[ger21]

I've got 300w motors, so #1 sounds best to me.

What about something like a rutex, that just accepts power from a simple power supply?

[Pophamrt1]

Just a suggestion, so take it with a grain of salt, and I'm not sure if its even feasable per Rutex's current product offerings/development path. But, I'd rather see a joint development effort to assist Vlad/Tom in a sinusoidal or otherwise modified Rutex, if that is indeed necessary to correctly drive the current AC brushless servos such as the P5.

You're obviously skilled, willing, and interested in going to production with a product. Which is great. The only additional consideration is that Rutex has an established product platform with their current offerings, which adds stablity and the "warm fuzzies" to those like me who are interested in investing in a solid platform for retrofits to ease installation and tuning issues and that will be there in a few years with a replacement when a drive finally blows.

I deal with licensing intellectual property, trade secrets, etc., in the semiconductor industry as my profession, so am aware of the difficulties and would be willing to assist if interested.

Again, just a suggestion, and the undertaking of a sinusoidal drive is appreciated as I have 10 of the 1KW P5s--so whatever happens, my suggestion would be Rutex-style with sinusoidal amplification and headroom for at least 100V, 12amps cont., and about 40 amps peak, all for use with an independent unregulated power supply (basically enough to push the motors hard enough for retrofits to small VMCs with about 200-300ipm rapids).