[RFI] Power Lines

[Jim P]

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 at ewing.homedns.org>
To: <rfi at 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
caps...
>
> 73 Martin AA6E
>