The secret to practically obtaining the radiant energy from the ambient vacuum is in using a PULSE to resonately "pump" the circuit. That's what the magnets crossing the coil produces. The back EMF, that occurs as the coil collapses, is "cold electricity" (radiant energy from the quantum vacuum -- i.e. the TIME DOMAIN) which is almost instantly transduced into several hundred volts. That pulse is what continually charges the battery with real and usuable EM energy.
Put an ordinary DC to AC converter onto the circuit and one can run ANY AC applicance with no alteration.
In any battery circuit there are TWO currents. 1) an ION current in the battery and 2) the electron current in the circuit. IONS are much heavier than ELECTRONS and so there is a very slight time lag in these two currents. That lag is exploited in this method.
http://jnaudin.free.fr/html/paraform.htm
Jean Luis Naudin has an experimental energy lab in France and is one of the people who has sucessfully duplicated Tom's Motionless Electromagnetic Generator, although he is mainly interested in anti-gravity propusion systems which he has been working on now for decades.