Re: supplying power to a color vector monitor

Neil Bradley wrote:
>
> > The monitor in Space Duel is a Wells-Gardner 19K6102. Try taking a
> > look at http://www.arcademonitors.com for the specific power
> > requirements, but I believe its 50 VAC CT. This monitor needs an
> > isolation transformer! Do not hook it up without isolating it. You
>
> Would this transformer work?
>
> http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2117356691

No, but thanks for mentioning it. That is an isolation transformer for
powering Japanese (100 volt standard) equipment. Great thing for
Nintendo machines where the monitor and power supply need 100 volts.

I did some snooping around and Allied Electronics has some that would
work:
        Hammond 266M48 (Allied 836-2070) $35.89, 144 VA rating
        Hammond 266N48 (Allied 836-2075) $47.23, 192 VA rating
        Stancor P-8619 (Allied 928-4619) $38.80, 192 VA rating
        Thordarson 23V392 (Allied 704-5070) $59.62, 192 VA rating

These all have TWO 24 volt windings, the key here is to connect them in
series to create a 48 volt winding with a center tap. I know, I know,
the monitor calls for 50 volts, but 1) 48 is within specs and 2) these
have 117 volt primaries so by the time you plug them into a 125 volt or
so wall socket you're going to be getting REAL close to 50 volts.

There's nothing to say you can't use TWO 24 volt, 3 amp transformers, if
you have any. I thought Radio Shack might have such a beast, but I
can't find the catalog AND their web site doesn't tell you secondary
voltages! Friggin unbelievable!!

Mouser and Digikey don't seem to have anything stiff enough and Newarks
web site just doesn't make searching transformers very easy.

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Received on Wed Jul 3 00:42:56 2002