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#21
January 19th 04, 06:10 AM
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"GeorgeB" wrote in message ... On Sun, 18 Jan 2004 19:20:48 -0500, "Ron Natalie" wrote: "Jim Weir" wrote in message news  Jeez...that's something I've never considered. You are RIGHT, internal to that alternator there IS 3-phase AC that is regulated and rectified to produce the DC... And now with three small transformers and a little surgery on the alternator, we could have 3-phase 115VAC to run those military gyros...I wonder...yeah, I know the frequency is a function of engine RPM...but still... \ You think that AC coming out of those inverters is all that stable? It tends to wander with the input voltage. Of course the real problem is that if the alternator crumps, the battery will not put out three phase. The voltage is pretty stable I was referring to the freqeuncy (in response to Jim's comment about the engine RPM's). You can actually here the whine of the inverter change pitch with the change of input voltage. 
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