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Posted by john bero on December 6, 2009 at 9:22pm

Has anyone information on how to convert these brushless motors to use as an alternator for onboard power with gas engines for extended flight?

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Mike Bakula December 11, 2009 at 1:43pm

The other issue with using PM motors as alternators is that the voltage varies with the shaft RPM and load. These days that's easy to solve with a wide-input DC regulator. Here's the spec sheet on a TI unit we've used in the lab:

http://focus.ti.com/lit/ds/symlink/ptn78020w.pdf

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