Thread: Test a Relay
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aigel aigel is online now
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Join Date: Mar 2003
Location: L.A.-> SF Bay Area
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You are over-analyzing this. There is no diode in there as mreid already told us.

For bench testing you can hook up 85 and 86 to 12 V either way and test resistance across 30 and 87.

The magnetic field created in the relay to pull the switch closed can be either polarity, as it is pulling in a ferromagnetic switch that is "equal opportunity" - attracted to either polarity magnetic field.

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Old 10-21-2012, 12:07 AM
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