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Old 02-27-2012, 07:27 PM   #1
kennywd
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Default Sct-1000 230v to 120v conversion

This is for everyone that bought one of those 230v controllers this will save you from having to order a new one or tryin to buy an replacement transformer that fits into that spot. Also I know that some ppl have thought of this, but I had a hard time finding any one one that has done it this way.

Materials needed:
1x 230v temp controller
*1x Input: 120v
output:10vcd 800MA+ transformer plug

*Edit: also the transformer maybe overkill you may be able to use as low as 10v 180MA. If this is the case maybe easier to find a plug. Someone correct me if I am wrong. Also the type of transformer plug depends on what type of transformer you remove so you may have to double check that..


Tools needs
soldering iron/desodering
voltage meter

I CAN'T STRESS ENOUGH THAT ELECTRICITY IS DANGEROUS!

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remove your old transformer from your temp controller.
*EDIT: this transformer I removed has a 10vdc output, and input of 220v. I was informed that you may have a output of VAC so you may have to check with with a voltage meter before you remove.



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locate your transformer plug. I found mine at a good will for $0.99. But I find them at flea markets, or it may be laying around your house.
Edit: I needed a 10v but will add a resistor to drop the voltage so I don't overheat it.

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Once removed remove the the end jack for The transformer plug.



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Now install the two ends of the wires to where your old transformer was. Make sure to soder the wires to the two inside holes.
or you can do what Monster Mash has done on the right. Which would allow for you to use the original hookup.



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Now turn that baby on. I tested it and it works.

Hope this helps some of you with these just laying around.



Also post pics if you attempt this so that can help me improve on this controller.


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Old 02-27-2012, 07:55 PM   #2
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Quote:
Originally Posted by kennywd View Post
Now turn that baby on. I tested it and it works.

Hope this helps some of you with these just laying around.
Did you also test that the relays open + close as they should? That's the important part

MC


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Old 02-27-2012, 08:02 PM   #3
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Yeah that's what I had tested. Relays open and close. Tested both cool and heat relays.
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Old 02-28-2012, 07:38 AM   #4
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Ok so I built my temp controller, andhere is the set up I went with. I put the transformer on the right side of the box because I didn't what the extra heat inside the box. the left side is the cold relay attachment with a fuse attached. This saved me some money, with just a little extra time.



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Old 02-28-2012, 05:32 PM   #5
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Added my chart, now need to figure out how I really wanted to attach it to the fridge.

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Old 02-28-2012, 06:38 PM   #6
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Could also have used the right female fitting for the power supply and mounted the power supply remotely. Either works.

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Old 02-28-2012, 06:43 PM   #7
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True, I just had extra plugs and didn't care where I had put it. Plus i had scrap wire and only had so much of it. I have had the 220v eBay controller for about 6 months, and as soon as i thought of my idea(1day ago). I may have rushed my layout for this device. But it works and thats all that matters to me now!
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Old 02-28-2012, 09:43 PM   #8
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Running a test to see if I can get lager temps with my fridge. I really need some newer fridges.
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Old 02-28-2012, 10:13 PM   #9
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Nice job. You probably could have put jumper wires to the other holes where the transformer was and used the terminals to connect the transformer plug.
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Old 02-28-2012, 11:24 PM   #10
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You... are... my... hero!!


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