On Sat, 17 May 97 20:21:24 -0700, Rich Measures <measures@vc.net>
wrote:
<snip>
>The reason why Collins Radio Co. did not neutralize the 30L-1 is because
>there is no way to neutralize a single ended g-g amplifier. [see *Care
>and Feeding of Power Grid Tubes*]. Mr. Rauch has apparently succeeded
>in convincing himself that he can do that which is not possible.
>Rich---
>
>R. L. Measures, 805-386-3734, AG6K
<><><><><><><><><><><><><><><><><><><><><><><><><><><><>
Are you sure there's no way to neutralize a single ended GG amp? My
AL-1200 has what the manual calls a neutralizing circuit. It's a
small toroid transformer which feeds some of the anode energy back to
the cathode with 180 degree phase reversal. There is a neutralizing
"tab" (capacitor) adjacent to the anode, and the manual says "In the
event the tab becomes displaced, proper neutralization will occur when
the maximum output power and grid current and minimum plate current
appear concurrently."
If that isn't neutralizing, what is it?
73, Bill W7TI
--
FAQ on WWW: http://www.contesting.com/ampfaq.html
Submissions: amps@contesting.com
Administrative requests: amps-REQUEST@contesting.com
Problems: owner-amps@contesting.com
|