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Thread: Orienter w electromagnet ViBRATOR
face BY : Russell McMahon email (remove spam text)

> The solenoid is supposed to 'let go' as fast as possible when
> power is switched off. I wonder what effect the anti-transient diode
> in parallell with the coil has on this... On a motor it would work
> as a breake, but what will it do to the solenoid ???

Slow the release time.

Solenoid current will circulate while decaying exponentially.
Initial energy loss will be diode loss plus resistive losses - 0.6I + I^2R.
You can work out time for energy to dissipate but it will be easier to just
try it and see :-)


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