Amps
[Top] [All Lists]

Re: [Amps] Astron RS20A primary resistance

To: "'Dan Hearn'" <dhearn@wwnw.net>, <amps@contesting.com>
Subject: Re: [Amps] Astron RS20A primary resistance
From: "Gary Schafer" <garyschafer@comcast.net>
Reply-to: garyschafer@comcast.net
Date: Mon, 8 May 2006 16:24:44 -0400
List-post: <mailto:amps@contesting.com>
Thanks Dan,

I have a VS35M also and it shows a resistance of around an ohm on my Fluke
77 meter so that sounds in the ball park. I wasn't sure if the transformer
in the 20 amp supply would be a lot higher than the 35 amp supply or not but
it sounds like it is about the same.

Now if I can find someone that has a 220 volt unit to make a comparison I
will be all set. It should be about twice that or around 2.2 ohms or so but
I read around 6 ohms on the one in question. 

By the way Astron does not (at least in the past) use dual primary
transformers. It is either 120 or 220.

Thanks
Gary  K4FMX

> -----Original Message-----
> From: amps-bounces@contesting.com [mailto:amps-bounces@contesting.com] On
> Behalf Of Dan Hearn
> Sent: Monday, May 08, 2006 2:53 PM
> To: garyschafer@comcast.net; amps@contesting.com
> Subject: Re: [Amps] Astron RS20A primary resistance
> 
> 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@contesting.com [mailto:amps-bounces@contesting.com]On
> Behalf Of Gary Schafer
> Sent: Sunday, May 07, 2006 7:59 PM
> To: amps@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
> 
> _______________________________________________
> Amps mailing list
> Amps@contesting.com
> http://lists.contesting.com/mailman/listinfo/amps
> 
> 
> --
> No virus found in this incoming message.
> Checked by AVG Free Edition.
> Version: 7.1.392 / Virus Database: 268.5.5/333 - Release Date: 5/5/2006
> 
> 
> _______________________________________________
> Amps mailing list
> Amps@contesting.com
> http://lists.contesting.com/mailman/listinfo/amps


_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps

<Prev in Thread] Current Thread [Next in Thread>