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Old 05-06-2008, 09:42 PM
Ian Robinson
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Ian Robinson is offline
 
Join Date: Jan 2007
Location: Gateshead
Posts: 2,205
Quote:
Originally Posted by AussieSky View Post
You'll need a 1 - 1.5 amp 12V 'plug pack' style regulated power supply from DSE or Jaycar to run the fans. Get a RCA plug and connect the + from the plug pack to the center pin, and the - to the sleeve. You probably should also put an inline fuse in there just in case. If the fans spin backwards, reverse the polarity...
Or something like this (attachment) to drive from 12VDC

If you connect in parallel to a 12VDC supply , the duty is 100% and the fans should spin at max revs.
Attached Files
File Type: doc The Power Amplifier Circuit for 3 x 12VDC Fans.doc (50.0 KB, 16 views)
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