I have been looking for a small transformer to power a few lights for my wife's dollhouse. In my search I found these on Amazon.Com:
LightTech 60 Watt transformer.
http://www.amazon.com/LET-60-C...rds=lightech+60+watt
They are also available at Home Depot and other electronic stores. Home Depot has them for about $15. I have bought two so far and they seem to be very dependable. I picked the up 60 watt versions but they also make a 75 watt and a 150 watt version. The 60 watt is about the size of a 9 volt battery. Its really tiny. It has overload protection and short circuit protection. They do not get very warm and make no noise. For the price I found they can't be beat. The 60 watt version can handle up to 5 amps.
I just had to wire a plug on the black and white wires. The blue wires are the fixed 12 volts. The transformers have a minimum load rating in order to supply power. I believe the 60 watt minimum load is 3 watts.
For the size of a 9 volt battery, they can't be beat.
