> At 10:25 AM 8/30/2003 -0400, paul x wrote:
>
> >100 W should be ok.
> >where to get some design info?
> >
> >I think about using one 100W car audio amplier and a 100 W
> >110-5 V transfermer.
> >
> >any suggestion?
>
> It's been done, but mostly back when inverters were expensive.
> Today, a 100W inverter is <$50.
>
> You'd need a sine wave source of fairly accurate frequency, and a
> way to control the amp gain to set output voltage, and keep it
> constant under load changes.

        Very few inverters, at least the kind you'd find in a hardware store,
generate sine waves, the usually generate some sort of "step wave" that has
the same RMS as a "normal" sine wave, and that "kind of" looks like a sine
when feeding "typical" loads.

> Seems hardly worth the trouble.

        Agreed. TTYL

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