Amps
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[AMPS] Grid protection

To: <amps@contesting.com>
Subject: [AMPS] Grid protection
From: 2@vc.net (measures)
Date: Tue, 12 Sep 2000 11:14:49 -0700
>
>Subject:               Re: [AMPS] Blown TL922A... What to do?
>Date sent:             Mon, 11 Sep 2000 16:40:37 -0700
>From:                  measures <2@vc.net>
>To:                    "AMPS" <amps@contesting.com>
>
>
>Ian asked:
>> >I don't understand that circuit idea - who uses it? 
>
>
>Rich relied: 
>> I do not know.  One of my customers told me that a transistor shorted in
>> the grid protect circuit during a glitch. 
>
>From this one incident of a single "customer" reporting a transistor 
>shorted in an amplifier Rich doesn't know about, Rich recommends 
>removing electronic grid overload protection in all amplifiers.
>
>Amazing!

I recommended removing the CE shorted transistor and replacing it with a 
fuse resistor.   Shorted transistors can not limit current.  

end 

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


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