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[Ernst Denbroeder]

> >That's a good question.  How do they PWM the coolant fans? I know I
> >can hear the relay clicking away..
> >Shannen
> 
> I believe it's (the actual switching) done with an SCR, but that is coming
> from a total klutz in terms of electronics.
> 
	Close... :)  SCR's are used for AC applications.  An SCR relys on
the 0V crossing to turn off.  And a TRIAC is two SCR's in parallel (sort
of).  :)

	Ernst.