I apologize for the off-topic post but there are few forums for me to discuss my topic. I want to do some simple electroplating experiments at home and need roughly 100 to 900 milliamps of current. I figure a model train controller may be suitable, but I know nothing about them. Are they simply AC to DC converters? Can someone recommend one that fits the range that I need? Again, sorry for the off topic, but I hope someone can help.