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Varistor or SCR or something else...

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hypochondriac

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I used to play around with electronics after getting out of college. Making and playing with circuits as I'm sure a lot of you do. I had made up this circuit that would turn on and off 120vac motors. I thought what I had used was a Varistor but I'm seeing that this is used for voltage spikes. Is it a SCR that I'm looking for? Is this used to power things on and off such as a 120vac motor? Or, am I totally way off on my memory...

Thanks people
 

ericgibbs

Well-Known Member
Most Helpful Member
I used to play around with electronics after getting out of college. Making and playing with circuits as I'm sure a lot of you do. I had made up this circuit that would turn on and off 120vac motors. I thought what I had used was a Varistor but I'm seeing that this is used for voltage spikes. Is it a SCR that I'm looking for? Is this used to power things on and off such as a 120vac motor? Or, am I totally way off on my memory...

Thanks people
hi
Your looking for a TRIAC for 'ac' control, or two SCR's back to back.

http://www.tpub.com/neets/book7/26e.htm
 
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