Hello Peculian,Thank for your endorsements and the useful insights and encouragement.To answer the question as to a AC output on L2 when the initial current on L1 is Pulsed DC here goes my very Layman, (Please remember, I do not have a Degree in Electronics and Electrical Engineering ; )).Here is what I think happens.Pulsed DC is still changing electricity.So you have peak to peak pulses of one sign.Now that is on L1 wrapped on a ferrite core (which has overunity caharacteristics) When L1 is pulsed, as the waveform (squarewave) rises power enters and is stored in the ferrite, a magnetic field is formed that simultaneously grows with the rising current from L1.L2 through induction is affected by this rising waveform so a current is induced in one direction.When L1 switches off the field collapses in L1 and so does the induced power in the core.The collapsing field also induces and causes a current flow in L2 but in the opposite direction.You now have AC.Manufacturers need to have DC from the flyback so they inserted , diodes inside L2,in fact some patents show several diodes in series at various points in L2.This is done to reduce any generated AC component as best as possible.I have measured AC voltage from my flyback when pulsed with DC 10 volts.Apparently, although not as high a value as the DC component, it still appears significant.AC still forms even after passing the embedded diodes.I have drawn information from the following sources regarding this phenomenon:(1.) Patents: Flyback Design.(2.) Naudins Solid State Generator: Notice he uses pulsed DC in and uses diodes to rectify the output from coil 2. http://jnaudin.free.fr/2SGen/indexen.htm(3.) Magnacoster Device: Lots of diodes at the output despite pulsed DC in.(4.) PJK Chapter 11 page 115 May edition.(5.) LaserSabers Joule Ringer and other Joule Ringers that have secondaries.You are all welcome to debunk, clarify or add to what was said.This is my understanding at this time and I am willing to learn from others.Regards Ged