Pulsing a byfilar coil can add more charged electrons to a system than was used to pulse the coil. Perhaps a strong statement, but allow me to prove my point.
The byfilar coil is a unique arrangement. It can be wired in several different configurations, but I only wish to talk about two.
Series and parallel. Lets suppose we have a coil made of (2) layered windings at 20 ohms of resistance each. Wire these (2) layers together in series by connecting the end wire of the first layer to the beginning wire of the second layer. (See drawing below) This doubles our resistance to 40 ohms. If we apply a voltage and current to one end of the wire, a small cumulative effect occurs known as the E-field. This current in simple terms is working magnetically with each other flowing in the (2) windings. There is no cancelation between the two, only a additive effect. If we pulse the voltage and current towards the limit of the wire resistance of 40 ohms and abrubtly disconnect power and switch the (2) coil windings to a parallel connection. What happens? If we also provide a large cap in line with this coil in the collapsed state, we have created a large electron sink. The windings are now instantly at 20 ohms of resistance (each) in the collapsed state. BEMF literally floods into the parallel coil windings with a vicious cooling effect. The same amount of wire, but one half of the resistance. This electron avalanche effect will overshoot and also fill the capacitor easily in this collapsed state. Then we are ready to switch back to series and start the process all over again with a increased additional supply of charged electrons in the capacitor. We can use these newly charged electrons in anyway we wish. One can accumulate and dump them back to the supply battery or send them elsewhere to supply another load of sorts. Click the link below to see the drawing.
Electron sink drawing.
