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Re: [RFI] Power Lines

To: "Martin Ewing - AA6E" <aa6e@ewing.homedns.org>,<rfi@contesting.com>
Subject: Re: [RFI] Power Lines
From: "Jim P" <jvpoll@dallas.net>
Date: Sun, 23 Dec 2007 17:33:03 -0600
List-post: <mailto:rfi@contesting.com>
Now, imagine your 'power mains' are 400 Hz 115V
3 phase - those are the kinds of systems I've had
more experience with (off-line switchers powering
HV supplies for TWT and Magnetron-based pulse
'transceivers' back a few years) -

- your caps REALLY shrink in size (but the audibility
of the power supply magnetics really jumps too -
400 Hz vs 60 Hz!)

Jim P // WB5WPA //

----- Original Message -----
From: "Martin Ewing - AA6E" <aa6e@ewing.homedns.org>
To: <rfi@contesting.com>
Sent: Sunday, December 23, 2007 4:54 PM
Subject: Re: [RFI] Power Lines

> Check out the wikipedia article on this at
> http://en.wikipedia.org/wiki/Three-phase_electric_power . Lots of info
> and some interesting animations.
> You can build a neat DC power supply for your multi-kW station, if you
> have 3 phase power.  Low ripple, high power factor.  Saves on filter
> 73 Martin AA6E

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