Re: alternator circuit question

From: Jim Thompson (thegreatone_at_example.com)
Date: 11/19/04 

Date: Thu, 18 Nov 2004 17:28:39 -0700

On Fri, 19 Nov 2004 00:11:51 GMT, "Jon G." <jon8338@peoplepc.com>
wrote:

>I have a 91 Plymouth Acclaim, and the alternator doesn't charge
>the battery. I took the alternator out and had it tested, and
>there's nothing wrong with it. I put a new battery in it, but
>it still won't charge. I checked the fuseable link from the
>alternator to the battery, and there is continuity. Therefore,
>it must be the computer.
>
>there are 4 connections on the alternator
>
>L1: direct to battery, positive
>L2: direct to battery, negative
>c1: small wire, logic, to computer, activates diode
>c2: small wire, logic, to computer, also battery ground.
>
>I want to activate the alternator continuously and put on an
>external voltage regulator.
>
>What must the voltage (and current), to the logic inputs c1 & c2
>be to do so?
>
>I have in mind to run a potentiometer between L1 and c1, and
>adjust it until the alternator kicks on.
>
>The schematic shows that c1 goes to the coil of a transformer in
>the alternator, which then goes to one of the diodes (an SCR?)

Check your car wiring diagram and locate the regulator.

                                        ...Jim Thompson 

-- 
|  James E.Thompson, P.E.                           |    mens     |
|  Analog Innovations, Inc.                         |     et      |
|  Analog/Mixed-Signal ASIC's and Discrete Systems  |    manus    |
|  Phoenix, Arizona            Voice:(480)460-2350  |             |
|  E-mail Address at Website     Fax:(480)460-2142  |  Brass Rat  |
|       http://www.analog-innovations.com           |    1962     |
             
I love to cook with wine.      Sometimes I even put it in the food.

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