[AMPS] a sticky issue.

[jeff millar]

Someone is certainly confused here.  The HF RF bypass cap will 
reduce 1.8 MHz ripple on the electrolytics.  The problem with
ripple currents in the electrolytics has to due with resistive heating,
The designer usually sizes the caps to meet a ripple current heating
specification and if that ripple increases due to plate voltage swing
leaking back through the plate choke, the PS filter caps will operate
at increased temperature and somewhat reduced life.

jeff

----- Original Message ----- 
From: "measures" <2@vc.net>
To: "AMPS" <amps@contesting.com>
Sent: Sunday, October 15, 2000 7:31 PM
Subject: Re: [AMPS] a sticky issue. 
> 
> >In my determination, the ripple in the supply at 1.8 MHz is about 
> >1/2 of a percent when actual impedances are considered. Hardly 
> >enough to worry about. 
> >
> Adrift in a sea of misunderstanding.  // RF voltage on electrolytic 
> filter caps is the main concern. 
> 
> >What major performance changes do you expect to see, if the 1/2 
> >percent ripple is reduced from .5% to say .08 %? 
> 
> The HV RF bypass cap Has Nothing to do with ripple, Tom. 
> 
> > Or is this a "feel 
> >better mod"? (Nothing wrong with that, as long as it doesn't hurt 
> >anything else)
> >
> ....  clueless  
> 
> end
> 
> -  Rich..., 805.386.3734, www.vcnet.com/measures.  
> end
> 
> 
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> 


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