Here is another parts post for a 12V @2A switching power supply. This unit is small and has an aluminum case with cutouts for mounting. I used this power supply in my Reflow Controller project. You can find it on ebay here (link will expire) or search for a DC 12V 2A Switching Power Supply Regulated. You will more than likely get multiple results.
Hobbybotics 
Nice part of transformer..but you didn’t describe the functionality of this part. recently posted on : Transformer Manufacturer India
Fair enough…the switching power supply takes 120 – 240 VAC and converts it to 12 VDC. Max current draw is 2A. Switched Mode Power Supply
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National Power Supply
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National Power Supply