions: amps@contesting.com Administrative requests: amps-REQUEST@contesting.com Problems: owner-amps@contesting.com |
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