I have an exercise machine turning a stepper motor with a full wave bridge rectifier that is putting out 30~40vdc and 200mh. The project is an experiment for our elementary students. I connected the two negative and two positive wires for the dc output. How can the voltage be halved and the current doubled. Joining both poles in this manner would seem to be in parallel. Fact is, I don't really know what I am talking about! Ohm's law must apply here but I don't know how to wire it. Any help would be appreciated.