Topband: Detuning Relay Flyback Diode

Mike Waters mikewate at
Sun Dec 24 10:52:13 EST 2017

What's wrong with using an MOV across the coil, with a .1 uf capacitor in
parallel with it? That's what I do. The relay opens almost instantly when
the coil is de-energized.

The value of the MOV should be a few volts above the coil voltage. For
example, an 18 volt MOV for a 12 volt coil.

73, Mike

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