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

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Subject: [AMPS] Blown TL922A... What to do?
From: W8JI@contesting.com (Tom Rauch)
Date: Mon, 11 Sep 2000 13:11:08 -0400
> 
> 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

That isn't true Rich. 

Removing the current limiting allows the operator to overdissipate 
the grid, and that is the single most common cause of failure in 
MOX cathode amplifiers.

A resistor is not even near as good as a fuse, and a fuse is 
actually too slow and unreliable to protect most control grids.

Removing fast electronic protection and using an unreliable and 
slow acting resistor as a "fuse" is a simple answer, but very bad 
advice.




73, Tom W8JI
w8ji@contesting.com

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