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How do I go about making a Lutron 120vac 60hz household dimmer light switch capable to use for 12vdc?? Answered

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I want to use this switch for examle in my car connect by the accessory or cigarette lighter plug and it will run a 12vdc fan motor i can control cfm/speed.





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user
orksecurity (author)2011-01-19

Can't be done. Use a motor control circuit designed for 12VDC. That'll probably be cheaper too.

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user
orksecurity (author)orksecurity2011-01-19

(Well, it can be done if you invert the 12VDC up to 120VAC, put it thru the dimmer, then use a transformer and rectifier and filter to convert the output AC back down to DC. But trust me, you don't want to go there.)

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Zerocool818 (author)orksecurity2011-03-20

that will waste way too much power in the form of heat

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orksecurity (author)Zerocool8182011-03-20

Like I said: You don't want to go there.

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steveastrouk (author)2011-01-19

Won't work, because they need AC supply to operate, since they use a triac which won't turn off unless the voltage across it drops to zero ( I simplify slightly)

As Ork says, this won't work

Steve

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