Re[3]: More transformer data.

Peter, I believe you misunderstood. At the risk of oversimplification, all
games manufactured for U.S. sale which require isolation transformers are
designed, built, and sold with them installed. The only ones which did not
are the modern ones which have monitors that do not require isolation
transformers.

We have regulatory agencies like most other countries, that dictate things
be done this way. We're not "that stupid" or "fucked-up," you just
misunderstood the meaning behind someone's post and jumped to a pretty
ridiculous and unfounded conclusion.

Richard

At 10:52 PM 11/30/2000 +0300, you wrote:

>-----Original Message-----
>From: John Robertson <jrr@flippers.com>
>To: vectorlist@synthcom.com, vectorlist@synthcom.com
>Date: Wed, 29 Nov 2000 09:01:45 +1100
>Subject: Re[2]: VECTOR: More transformer data.
>
> > If you have a transformer that is listed as (for example) 36-0-36, then
> you
> > HAVE an isolation transformer. Unless the transformer specifically
> > identifies itself as an "Auto-Transformer" then it is an isolation style.
> >
> > Look at the wiring diagram for the transformer in question. As long as the
> > output windings are not connected to the input it is isolation (most
> > transformers are isolation by the way). You can also do a resistance check
> > if you don't have the wiring for the transformer. If there is infinite
> > resistance between the line in and the output windings then this is an
> > isolated transformer. If the resistance is around 20 ohms, then you
> have an
> > auto-transformer.
> >
> > The reason the discussion of isolation transformers comes up is that
> > standard raster (sorry) video games' monitors are NOT line-isolated,
> having
> > no transformer in the primary. They assume that the application provides
> > isolated power to the monitor.
> >
> > Clear as mud??
> >
> > John :-#)#
> >
>That sounds pretty fucked-up!
>I am in europe, and we ALLWAYS use isolation transformers on the monitors.
>If we didn't then we could get prosecuted for endangering public safety.
>
>I was not aware that in america people where stupid enough to just connect
>monitors to the power-line.
>I suppose that is why american manuals make so much of a point about
>correct grounding of the machine!
>
>L8r.
>

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Received on Thu Nov 30 16:02:35 2000