> ----------
> 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; amps@contesting.com
> 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.
>
> -- Dave
>
> 73, Tom W8JI
> w8ji.tom@MCIONE.com
>
>
>
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