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Old 23-08-2017, 09:13   #1
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Question On Diode placement

Good Morning,

If anyone can tell me why the keyed contactor requires a diode between the neg and pos terminals please let me know. It seem odd to me. I would mention this motor has regenerative breaking if that might be something to do with it.

Thanks folks
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Old 23-08-2017, 09:19   #2
Guy
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Re: Question On Diode placement

It's standard pratice. As the field in the relay collapses it can cause a spike which could cause the relay to close again. The diode prevents that.
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Old 23-08-2017, 09:24   #3
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Re: Question On Diode placement

Make sense now was driving me crazy trying to reason it out.

Thanks
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