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pjd
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« on: January 23, 2011, 01:30:38 PM »
Hi all,
I've just built this kit
with which i'd like to control a 12v car fan (the type that plugs into the car's
cigarette lighter) ....
Could i use the same 12v dc supply which powers the circuit to power the fan, just
using the relay in series to switch the fan on & off ?
Or will that short out something ?
Thanks folks !
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Hero999
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« Reply #1 on: January 23, 2011, 02:04:51 PM »
Yes  don't see why not, although it's difficult to really know without a schematic.
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pjd
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« Reply #2 on: January 23, 2011, 02:53:24 PM »
Hi Hero, thanks for replying ...

There's a schematic at the bottom of the link i posted,

what i'm hoping is i can connect GND to X3-2 (relay common)
and then put the fan between X3-3 (relay n/o) and the +12V

(or put the fan between GND & X3-2, and connect X3-3 to +12V )
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Hero999
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« Reply #3 on: January 23, 2011, 03:25:39 PM »
Oh sorry, I missed the link.

Yes either of those options will work.
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pjd
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« Reply #4 on: January 23, 2011, 03:51:31 PM »
Excellent !
Thanks Hero.
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