Bruce Senn writes:

> Indeed, our 918 uses a 700/96 console connected to the 220 power from
>  the UPS.  However, I do have modems, which I would like to have on UPS
>  power.  MPE/iX doesn't yet have a way to tell us how long the power will
>  last, so I'd like to be able to dial in and shut it down before the
>  dreaded "2 minutes left" message.
>
>  I killed two modem power supplies believing I had 110 from all the
>  cabinet outlets.
>
>  Can anyone give me a supplier, partnumber, approximate price of a
>  step down transformer? The only ones I have found are for using your
>  electric razor in Europe and they don't seem tough enough for this
>  "mission critical" application.

I have used Triad-Utrad transformers in all of our designs for 30 years now.
I've been consistently very pleased with the quality of the transformers they
manufacture.

The kind of stepdown transformer you need is technically called an isolation
transformer. Triad has at least two models that would be appropriate. They
are: N-67A (for a maximum of 150W draw) and N-66A (for 250W draw). These
transformers are probably going to be in the $60-80 price range each. They
have a 230/115V primary winding and a 115V secondary.

You can purchase items such as these transformers from any major electronics
parts supplier. One of these is Arrow Electronics. A list of Arrow's phone
numbers appears  at:

     http://www.actel.com/sales/address/arrow.html

(The Actel company has nothing to do with Arrow. Arrow is a distributor for
their products. This is simply the best listing of all of Arrow's Locations
that I could find on the web).

Arrow itself has a nearest-distributor locator web page at:

     http://www.arrowschweber.com/cgi-bin/ssol.startup?f=n

Wirt Atmar