Today's Message Index:
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1. 06:07 AM - Spark suppression diode on starter MOTOR (tomcostanza)
2. 10:49 AM - Re: Spark suppression diode on starter MOTOR (user9253)
Message 1
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| Subject: | Spark suppression diode on starter MOTOR |
It's common (or maybe not so common) knowledge that spark suppression diodes are
a good idea on relays and contactor coils. But I've found precious little discussion
about putting one on the starter MOTOR (B lead). The motor windings
have the same issue of collapsing magnetic fields. Is the battery supposed to
absorb that energy? This is more of an academic question than a practical one,
since airplanes aren't falling out of the sky without them.
Anyone?
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Clear Skies,
Tom Costanza
-- in year 17 of a 3 year project
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=506468#506468
Message 2
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| Subject: | Re: Spark suppression diode on starter MOTOR |
Batteries don't absorb the energy from inductive voltage spikes.
The controlling switch contacts do. As the switch contacts open,
an arc jumps across the opening contacts. The energy is dissipated as heat.
Starter motors have counter EMF that might limit inductive voltage spikes.
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Joe Gores
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=506470#506470
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