Overunity Device Using Transformer -- Need HELP with theory Ok, so if you had a transformer with a single primary winding and multiple secondary windings - let's just say 10 secondary windings - what could you do with this? Say if all of these windings were 1:1 with the primary to the secondary. In theory, you could charge a battery with 5 of the secondary windings and then switch the original power source of the primary winding to the battery which output the same voltage and current as the original power source. So you'd essentially have a unity circuit already running. Could you use the other 5 secondary windings to power external sources like another battery which could be used for several things? This would be considered overunity I believe. Since you are outputting more power than was originally input into the device. This transformer could be a standard solenoid or a toroid. Alright, correct me if I'm wrong with any of this theory. It seems possible, but I could be missing a few things or even everything. I'm probably skipping over something completely necessary to electrical engineering. Any input would be very helpful.