PhysicsProf Steven E. Jones circuit shows 8x overunity ?

[forest]

Btw. do you have a feeling that something is wrong with all simulations  ?

1. At start occur strange spike of energy
2. Final result sometimes depends on which time of computation data is presented to user; for example if from starting point or from some time later (even 0.01ms later)

[lanenal]

Btw. do you have a feeling that something is wrong with all simulations  ?

1. At start occur strange spike of energy
2. Final result sometimes depends on which time of computation data is presented to user; for example if from starting point or from some time later (even 0.01ms later)

Thanks for the upload, will take a look when I get to my LTSpice.
The spike is probably by reason of cap and the ideal voltage source, and for #2, I don't know, that would be quite easy to fix. It seems to me, when you simulate a long time, and only capture the last moment, the whole simulation would still start from the very beginning and take the same amount of work to finish.

[JouleSeeker]

  Laneal -- I see, I will try your "top circuit" later today, grand-child permitting. 

Would you check your SIM -- will it allow LED to light up with 5uW input power?  (Xee2's circuit, for example -- straightforward circuit to test.)

[xee2]

my LTSpice simulation

You have gotten really good at spice. I did not realize LTspice had coupled coils. Can you recommend a good site for tutorial?


EDIT: I like your 2N2222 circuit. It should be very efficient. But, looking at the plots it seems that input current is larger than the diode current so I do not think it will self-run. Am I missing something?

[lanenal]

You have gotten really good at spice. I did not realize LTspice had coupled coils. Can you recommend a good site for tutorial?


EDIT: I like your 2N2222 circuit. It should be very efficient. But, looking at the plots it seems that input current is larger than the diode current so I do not think it will self-run. Am I missing something?

Thanks, Xee -- it is partly by reason that I was not very good at building, but I am getting better slowly. You have done a lot of good experiments to inspire many here.

I mainly used the help system, and played a little with the example circuits come with it. The "K L0 L1 0.9" directive is introduced not too long ago, it is documented somewhere in the system.

I agree with you, according to the simulation, no self-run is possible. Is it ever possible with traditional theory?

@Professor, will do some simulation when I get to my LTSpice.