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[EMdevices]

thanks for those graphs Yucca,  that's exactly what we need more of, on this forum, i.e., more experiments and less theory!  (and I'm just as guilty as everyone, but not for long)

EM

[otto]

Hello all,

@Grumpy

you said that the vibration is just a secondary effect.

Secondary effect of what?

Can you imagine this could be the main, the most important effect?

@All

Im not so clever as a lot of people here are, so maybe somebody could  explain me what happens during 1 kick in a coil?

Is this the basics? Yes.

Otto

[Mannix]

So the movement is what generates the energy?  that would explain the cork , and the bath tub voilence.

so how to get the movement ?

[otto]

Hello all,

@Mannix

first we have to know what happens with our kicks in the coils:

We have an action - a kick
Then we have an reaction - the collapse

What effect is stronger? The action or reaction?

The movement is not a problem.

Otto

[BEP]

Hi BEP, just tried the bucking config (bifilar one end shorted).

Below are frequency response graphs. like a spectrum analyser, Left of scope screen is DC, right is 40MHz (ish) the sweep is linear so about 4MHz per horiz division.

Bucking seems to make the higher frequency peak increase and knocks out the lower.

Hmmm....

Exactly the opposite result from what I have seen...

My coil wasn't exactly like yours. It looked like the small toroid on the FTPU and LTPU. The primary reversed wind direction half way around. The secondary was 30 turns of enamled garden wire.