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Flux Reversal

Flux Reversal

Flux Reversal

(OP)
Hello,

When an Inductor is disconnected from a power supply does the magnetic field produced by it reverse in polarity like the voltage does?

If so what Law describes this?

RE: Flux Reversal

The flux decays, it does not reverse.
The current tends to continue flowing in the same direction.
The voltage is in the same direction and is the product of the instantaneous current and the instantaneous impedance.
   

Bill
--------------------
"Why not the best?"
Jimmy Carter

RE: Flux Reversal

(OP)
Thanks waross,

The Flyback voltage is of reverse polarity is it not?

RE: Flux Reversal

Yes. If supplied with a positive voltage, the kickback will be negative. Quite often (if there are capacitors in the circuit) it will also oscillate. But it always starts negative.

Gunnar Englund
www.gke.org
--------------------------------------
100 % recycled posting: Electrons, ideas, finger-tips have been used over and over again...

RE: Flux Reversal

(OP)
Thanks Skogsgurra,

That's what i thought.

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