R: [AMPS] QRO TORROID (WAS MORE USEFUL SUPPLY.

[i4jmy@iol.it (Maurizio Panicara)]

----- Original Message -----
From: Phil Clements <philk5pc@tyler.net>
To: Jim Zellmer <zellmer@raccoon.com>; <amps@contesting.com>
Sent: Monday, January 24, 2000 4:13 AM
Subject: Re: [AMPS] QRO TORROID (WAS MORE USEFUL SUPPLY.


>
> That is a 4:1  un un transformer to step 200 ohms down to 50 ohms.
> The harmonic attenuation is the same as a Pi network, but this method
> is much cheaper to produce than either a Pi or a Pi L tank circuit.
>
>
> (((73)))
> Phil, K5PC

May be on a matched and purely resistive load.
Iron core baluns, unless very largely oversized, do not perform well in case
of mismatches.

73,
Mauri I4JMY









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