Successful TPU-ECD replication !

[hartiberlin]

I would have expected a 3 level staircase with the same amplitude for the input square waves. 1 high, 2 and 3 in the middle, and 1 low. I checked the output from the mosfet drivers and the square waves from the drivers are the same amplitude...

Strange, how did you mix these 2 waveforms ?
Added them up via resistors or how ?

[hartiberlin]

I have to say I'm looking forward to replicating this device. Drivers will be here tomorrow morning !!

These are some of the tests I have in mind:

1. Once I have the two frequency lighting of the bulb. What happens if I gradually reduce the supply voltage ? Is there a sudden cut-off point where the bulb turns off or does it reduce brightness gradually ?

2. What happens if I disconnect one, or other, or both of the mobius coils ?

3. What happens if I disconnect one of the control coils ?

4. What happens if I switch in one or more bulbs in series ?

5. What happens if I switch in one or more bulbs in parallel ?

I hope Jason, Otto or Roberto can answer this.
Any maybe soon Giantkiller with his new setup.

[gyulasun]

sorry, I was mistaken.

[otto]

Hello,

@Bob.rennips

1.if my memory is ok, I can say that when you reduce the supply voltage the light is reduced. But dont worry about the power supply. When you hit the right frequency mix, the voltage from the power supply will be at 12V if you started with this voltage.

2.By disconnecting one strand you will see that there is less power and this means that your bulb is not so nice shining.

3. By disconnecting 2 strands look at point 2.

4. When you add more bulbs the power is halfed in this moment. NO;NO; dont worry!!!I already sayd that my controls are not sooo good. This is my first job. Better controls.
In the final version, when the controls are ok, then you can connect another bulb and the instruments cant "see" an additional load. I made this already but lost it because my oscillators are also not good.

Bulbs in a series connection I never tried.

Otto

[z_p_e]

Hello all,

it should be clear that my setup is MY favorit in this moment. SM told us that there are a lot of ways to built a good TPU. So, in a very short time, I suppose, there will be TPUs like the open one with the controlls wound all over the collector and a few other types.

I only wanted to give the basic setup that I have. Its on you to find other possibilities to built a good TPU.

Otto

Otto,

Bearing the above in mind, and the fact that you have built something and have seen some results, you must have an explanation or theory of operation for the device?

Have you or Roberto considered doing a writeup of the theory of operation for this device?

SM said that different configurations work, albeit, the final one was best. However, we can be certain that no matter what the configuration, the theory of operation, or basic concept is the same in all.

It would be interesting to read what the theory of operation or basic concept of your device is, as I have not seen this yet. Sorry if this has already been explained, but a formal writeup would be helpful to those building also, so they know what they are looking for.

I know you both are busy, this is only a suggestion.

Regards,
Darren