> From: Tom Rauch[SMTP:10eesfams2mi@mail20.MCIONE.com]
> Reply To: w8ji.tom@MCIONE.com
> Sent: Wednesday, June 10, 1998 5:10 AM
> To: Scott Townley; firstname.lastname@example.org
> Subject: Re: [AMPS] pi vs. t tuned input
> Should I "roll my own" on
> > powdered iron toroids?
> Yes, it is virtually impossible to saturate powdered iron or
> ferrites because they overheat long before saturation occurs. The
> exception is in pulse duty, where the duty cycle is so low
> saturation can occur without melting down the core.
Or in dc applications...Actually, some powdered iron and
especially ferrite cores are pretty easy to saturate under certain
conditions, such as when used with large dc currents. For instance when
used in power supply filter chokes, you can easily saturate a ferrite or
powdered iron (high permeability) core before it overheats.
> 73, Tom W8JI
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