Steven Mark`s TPU

[EMdevices]

I wound a 9 turns collector with lamp wire. Dimensions well known: inner diameter 4", outer diameter 6".

I looked at my coil and got an idea: why not try to pulse just 1 strand of my lamp wire and on the other strand to connect a 100W bulb. So I did it.

On 1 strand the pulses and the +12V from the power supply and on the other strand a bulb and in paralel a 47nF/1kV capacitor. Without any control coils!!

I used just 1 frequency. The highest frequency range from my oscillator = 100 - 300kHz.

At the frequency of 245kHz I had a "success". I saw little sinuses forming from the kicks and then I saw the voltage/current rising. Of course, the light was getting better and better. A just little move of my frequency and the voltage rised to 40 - 60V and the current to 2 - 4A. At this values the bulb lighted at 100W. I also had a vibration of the signals on my scope at 5 - 10 Hz.

Congratulations Otto, I like the 5-10 Hz vibrations.Ã, 
It sounds like you don't even use the main collector wire, but only the two strands of the speaker cable.Ã,  keep up the good work.

EM

P.S.  I have an idea how you connected it based on your description, however if you can draw something up it would be great.

[Earl]

I wound a 9 turns collector with lamp wire. Dimensions well known: inner diameter 4", outer diameter 6".

I looked at my coil and got an idea: why not try to pulse just 1 strand of my lamp wire and on the other strand to connect a 100W bulb. So I did it.

On 1 strand the pulses and the +12V from the power supply and on the other strand a bulb and in paralel a 47nF/1kV capacitor. Without any control coils!!

I used just 1 frequency. The highest frequency range from my oscillator = 100 - 300kHz.

At the frequency of 245kHz I had a "success". I saw little sinuses forming from the kicks and then I saw the voltage/current rising. Of course, the light was getting better and better. A just little move of my frequency and the voltage rised to 40 - 60V and the current to 2 - 4A. At this values the bulb lighted at 100W. I also had a vibration of the signals on my scope at 5 - 10 Hz.

Then, yesterday I builded another 9 turn coil, the same as described and connected this 2 coils together.
As I have only 2 MOSFETs (others blown), I pulsed 1 coil with 1 frequency (range 1 - 10kHz) and the other coil with the frequency range 10 - 100kHz.

At some point I got the same "success". This time only the current rised to an unknown level but the voltage was stable = 12V. I didnt had the well known vibration of 5 - 10 Hz this time.

Otto,

is this what you are doing?

[EMdevices]

thanks for the diagram Earl,Ã,  I just re-read otto's posting and I see what he is saying now.

Here's my interpretation.Ã,  I previously thought he was putting the speaker wire around the collector, but that's not correct, the speaker wire is the collector. (and there are no control coils)

EM

[hartiberlin]

Hi EM,
seems to be right drawn your circuit.

It seems Otto is using some kind of parallel wire coils resonanz transformer.

Otto, you can save your MOSFETs if you use a cap in parallel with the
coil you are driving with your MOSFET or use a freewheel diode in parallel
with the drive coil...
Just don?t let the spikes come back to your MOSFETs...

Otto, do you now have a videocam or a digital camera, so you could
at least post a few pictures or a video ?

What was your input power from your power supply,
when the 100 Watt bulb was running ?

Regards, Stefan.

[EMdevices]

Stefan,Ã,  

he mentionsÃ,  40 -60 Volts andÃ,  2-4 Amps.

So worst case would be 60 x 4 = 240 watts

and the lowest value would beÃ,  40 x 2 = 80 watts

So it's between 240 and 80 watts.

I doubt it's OU, but it's something on the right path.  What intrigues me is why does the voltage supply rise and the current increase.  doesn't the supply have controls to limit current if the voltage rises?  I don't own a fancy power supply so I can't answer those questions.

EM