>>>? I do not use FETs in the screen shunt-regulator. I use FETs in the
>>>screen series-regulator. In the latter, I use Source (neg. feedback)
>>>resistor(s) as current-equalizers and to suppress osc. around 100MHz.
>>>- cheers
>>>
>>>
>>>
>>>Rich...
>>For belt and braces against oscillation, a few ohms right by the gate
>>(just like a grid stopper) will rarely cause any harm.
>>
>? I use one. See R13 in Figure 8 (screen reg.) on my Web site. .
>
>- cheers, Steve
I'd spotted it in your circuit, I just thought I'd add my comment for
general consumption. Instability in power FETs is often ignored
elsewhere.
Steve
>
>
>Rich...
>
>R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures
>
>
>--
>FAQ on WWW: http://www.contesting.com/ampfaq.html
>Submissions: amps@contesting.com
>Administrative requests: amps-REQUEST@contesting.com
>Problems: owner-amps@contesting.com
>Search: http://www.contesting.com/km9p/search.htm
>
--
FAQ on WWW: http://www.contesting.com/ampfaq.html
Submissions: amps@contesting.com
Administrative requests: amps-REQUEST@contesting.com
Problems: owner-amps@contesting.com
Search: http://www.contesting.com/km9p/search.htm
|