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Re: More three phase fun...

Original poster: "Brian" <ka1bbg@xxxxxxxxxxxxx>

Hi, my 12 years rebuilding alternators in past life says, 120 volts leg to
leg. and the frequency is up to around 400 hz if i remember. special stator
windings will get more voltage, Ham radio guy used to wind them for 300
volts ac leg to leg for transmitter power. be glad to answer questions off
----- Original Message -----
From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Wednesday, January 19, 2005 8:46 PM
Subject: RE: More three phase fun...

> Original poster: Jim Lux <jimlux@xxxxxxxxxxxxx> > > At 07:36 AM 1/19/2005, you wrote: > >Original poster: "Steve Conner" <steve.conner@xxxxxxxxxxx> > > > > >I certainly have > > >just playing with my AC car alternator over the years. > > > >Hi Harvey, > > > >What's the maximum voltage you can get out of a car alternator with the > >diodes removed? Can it be pushed as far as 200V (between phases which would > >be 120V phase to neutral) > > Kind of complex question to answer. > > 1) What's the insulation breakdown on the windings? I'd suspect no problem > there. > 2) The max voltage (no load) is determined by the field strength and the > rotational speed. You'll have to calculate > 3) Field strength is determined by field current, which in turn is limited > by thermal dissipation (you can only put so much field current in before it > fries) > > I have heard of people getting 120V out of car alternators (you used to be > able to get kits to do this), but I don't know if that was 120V phase to > phase or 120V phase to neutral. > > > >