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RE: Using A Computer UPS as a Battery Drive for TT Motor

Posted by AbeCollins (A) on October 21, 2009 at 07:27:28

In Reply to: Using A Computer UPS as a Battery Drive for TT Motor posted by Mister Pig on October 21, 2009 at 06:11:09:

I would be more inclined to go with something like an older and inefficient PS Audio power regenerator like the P300.

If you run a UPS it's doing basically the same thing but taking the DC voltage and converting it to AC. And the equipment that a UPS typically powers is often less critical of AC distortion that your TT motor.

If you DO try a UPS you MUST make sure it is the type that produces a pure sine wave and not a "modified" (stair stepped) approximation. They cost more. If I had to guess I would go with 500VA or larger but that's a WAG not knowing the power draw from your motor OR for how long you expect to run it off the UPS.

But even a pure sine wave UPS will likely have more AC distortion on it vs the P300 I mentioned above.

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