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Re: [Amps] FW: Power factor correction on tube amps

To: amps <amps@contesting.com>
Subject: Re: [Amps] FW: Power factor correction on tube amps
From: KA4INM <ka4inm@gmail.com>
Reply-to: ka4inm@gmail.com
Date: Thu, 07 Mar 2013 18:49:27 -0500
List-post: <amps@contesting.com">mailto:amps@contesting.com>
On 03/07/13 18:07, Matt KM5VI wrote:

Help me out here guys...

I thought that conventional power supplies (transformer-bridge-filter) were
relatively clean on reflected harmonics?

No, the transformer is all inductive and the diodes conduct for most of the sine wave, but not all, at that transition the current changes abruptly causing distortion. (The capacitors are polar and not able to compensate for the inductance in the transformer.)
--
  Ron  KA4INM - Youvan's corollary:
                Every action results in unwanted side effects.
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