Shorting coil gives back more power

[romerouk]

romero, fascinating... could you clarify that for me? were you driving in attraction or repulsion, where did the short take place, before, during, or after the power pulse?

Ron

I was driving in repulsion.Transistor also had a diode 1n4007 to capture the BEMF.After few seconds running all components where dead, inclusive the diode.I had it running ok for hours but only when I shorted the BEMF with the capacitor all went KAPUT....
Now I am using SS DC Relay 280v/50A and it looks much better, I hope I will not blow that one too, it is quite expensive. I'll do more testing later.

[bolt]

Very good work GK. Good investigative skills breaks down the hype into simple explanations. As far as i know Ismael Aviso Meg works similar but he doesn't use perm magnets but rather powerful electro magnet coils which oppose each other to generate intense flux field. Its the collapsing reflux which is OU and not the energising flux so you must make sure your load is not applied during pulse activation but only on the collapse. As the collapsing flux leads the current pulse you short the sine several times on the peaks gives energy boost. Its by far not the best technology though with a COP of just 2.7 typical of MEGS puts it way behind Kapandze COP about 100 and TPU and VTA the COP >1000. But hey a COP of 2 or 3 would be a nice start!

[giantkiller]

The iron core lowers the C.O.P. Better to have air or copper.

[popolibero]

Hi Romerouk,

Shorting the BEMF is a better approach, timing is very important.
I have redone my circuits and now I am using better components.
One thing to mention, I am not shorting the coil directly, I am doing it with a capacitor, in fact the shorting is adding a capacitor in parallel with the coil.The capacitor value in my case is 0.33uf.

This way you can collect some energy with that cap as well and dump it to a load every once in a while. Your shorting spike will probably be a bit less in voltage though, depending how much you let the voltage climb in the cap. Higher voltage in that shorting cap is like having a higher ohm resistor, thus the bang from letting go will be smaller.

Mario

[giantkiller]

The circuit of the scope shot of the shorting on the peaks hasn't shown up yet. It is zero crossing.
Anybody got an idea for one?
Thinking of using 555s myself.