How do I controll turn on/off a 12V feed with a 0 and 5V sig

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I have some basic knowledge about electronics. But I'm in need of more. I have a PIC12F675 that outputs 0V for low, and 5V for high signal. I need to control some kind of switch or something with that to turn on or turn off a 12V fan. Just need two cases. 0V output from PIC = 0V for the fan. 5V output from PIC = 12V to the fan. How can I do this?
I'm going to use it for a fancontroller.
 

Re: How do I controll turn on/off a 12V feed with a 0 and 5V

Well it aldpends on how much current you want to control but if you do a search on google you will find what you want this is really simple stuff,

http://www.kpsec.freeuk.com/trancirc.htm

That should get you started

wizpic
 

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    Megamannen

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Re: How do I controll turn on/off a 12V feed with a 0 and 5V

Thank you very much. I think that's exactly what I want!
 

looks like a relay switch is needed, there qre sinlge or multiple switch relays, where you may find applicable one, just remember to put a diode in paralle to the control loop to absorb the glitches during switching.
 

Re: How do I controll turn on/off a 12V feed with a 0 and 5V

Maybe you can also use Solid Switch Relay(SSR) to achieve your requirement.

Hope it can help you...
 

Hi,

Use a transistor to drive a relay.
Use the relay with appropriate current ratings.
and use diode in reverse across relay(supply and collector of the transistor).

I think it will work
 

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