Re: self-induction recuperation diode, what is it???

....
Any magnetic (inductive) device stores energy in proportion to the
square of current passing through it. If you break connection to both
ends of the inductive load, you can recover most of the stored energy
back into the supply with two diodes. If you charge up and dump the
inductive load often, this can amount to a considerable energy
savings. The alternative is to just turn that energy into heat to get
rid of it.

Thanks for sharing your valuable knowledge John,

I do understand how an inductor behaves but as often happens I got confused
about the terminology. So the self-induction part is not referring to a
special kind of diode, but rather to a specific use of a diode, meaning
recuperating self-induction from a inductive load, in this case the motor.

But what would really happen if the diodes weren't there? Assuming that the
output ports on the 298 driver do not zink any current caused by
self-induction in the motor, without the diodes would the self-induction be
dissipated in the motor's coil-windings? Also, are the diodes there to also
protect the outputs of the 298 driver IC from spikes caused by
self-induction in the motor?

erik












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