On Fri, 7 Nov 2003 11:03:56 -0600, "Gene Bigham" <jbigham2@kc.rr.com>
wrote:
>What is a zero crossing power switch?
_________________________________________________________
It is a switch that senses when the voltage crosses the zero point in
the AC cycle and makes the connection at that instant, thereby
reducing the initial current surge.
There is a current-sensing variation that turns off the power when the
current crosses the zero point. In a reactive circuit, the voltage
zero and current zero occur at different times, thus the need for
different sensors.
--
Bill, W7TI
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