Garey Barrell
Tue, 29 Apr 2008 14:20:23 -0700
Garey Barrell <[EMAIL PROTECTED]> made an utterance to the drakelist gang ---------------------------------------------------------------------- Ron -That's a NEW one! :-) How long did the relay have to be energized to generate enough heat?
Garey [EMAIL PROTECTED] wrote:
I saw once where the relay iron core was expanding do to the heat the coil generated around it, which to this point is normal. But in this case as the core expanded it shorted against a bare coil winding. The core itself being at ground potential, when shorted against the coil winding provided the ground path to key the relay. Once the relay was unkeyed by removing power, it cooled, and worked again as normal until it heated up again. So don't put aside the possibility of a heat related problem in the relay itself. Ron / WB4HFN
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