Steven Mark`s TPU

[turbo]

How do you induce electrons flowing in opposite directions?  Hows does this effect the votlage and current in the wire?

Why don't you try it?
It's quite easy, but it won't fit your book.

If you want to stick to the spark gap fine....i don't care.

M.

[otto]

Hello all,

I tried to filter out the most important words from "dfros" 2 postings. I was mostly interested in HOW to build our devices. Maybe I missed something so feel free to add some points.

Post no.1

1.Collector coil wrapped around the circumference SEVERAL TIMES
2.Augmented the collector coil with other vertical coils, which seem to be wrapped around METAL CORES
3.These windings could be extensions of the collector coil and connected in SERIES with it and EACH OTHER
4.Other sets of coils could be oriented as if the windings were wrapping around imaginary wheel spokes?
5.Very quick HV pulses
6.All of the coils attached to CAPACITORS to create tank circuits
7.A DIODE IN SERIES with the caps of the tank circuits
8.a little battery to run the pulse control circuitry
9.A few 555 Ics for driving some kind of fast HV MOSFET driver to make 1 - 4 sets of very fast, short on-time pulses, which are HARMONICS of each other
10.SS diode/cap circuit to step up the voltage from the BATTERY for the pulses
11.The magnetic flux has just spun 90 degrees ( THIS MEANS WE NEED 4 CONTROL COILS) and moved over from input coil 1 to vertical collector coil 1.....
12.Collector coil and its vertical coils have CAPS IN SERIES, ALSO
13.Collector with the vertical coils is tuned to have its resonance at the LOWEST fundamental frequency, and the input coils are the HARMONICS of that
14.HIGH OHM LEAKAGE RESISTORS are placed in PARALLEL with EACH capacitor in the various tank circuits.

Post no.2

1.Smallest device - single vertical coil wrapped around some kind of CORE in the middle
2.On the device where he places 2 magnets, he has what look like 4 METAL CORES with what I imagine would be coils wrapped around them

I used "dfros" words.I hope I didnt forget something. Again, this is only how to build a TPU. Some confusion is about his names for the various coils.

collector = collector
input coil = control coil
vertical coil = feedback coil

I hope we have now something to discuss and finally get better results with our TPUs.

Otto

[ronotte]

@Otto,

Thanks for summarizing dfro post. Anyway I've not clear one point:

when dfro speaks about the vertical coils (those with iron core and magnet on top) and perhaps also about the 4 input coils, I think he's referring to the 'Open TPU' not the standard 6" or 15" TPU as it seems that in the upmentioned units there are no vertical coils  (I may be wrong, who knows?).
Said observation is supported by the fact that the 3StackTPU dwg does show only one continuous input coil per ring (that we call Control Coil....NO vertical or other coils).
Again we know that SM made several TPU designs often using different criteria. So may be wrong mixing different designs.

Roberto

[otto]

Hello all,

@Roberto,

its a little ......I tried the 3 stack with 1 control coil for each collector and it works great. I also tried the 3 stack with 3 controls for each collector and the result was the same, I hope. So I dont think we have  to complicate. I will use 3 collectors and  for each collector 1 control coil "wound all around....." but I want to figure out the resonance frequency for each collector + his control coil.
We already know that the collectors are a few turns of lamp wire. How many turns? It depends on the resonance. It will be a f...g job to cut the lamp wire and get the resonance but it has to be done.

The drawing showes us only the princip of winding. If there would be shown the feedback coils (vertical coils) there would be a mess.

Now the next question is about the frequencies used in the 6" TPU. We already know the frequencies of the 15" TPU: 245kHz, 35kHz, 5kHz.

In my tests with the 3 stack TPU I saw only at 245kHz, as the highest frequency, building the well known kicks + little sine waves. Of course I had to mix this highest frequency with a lower one.

I will try this 3 frequencies in my newest 6" TPU. A resonance is needed, made with caps......like dfro describes. And not to forget to rise the PS voltage. Not anymore 24VDC but between 200 - 300V or higher?? Maybe in kilovolts.

This will be my first steps.

Otto

[ronotte]

@ Otto,

well, as always you are running in front of all us. I have not yet had the opportunity to run tests on the new unit not to mention the several possible configurations but I do agree with you that the simple 3Stack solution, at least at for the moment, seems the best. This make sense also in order to gain the additional knowledge necessary to manage these new 'input coils'.

Going with order I think that I will firstly make a complete set of measurements (inductance, resistance, stray-capacitance, etc), then I'll calculate the theoretical auto resonance of the various coil-sets and then the tank capacitances necessary to resonate the coils at said frequencies (past experiences lead me to consider that the 7th harmonic is indeed the correct one: so I'll tune the coils to 5 - 35 - 245KHz).

Only after that preliminary work I will run the new tests.

Roberto