[Amps] Astron RS20A primary resistance

[Dan Hearn]

Gary, I have a VS20M Astron here which I suspect has the same xfmr in it. I
measure the primary R as 1 ohm with my Tripplet 60NA. That seems awfully low
so I measured it with my Fluke 77 and get 1.1 ohms. I measured between the
blades on the line cord with the power switch on. Still seems pretty low but
I believe my measurements. 73, Dan, N5AR

-----Original Message-----
From: amps-bounces at contesting.com [mailto:amps-bounces at contesting.com]On
Behalf Of Gary Schafer
Sent: Sunday, May 07, 2006 7:59 PM
To: amps at contesting.com
Subject: [Amps] Astron RS20A primary resistance


I need to know what the primary resistance is of the Astron RS20A
transformer. I would like to know the resistance of a 220 volt transformer
and a 120 volt transformer.

Maybe someone has a 220 volt RS20A that could measure the resistance across
the power plug, that will do it.



I have a power supply here that is supposed to be a 120 volt unit but it
looks like it has a 220 volt transformer as I only get around ½ the voltage
out on 120. This transformer measures around 6 ohms primary resistance.



Thanks for any help.



73

Gary  K4FMX

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