Steven Mark`s TPU

[ronotte]

Hi Otto, Gustav22,

it happens that both Otto and me did the collector-coils in the same time without knowing....so not having any special clue to follow I did the 3 collector coils all the same: 6 turns of standard twin lamp-wire of 0.75mm diameter.

Roberto

[BEP]

@All

If it is easier....

For resonance changes:
I suggest increasing the number of control coil turns to bring the frequency up. In perpendicular induction it seems here that the number of times the control wind 'cuts' (squeezes?)the collector has more control over frequency. The spacing and quantity of control coil turns almost relates to waves.
If this is true you could increase the 57 turns to increase natural resonance -or- INCREASE the amount of wire on the collector so it is 'cut' (squeezed) more often.

Very confusing - I know.

[tosky]

@Otto
As long as you connected the Power supply to the TPU, you always found strange discoveries. You seems forgot the Power supply feed control circuit story. I don't want to bother your funny experiment. But I hope you could be more concentrate to real finding. Why not use a battery instead of power supply. Could you still get the same result while using battery? It may be less funny!

[tosky]

@Otto
You said about learning, you seems learned something but after a while then forgot everything. How many times you were played by the Power supply feed back control circuit. What happened this time is still the frequency jam into your power supply lead to a higher than the preset voltage at the output. You alway think the power came from the TPU but actually from your Power supply that power source from your power company.  If you don't believe me, you can use a current clamp meter to check your input current to your power supply. This is why I suggest you should always use a battery to do all experiment.

[Frederic2k1]

@ ronotte,  short question:

Did you try to first cut of the signal-input and then disconnect the mosfets... ? Do you reached then auto-oscillating, too ?