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Re: Voltage regulator problem found with pictures

To: Dave Chu <dave@ece.concordia.ca>
Subject: Re: Voltage regulator problem found with pictures
From: Douglas Braun <doug@dougbraun.com>
Date: Wed, 09 Jul 2003 20:56:01 -0400
Great detective work!   How did you remove the compound?

I bet the original 1970's version of the regulator used a different
circuit board :-)

If you get a chance to trace out the circuit and the resistor, etc. values,
that would be great.

Doug Braun
'72 Spit


At 07:24 PM 7/9/2003 -0400, you wrote:
>I had taken my alternator apart and tested some of its electronic components.
>It was only putting out around 10.5V and was not charging my battery.  The
>diode pack (rectifier) is working and the only other component left is the 
>voltage regulator.  I wouldn't resist and removed the potting compound.  For
>those who are interested here is a picture of its component.  There are only
>4 active components on that circuit.  The 2N6388, a darlington transistor, a
>surface mount transistor, diode and 6V zener diode. 
>
>  http://www.ece.concordia.ca/~dave/carpics/regulator.jpg

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