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

To: <amps@contesting.com>
Subject: [AMPS] Blown TL922A... What to do?
From: 2@vc.net (measures)
Date: Mon, 11 Sep 2000 10:58:28 -0700
>
>> 
>> 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.
>
A frangible resistor seems to protect 3-500Zs from shorting during 
big-bangs.  

>Removing fast electronic protection

A shorted transistor affords zero protection.  

> and using an unreliable and 
>slow acting resistor as a "fuse" is a simple answer, but very bad 
>advice.
>
A C/E shorted transistor provides better protection.?

end

-  Rich..., 805.386.3734, www.vcnet.com/measures.  
end


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