Re: Ferrite Cores - Where's the Gap? (fwd)

[Steven Roys <sroys@xxxxxxxx>]

---------- Forwarded message ----------
Date: Tue, 6 Apr 2004 10:09:36 -0600
From: Gomez Addams <gomez@xxxxxxxxxxxx>
To: High Voltage list <hvlist@xxxxxxxxxx>
Subject: Re: Ferrite Cores - Where's the Gap? (fwd)

On Apr 5, 2004, at 10:51 PM, High Voltage list wrote:

> Date: Mon, 5 Apr 2004 18:20:34 +1200
> From: Malcolm Watts <m.j.watts@xxxxxxxxxxxx>
[snip]
>     A flyback supply will always have a gapped core since energy
> transfer is accomplished by storing energy in the core (an undesirable
> property in pushpull and bridge topologies) and the core material
> itself will store very little energy without going into saturation.
> Despite the undesirable side-effects of gapping in other types of
> supply, transformers used in forward converters, bridge converters
> etc. will often also have some core gapping to obviate flux
> staircasing.

So, to paraphrase the old Wendy's commercials... "where's the gap?"