jessejenks(at)hotmail.com
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 Posted: Fri Feb 05, 2010 9:34 am Post subject: Starter engaged light, was Starter and contactor wiring |
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Interesting. Thanks.
[quote] From: aerobubba(at)earthlink.net
To: aeroelectric-list(at)matronics.com
Subject: RE: Starter engaged light C was Starter and contactor wiring
Date: Fri C 5 Feb 2010 11:04:13 -0500
--> AeroElectric-List message posted by: "glen matejcek" <aerobubba(at)earthlink.net>
Hi All-
It's been a while since I went down my decision tree on this topic C and I
might not recall all the details perfectly C but it seems to me that there
are a couple details of 'starter engaged' annunciation that might have been
overlooked. First C it seems to me that the objective is to know whether
there is power on the starter or not C so tapping the fat wire between the
solenoid and the motor would be in order. This would then annunciate that
there was power to the starter motor itself. It also has the advantage of
monitoring the spin down of the motor. Should the pinion hang and the
motor remain engaged after the solenoid opens C the back emf can keep the
engaged light illuminated. It might be especially zippy if one were to use
a bi-directional led for the indicator C such that one could perhaps have
amber indicate normal engagement and red to indicate run-on. Including a
zener diode could clip the spin-down indication during normal operation
while still allowing the run-on indication to function C should that become
desirable.
glen matejcek
aerobubba(at)earthlink.net
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