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Re: Alternators

To: tigerpb@ids.net
Subject: Re: Alternators
From: Jay Laifman <jlaifman@pircher.com>
Date: Wed, 26 Mar 1997 9:29:00 -0800
>> The only thing objectionable is that the "self priming"
>>action of the alternator doesn't come on immediately
>>(due to a resistor value being too high). One slight
>>rev-up and it comes alive, ready to serve from then on.

***** NOTES from Jay Laifman (JLAIFMAN @ PNM) at 3/26/97 9:24a
I had the same problem and solved it after I got a copy of the wiring 
diagram for the car from which I got the alternator.  In my case, it was 
because I did not realize that the dash light played an integral part in 
the "priming".  When you turn on the ignition, power flows through the 
light into the coils in the alternator so that they are primed 
immediately - the power gets to ground through the other side of the 
coils (there is no other ground as part of the light circuit).  Once the 
alternator starts pumping out the coils, the power goes up to the light 
and cancels out the power coming from the other wire and turns off the 
light.  If the light is not wired properly for this to work, the coils 
will only "self prime" as you suggest.

Jay Laifman


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