Back EMF example 1

190

02:38:03

3V AC supply. Transformer is 1:1. Blue voltage spike showing on Voltmeter shows 30.7V which follows each discharge of the coil. 

Right circuit introduces a diode to mitigate spike. When switch closed, spike reduced to mV range. Opening switch results in a very large spike followed by regular smaller ones. 

  If I understand correctly, certain inventors have been able to utilize this phenomenon usefully to do some kind of work or store, although I'm not sure how to here.

Note: Lower frequencies can be used to produce higher voltages. 100Hz will produce about 48V, for example. Make sure to speed up sim time.

published 3 years ago

Rsleo06

3 years ago

The engineers can harvest the horrid backEMF to their advantage, like ignition coils or a pulse inductor that is used in novelty a shock toy device, overall some amount of use.

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