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Old 05-06-2011, 01:19 AM   #1391
mattd2
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Sep 2009
Papamoa, New Zealand
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Quote:
Originally Posted by Wayne1 View Post
Here is a look inside the 120 VAC temp controller
I do not have a 220V unit to compare. ere109, if you want to send me yours or come over with it, drop me a PM and I'll be happy to open it up and post some pictures.

I would hazard a guess that anyone who wants to change the 220 to 110 would have to change the transformer at a minimum.
So I have a limited knowledge of electronics but I would guess the issue is the transformer, I am guessing that the 220V do run on 110 because 4.5V (half of 9V) would probably be just enough to get the control circuit going but not enough to get the relays going, you could just change the relays but you control circuit would still be just surviving (and would probably cost more than replacing the transformer!)

http://www.futureelectronics.com/en/...GNETICS9579905 and at under $3 it seems worth it

this looks like the piece to buy and replace (pending confirmation upon opening of a 220v unit)

Eidt: stupid work getting in the way of reply on HBT , was that the first result on google for you too o4 SRT?

 
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Old 05-06-2011, 01:24 AM   #1392
o4_srt
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Quote:
Originally Posted by mattd2

So I have a limited knowledge of electronics but I would guess the issue is the transformer, I am guessing that the 220V do run on 110 because 4.5V (half of 9V) would probably be just enough to get the control circuit going but not enough to get the relays going, you could just change the relays but you control circuit would still be just surviving (and would probably cost more than replacing the transformer!)

http://www.futureelectronics.com/en/...GNETICS9579905 and at under $3 it seems worth it

this looks like the piece to buy and replace (pending confirmation upon opening of a 220v unit)

Eidt: stupid work getting in the way of reply on HBT , was that the first result on google for you too o4 SRT?
Haha yep. I'm at work also, but jumped onto a pc to search for it, then posted using hbt mobile.
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Old 05-06-2011, 02:13 AM   #1393
Chrisl77
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Mar 2011
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The transformer is the only diffrence. Amoy Magnetics BV302S10013-JY-A.

 
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Old 05-06-2011, 02:22 AM   #1394
o4_srt
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Quote:
Originally Posted by Chrisl77
The transformer is the only diffrence. Amoy Magnetics BV302S10013-JY-A.
There you go. Swap the transformer and you're set.
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Old 05-06-2011, 02:33 AM   #1395
Chrisl77
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One strange thing the relays have the same model number but i just noticed mine say 10A 277VAC and 15A 125 VAC. Now to see if i can find a place with that transformer in stock.

 
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Old 05-06-2011, 02:39 AM   #1396
o4_srt
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Quote:
Originally Posted by Chrisl77
One strange thing the relays have the same model number but i just noticed mine say 10A 277VAC and 15A 125 VAC. Now to see if i can find a place with that transformer in stock.
There is a link several posts up the exact transformer used in the 110 model
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Old 05-06-2011, 02:42 AM   #1397
Chrisl77
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ya i followed that its not in stock and they want $9 for the cheapest shipping.

 
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Old 05-06-2011, 06:01 AM   #1398
ere109
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Mar 2011
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Wayne, thank you for taking the time to respond to this. I knew there would be a solution, and I really appreciate your attitude and efforts to help. I know I'm not the only one who has purchased the wrong one, so hopefully we can come up with a solution for everyone.
I pulled mine apart tonight. It's VERY easy - took all of five minutes. It's still the same STC-1000 model, but the transformer clearly says 220v. The switches have the same part number, but different amperages written on them. Strange. Aside from that, here are the specs:
220v AC 50/60hz
Relay capacity 10A/250vac

There are four solder points under the transformer, so desoldering four contact points should be something many members can do. So are we just looking at swapping out that transformer?

Quote:
Originally Posted by Wayne1 View Post
Here is a look inside the 120 VAC temp controller







I do not have a 220V unit to compare. ere109, if you want to send me yours or come over with it, drop me a PM and I'll be happy to open it up and post some pictures.

I would hazard a guess that anyone who wants to change the 220 to 110 would have to change the transformer at a minimum.
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Old 05-06-2011, 06:29 AM   #1399
ere109
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By the way, I found the 110v transformer in stock at the link below - minimum $10 order, so we'd need to buy five at a time (it complicates things, but I'm sure there are people in various hub locations that could group up, or one person buy a large order and individually ship).

http://estore.heilind.com/search_octo.asp?p=BV301S09015

 
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Old 05-06-2011, 01:24 PM   #1400
Wayne1
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Quote:
Originally Posted by ere109 View Post
By the way, I found the 110v transformer in stock at the link below - minimum $10 order, so we'd need to buy five at a time (it complicates things, but I'm sure there are people in various hub locations that could group up, or one person buy a large order and individually ship).

http://estore.heilind.com/search_octo.asp?p=BV301S09015
With shipping that breaks down to roughly $5.50 each, to Colorado. I am willing to order five transformers. I can install them in the circuit boards and ship them back. Shipping to and from CO will entail at least another $10.00 for USPS small package flat rate boxes.

So is it worth it for a minimum of $15.50 to get the transformer changed to work on 110V AC?

Or, are there five people in CO who have these units and want them changed to 110?

 
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