[AMRadio] Step Start


Brett gazdzinski brett.gazdzinski at verizonbusiness.com
Wed Dec 13 08:20:02 EST 2006


2000 volt center tap is going to give you about 850
to 900 volts output max.

Brett
 

> -----Original Message-----
> From: amradio-bounces at mailman.qth.net 
> [mailto:amradio-bounces at mailman.qth.net] On Behalf Of Jack Schmidling
> Sent: Tuesday, December 12, 2006 11:16 PM
> To: Discussion of AM Radio in the Amateur Service
> Subject: Re: [AMRadio] Step Start
> 
> D. Chester wrote:
> 
> > I'm not sure how much plate voltage and current you plan to 
> run from the 
> > power supply, but it has been my experience with loads on 
> the order of 
> > 2000-2500 volts at 600-700 mills or so, you don't have to 
> worry about 
> > the need for step-start with choke input filter using a 
> swinging choke, 
> > until you go beyond 25 mfd of filter capacitance.
> 
> Good.  I have eliminated it.  Not sure what the voltage will 
> be but the 
> xformer I ordered is 2000vct @ 500 ma
> 
>  >The p-p 845 audio driver stage stays on all the time
> > and pulls about 150 mills, acting as extra bleeder, holding 
> the voltage 
> > steady even for cw operation.
> 
> I presume I can eliminate that drain if I drive with the 
> Ranger and keep 
> it all under 500 ma?
> 
> Or at least putz around with screen modulation.
> 
> js
> 
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