I was listening to the freeenergynow podcast and they were talking about the Joe cell phenomenon and browns gas which seems to be the most popular form of free energy these days. During the podcast the guest was mentioning the root cause of this phenomenon to be electric resonance. Not this is understandable that ac current creates a sine wave but most of these devices are charged from a 12v DC battery. Correct me if Im wrong but wouldn't DC current not create a resonance unless it is pulsed. How can DC current create a resonance?