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[AMPS] Choke input PS question

To: <amps@contesting.com>
Subject: [AMPS] Choke input PS question
From: 2@vc.net (2)
Date: Mon, 22 Oct 2001 08:35:29 -0700
>
>Interesting,
>
>And here I thought that the primary reason many modern
>amplifiers lacked heavy chokes was to save weight,
>space, and cost. :-)  Something like this would have
>never occured to me.  It's surely not mentioned in any
>of the (albeit meager supply) literature I have on
>hand.  
>
>What would be the symptom(s) of this problem?  What
>would it look like on a scope?  Ringing??  
>
Not quite.  When an old timer (W6SDM) told me about the unresonant choke 
problem, he explained that the transient regulation problem can't be seen 
on a garden-variety voltmeter because the needle inertia is too high.  
Sure enough, I saw no problem on the voltmeter.  The voltage regulation 
looked good.  However, with an oscilloscope, when I connected the load, 
the output V briefly spiked downward around 50%.  When I disconnected the 
load, the output spiked upward about 50%.  I was impressed.  

>...

-  R. L. Measures, 805.386.3734,AG6K, www.vcnet.com/measures.  
end


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