Kapanadze Cousin - DALLY FREE ENERGY

[itsu]

   Dog, the earlier Ruslan videos were showing a regular sine wave signal from the Kacher circuit, nothing out of the ordinary.
And the device still would self run.
    I'm trying to replicate THAT effect, if possible.   

  Itsu:  You mentioned that the Kacher can not be controlled by a TL494 circuit, or a PWM. 
Would that still the be case if just using a PWM (simple 555 circuit), onto the Kacher?
  It's interesting what Geo mentioned, that if he raises the duty cycle over 30%, it stops oscillating. 
At least that's how I understand it. 
  Maybe that's why I don't get any interaction, when using 100% duty cycle.  Or not?
  Shortening the duty cycle reshapes the wave form, to produce a higher more pointed peak.  Right?

Nick,

A kachers frequency is determined by its secondary coil inductance/capacitance.
You can decrease the inductance by some ferrite inside the secondary or to add some external capacitance, but not by:
"using a PWM (simple 555 circuit), onto the Kacher"    whatever that means.

Perhaps you can drive the kacher transistor with a PWM, but it still will only effectively oscillate at its secondary coil natural frequency with the risk to destroy the PWM.

Concerning the 30% duty cycle, i am lost, what duty cycle, from what?
I have scanned back through Geo's posts, but do not see any reference to a duty cycle used on the kacher.

The latest Ruslan circuits (Oleg) is pulsing the Kacher on/off at a certain rate, is that what you (Geo) mean?
The pulsing duty cycle is very low, i guess something like 0.05% on or so.

Itsu

[John.K1]

Nick,

A kachers frequency is determined by its secondary coil inductance/capacitance.
You can decrease the inductance by some ferrite inside the secondary or to add some external capacitance, but not by:
"using a PWM (simple 555 circuit), onto the Kacher"    whatever that means.

Perhaps you can drive the kacher transistor with a PWM, but it still will only effectively oscillate at its secondary coil natural frequency with the risk to destroy the PWM.

Concerning the 30% duty cycle, i am lost, what duty cycle, from what?
I have scanned back through Geo's posts, but do not see any reference to a duty cycle used on the kacher.

The latest Ruslan circuits (Oleg) is pulsing the Kacher on/off at a certain rate, is that what you (Geo) mean?
The pulsing duty cycle is very low, i guess something like 0.05% on or so.

Itsu

Hi Itsu.

I actually have similar idea as Nick.  I want to try to pulse Flyback connected to tesla coil. Flyback has frequency in KHz as the current LC loop. And will excite the Tesla coil which has MHz . Theoretically (but probably not) I might see train of pulses? May be Flyback can get damaged ? May be I should take care about the impedance and all will be fine?  I am in the process of reworking of complete coil. Making it much bigger (bigger diameters of wires) also Tesla is now from 0.7 mm heavily insulated wire. (120 turns) Tomorrow I start print the holding structure a before the weekend I might be back to experiment.

That low duty cycle is probably related to unipolars.    Does anybody know how to reduce duty cycle "externally" ?   I have SG with only 1% step. I need to be able to tune by 0.1% and not to buy new SG. 

Dog-Dog - How is it with the Push-Pull. Did we made a deal or not?  Not sure now.

Starcruiser - Yes I was thinking about it too, but as I said I fail to get any effect out of it. It can change with my new build.  I still keep it in my mind    

[verpies]

I did a quick calculation for "Fundamental" frequency for the length of 37m for sound in copper and sound in the air   (4760 vs. 343.3)  and I end up  with the common frequency 22.082KHz.

The acoustic fundamental standing wave frequency in copper might be significant, but why would you like to relate it to the standing wave frequency in air?

[NickZ]

Nick,

A kachers frequency is determined by its secondary coil inductance/capacitance.
You can decrease the inductance by some ferrite inside the secondary or to add some external capacitance, but not by:
"using a PWM (simple 555 circuit), onto the Kacher"    whatever that means.

Perhaps you can drive the kacher transistor with a PWM, but it still will only effectively oscillate at its secondary coil natural frequency with the risk to destroy the PWM.

Concerning the 30% duty cycle, i am lost, what duty cycle, from what?
I have scanned back through Geo's posts, but do not see any reference to a duty cycle used on the kacher.

The latest Ruslan circuits (Oleg) is pulsing the Kacher on/off at a certain rate, is that what you (Geo) mean?
The pulsing duty cycle is very low, i guess something like 0.05% on or so.

Itsu

   Yes, the video showing how the wave form narrows, and compresses into a wave form obtaining a much higher peak, compared to when that same wave is spread out.

   Maybe Geo can explain about the duty cycle causing his induction circuit to stop oscillating, if it goes over 30%.
And his best output is found at around 15 to 20%.  Something like that.
   EDIT:  Minute (2):  https://www.youtube.com/watch?v=J7NDATgOJxE

   Seams that the latest finding by Ruslan is that,  the duty cycle on his HV circuit, is also an important consideration.
If I understood him.

   I do get confused about which duty cycle, to what circuit,  at times.  No doubt.

   Just still looking for a cheap commercial approach to all the drivers.  Or,  a one board fix for all.

[verpies]

Does anybody know how to reduce duty cycle "externally" ?    

What frequency and waveform shape?