>>Does anyone know where I can find information on designing a single
>>phase variable frequency drive? I will be using a PIC so this isn't
>>entirely off topic. I would be driving a 1/3 hp permanent split
>>capacitor motor. Thanks!


>Unless your speed range is very limited, you'll actually be
>designing a single-phase-input, two phase output drive and dumping the
>capacitor. The passive network only has the appropriate phase
>shift at a single frequency.

I know companies make these controllers and they don't say anything about having to dump the
capacitor to use them. See for example: http://www.anaconsystems.com/text/singleov.html .

Jim

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