I'm building a power supply for a cnc router powersupply. The output has to be 36 volts at 12 amps. I'm going to use 6 of the 25.2 volts, 2 amps transformers at radioshack (I have a coupon). When I rectify it it should be about 36 volts. Couple questions about transformers 1) don't transformers essentially short out an AC socket? I don't wwant to start a fire. 2) how can I have a LED indicator that indicates that each transformer is working? I don't want to use a huge resistor, because that seams inefficient. 3) how big of a filter capacitor do I need? I have a 33000uF capacitor, think it's a bit overboard? I know I need at least 4800 uF for just stuff like motors, but the only capacitors I have that works above 50volts is that capacitor. 4) can you connect AC in parralel? Can someone draw be a diagram?