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-   -   STC 1000 "Ebay" Temperature Controller Build (http://www.homebrewtalk.com/f51/stc-1000-ebay-temperature-controller-build-330427/)

RisenDeadBrewing 05-22-2012 11:27 PM

STC 1000 "Ebay" Temperature Controller Build
 
Here is my wiring diagram:

http://s29.postimg.org/el0ne7ctz/stc...ng_diagram.jpg


I went with 2 outlets, because i want my cooling outlet to control the fridge and a fan that'll move air around in the chamber.

jasonclick 05-29-2012 04:00 PM

I've checked these out on ebay but they all say that they need 220VAC power supply. Is there a selection somewhere to also use 120?

Double-R 05-29-2012 04:07 PM

From USA
http://www.ebay.com/itm/50-to-99-Deg...item2570b20b00

From china

http://www.ebay.com/itm/30-Off-110V-...item3cc6101acb

lizardeye 05-29-2012 04:08 PM

There are 110v versions on eBay.You just have to look for them.

jasonclick 05-29-2012 04:10 PM

thanks

RisenDeadBrewing 05-29-2012 05:16 PM

Most of the sites automatically send the 110v version if you live in the US. When in doubt ,contact the seller

Revvy 05-29-2012 06:04 PM

Quite a lot of us have ordered them from Ebay Seller Mixtea. His turnaround from China is really fast. I ordered 2 more of them on Monday, and it looks like according to the tracking info I should have them when I get home.

This will be the third I've ordered from him. His state whether or not they are 110. Here.

lincoln 05-29-2012 07:19 PM

just one thing to point out that the contacts are only rated for 10 amps. A pair of fuses would be a good thing to add. For my deep freeze I had to run an external relay.

Huaco 05-29-2012 08:30 PM

Quote:

Originally Posted by lincoln (Post 4125196)
just one thing to point out that the contacts are only rated for 10 amps. A pair of fuses would be a good thing to add. For my deep freeze I had to run an external relay.

Would the fuse block go inline between the power-in line and the component? Would it just be a 10 Amp fuse to protect the 10 Amp controller?
Also, could you expand on your external relay idea? I plan to control a refrigerator or a deep freeze with mine that I built this weekend, but have not put it under load yet...

divi2323 05-29-2012 08:41 PM

Quote:

Originally Posted by lincoln (Post 4125196)
just one thing to point out that the contacts are only rated for 10 amps. A pair of fuses would be a good thing to add. For my deep freeze I had to run an external relay.

yay! a search pulled up a thread similar to my situation. Have a question for your external relay setup as well. I've got a similar temp controller (one channel only for cooling though). Seems as though my compressor draw amperage is higher than the rated capacity of the switching controller internally. (5 amps on the controller circuit vs 5 amps operating draw on the compressor, meaning the draw to get the compressor motor going is more than 5) My compressor will not kick on when the circut detects it's time to start cooling. My solution is going to be an external relay but i'm not sure which type of relay to use.

my switching circuit is 120v/5A, but the power side of the relay needs to be 120v/10A or 15A. I've found some relays on radio-shaft's website, but not sure what i need. Can you maybe elaborate on what relay i would need to drive it? SPDT, DPDT etc?


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