[AMPS] Screen regulator circuit needed

[Rich Measures]

>
>Message text written by Rich Measures
>
>>However, one need not use the same obviously-flaky zeners that GW4FRX used
>. <
>
>For the record, the Zeners used to derive the comparison data illustrated
>on Ian's web site were nine 20W Philips/Mullard BZY93C39 purchased
>specifically for the tests. These were chosen to give a nominal 350V for
>comparison with the stabilised supply being developed at the time. It's not
>clear why such components should be "obviously flaky", 

Was not the IMD degraded by the shunt zener regulator?

>....especially since
>ISTR that this particular arrangement was the least worst of several Zener
>combinations tested around the same time.    
>
What was the measured fluctuation in screen potential from zero signal to 
max. signal with the zener shunt regulator?
-  thanks

-  cheers, John


Rich...

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


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