Whoa...flux density comes from Ampere-Turns, not Volt turns.
But, overall an excellent discussion.
jeff, wa1hco
----- Original Message -----
From: "Tom Rauch" <w8ji@contesting.com>
To: "Ian White, G3SEK" <G3SEK@ifwtech.co.uk>; <amps@contesting.com>
Sent: Monday, May 06, 2002 2:12 PM
Subject: Re: [Amps] Rectifier diode strings
> > Unless I misunderstood Tom's point about mains transformers saturating
> > at 1.3-1.4 times normal primary voltage, surely that would only apply
> > at full load? The main risk to the rectifiers is more likely to be
> > during RX periods, when the load is at a minimum but the DC voltage is
> > at a maximum. I don't believe the saturation argument would apply
> > then, would it?
>
> Yes, saturation applies. Remember what it is. The core can only
> obtain a certain flux density, and that flux density relates only to
> the volt-turn of the magnetizing winding. Flux density is the same at
> full load or no load, ignoring small differences caused by resistance
> in the primary and power mains.
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