thats right ... my amp does not have a PNP, only NPN trans good to 1200v@10A
.... i want to replace the minum of parts ...
You dont see an improvement ?? I was leaning towards a variable Bias with a
LM317t and a NPN pass transistor .. simply because its what i have ... and im
trying not to buy anything.
Mike
KC7NOA
> Date: Mon, 8 Mar 2010 23:47:25 +0000
> From: ka4inm@tampabay.rr.com
> To: patriot121@msn.com
> Subject: Re: [Amps] GS35b Bias
>
> Hi MIKE DURKIN:
>
> > ok, I made a quick draw of what im wanting to do .. basically replace
> > the Zener in the all black drawing .. I forgot to add a Blocking diode
> > in series ok the 1k resistor that's tied to the NPN transistor ..
>
> I see no PNP, but if the circuit on the left is the original it is an
> "amplified Zener."
> The LM317 will generate much more noise and not be any improvement that I can
> see.
> --
> Ron KA4INM - I'm proud to be Chuck's pop!
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