
05-01-2013, 07:35 PM
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TeChNiCaL DiFfIcUlTiEs
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Join Date: Aug 2011
Location: Cobargo
Posts: 209
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Easy DEW Heater
Hi IISers!
After a lot of umming and ahhing I bit the bullet and built a very cheap, and suprisingly good Dew heater.
I've taken a different approach then other people have, this one requires minimal soldering, controls 4 heating straps with independent control of each strap.
4 x 12/24volt 8amp dimmers from ebay $3.50 each free postage
4 x 12volt LEDS $7
4 x RCA Male jacks $8
1 x 4 way RCA female plate ( I had this lying around in my parts bin)
8mtrs of speaker wire $8
1 x Screw Box FREE!! spray painted black
12volt 2A power supply (scavenged from old dead flood light)
1 x toggle switch $2
its just a case of using the screw clamps inside the Dimmers to attach all your wires, run the 4 dimmers in parallel, mount it all in a box, drill some holes for the LED's and the Dimmers and hey presto, dew heater!
I went this direction as my electronics skills are very basic and I am doubtful i could build the JCar kits without sending myself insane! So this is the cheapest and easiest way i could find to build it.
Here are the photos
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