This circuit is also known as a "step-start" circuit.
On Friday, January 2, 2015, Clive Penfold <clivepenfold@xxxxxxxxxxxxxx>
wrote:
> The simplest circuit that I have seen to limit the inrush current into a
> highly inductive low resistance load is merely a mains relay or contactor
> and a low value resistor.
> The relay is after the on switch, straight across the mains, and when it
> pulls in, it shorts out the resistor which is in series with the load.
> The short time it takes for the relay to operate is enough for the
> magnetic field to become established.
> Regards,
> Clive
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--
Dave Sharpe, TCBOR/HEAS
Chesterfield, VA USA
Sharpe's Axiom of Murphy's Law
"Physics trumps opinion!"
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