[AMPS] choice

[Rich Measures]

>
>
>> >The Henry amplifiers using 3-500 tubes are quite mature and stable,
>>
>> €  To the best of my knowledge, the World Record for grid-fil. shorting
>> brand-new 3-500Zs in under one day is currently shared by two 3K-A Henry
>> Radio amplifiers.  Both amplifiers reportedly shorted four 3-500Zs -
>> accompanied by stentorian big-bangs. .  . I attribute this feat to:
>> 1.   no peak fault current limiting resistance [glitch resistor] in
>> series with the high voltage positive lead.
>
>I didn't know you were the "Guinness book" keeper of these things in
>amplifiers.
>Good to know........
>
>My guess is that the amplifier lived through this disaster.
>Defective tubes caused this problem, NOT the amplifier!
>
€  Four defective 3-500Z tubes with grid-fil. shorts from Eimac seems 
doubtful.  If the tubes came with grid/fil shorts, where did the big-bang 
and fireworks come from? 
-  -   Always blame the other guy.   
 (see photo of grid-fil. short on page 15 of Sept., 1990 *QST*).  



Rich...

R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures  


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