[Amps] GS35b Bias

[MIKE DURKIN]

thats right ... my amp does not have a PNP, only NPN trans good to 1200v at 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 at tampabay.rr.com
> To: patriot121 at 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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