Mailing List flyrotary@lancaironline.net Message #3434
From: Mark Steitle <msteitle@mail.utexas.edu>
Sender: Marvin Kaye <marv@lancaironline.net>
Subject: Re: [FlyRotary] Re: alternator choice?
Date: Wed, 01 Oct 2003 20:01:12 -0400
To: <flyrotary>
I'm not an expert in electronics.  I was following the advice of Bob Nuckols on the Aero-electric connection.  There are failure modes with internal regulators such as a "run-away" that can't be stopped by shutting off the field current.  This possibility necessitates using over-voltage protection at a very minimum.  The problem comes with how to hook OVP up to an internally regulated alternator.  There's a schematic on the Aero-electric Connection at http://www.aeroelectric.com/articles/bleadov.pdf that shows how to do that.  Its not that hard to bypass the internal regulator and go with a Ford solid-state regulator.  They're reliable and very affordable.  Add OVP and you're all set.

  At 10:13 AM 10/1/2003 -0700, you wrote:
What was the reason for going external regulator? By going to a dual
alternator can't I just switch one off if it goes bonkers (or have an
overvoltage relay do that for me)?

re

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