Don
And The Master 23rd edition Thordarson section says:
T-21P83
1560-0-1560
1250-0-1250
@ 200 ma DC
Pri 117 V 50/60 cps (I know, I know)
Secondary voltage changed by primary tap.
Static shield.
Size H 6" W 4 3/4" D 8 1/2"
Mtgs cntrs 7 5/8" x 2 3/4"
John, WA4EPI
> Date: Wed, 4 May 2005 09:13:40 -0500
> From: "Don Lemley" <w8hrq@comcast.net>
> Subject: [Amps] Another Plate Transformer Question
> To: <amps@contesting.com>
> Message-ID: <00bc01c550b3$79291230$6bfea8c0@HamBone>
> Content-Type: text/plain; charset="us-ascii"
>
> I just ran on to a HB power supply that looks to have been built for a
> tetrode amp of some sort, with hollow state electronic regulated 350V
> screen supply, etc.
> However, I don't know the actual ratings on the plate xfrmr, and the
> power supply needs several electrolytics replaced, etc before I can
> bring it up.
> My question is, does anyone know the specs on a Thordarson T-21P83 plate
> xfrmr? I have checked the catalogs that I have been able to find,
> including the 1938/39 and 1942, as well as the newer Catalog #76, but I
> don't find any reference to this puppy. My guess is that this thing was
> designed for a half gallon amp, but the screen supply is much too large
> for that, and the plate transformer also looks to be a little large for
> a half kw, so I could use some help if someone has a catalog that lists
> this thing.
>
> Many thanks in advance,
>
> Don
>
> Don Lemley - W8HRQ
> w8hrq@comcast.net
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