I have been working on an Arduino project for my dad's model train sets. I have all the code down and ready, i just need transistors to drive all of the electronic parts such as lights and engine motors. All of the lights work with our current power transformer so i can send the power from it through transistors switched by my Arduino. My problem lies in my lack of electrical knowledge and I am not sure about what kind of transistors to get based on the power output of the transformer.
This is a picture of the transformer showing it's input and output voltages. http://i.imgur.com/B1sOPMZ.jpg
What i would like to know is exactly how many amps and are put out in AC and DC current, as this transformer has power outputs for both. Thanks for reading this and if you help me, even more thanks.