Kapanadze Cousin - DALLY FREE ENERGY

[itsu]

Nick,

Are you still in the game with the grenade/yoke tests, then?

well, yes and no, i don't think there is something magic in the Ruslan setup especially without a good ground (which i do not have),
so i won't invest much time in it, but if i see some interesting items popping up like the PLL thing etc., i might want to experiment with that.
But i want to stay away from the kacher thingy.

Concerning the duty cycle, i think you are mixing up different things like the duty cycle of the TL494 PWM and the adjustable "on time" of the
kacher driver, which are different things.

Itsu

[itsu]

Hi JohnK1
Arduino seems a nice toy to experiment with. Thanks for reminding it. Personally, i am trying first to see the so called effect at the output and then to think about better solutions. In my case, i tune my devices as conico said. Tuning with load connected at the output and not changing it so to retain the frequency steady. I have a heater with 3 resistances of 500W each to play with.

Katcher with variable duty cycle is not a katcher anymore. It is the Allega's blue box where the secondary is connected to ground and not to the base of the transistor. In this situation, duty cycle varying capability is a good future for matching the width of primary's triggering pulse, to the width of secondary's resonant frequency cycle. This matching gives the higher output voltage. But don't forget Ruslan's first devices with his weak katcher's output.

At my last week's setup, i broke my grenade down to two parts. I connected ground between the second and third layer forming this way two coils in one. First two layers is my output coil, and the last 4 layers with a cap in parallel form a self oscillating coil like in Dally design. The problem that occurred is that my resonant frequency is now at 6Mhz sharp (shorter wavelength), way too high for my katcher to work. So i guess there is not any secret inter-connection to Ruslan's grenade as i had assumed of. Back to one and undivided grenade again!

Jeg,

what about setting your kacher to 1/4 or 1/3 of that 6MHz?

Itsu

[Jeg]

Jeg,

what about setting your kacher to 1/4 or 1/3 of that 6MHz?

Itsu

I tried it my friend. With my fg connected the way we had discussed again (red to katcher's antenna, black to grenade's ground), any sub harmonic frequency lower than this, is more than attenuated compare to 6MHz.

[Jeg]

Guys i can not find a proper mosfet driver for finishing my blue box construction. UCC27321 is very rear for me to find in my location. It is not easy to find other mosfet driver with TTL-/CMOS-Compatible Inputs Independent of DC/DC Converters Supply Voltage. I had used mcp1407 which is also ttl cmos input compatible, but NOT independent of supply voltage. Its dc pwr voltage input, has to be the same level with the driving pulse. If driving pulse is at 5v and mcp1407 is driven with 12V then there is a rising internal heat which apparently leads to component damage. Is there any idea for other driver? Do you find it a good idea to drive 74ch132 output to a transistor for making it at 12V?

http://www.ti.com/lit/ds/symlink/ucc37321.pdf

[verpies]

Well, Itsu, that driver looks great. I hope that it does what is expected of it.
Are you still in the game with the grenade/yoke tests, then?

Speaking for myself I am just doing a community service, but if I saw one unexplainable pulse or anomalous power measurement , then I would be all over it.
I guess Itsu and others would be, too.

Why would I want a variable duty cycle?  Why not. Both on the Kacher circuit as well as the induction circuit.  Is that so complicated? Geo has it... 

Manual duty cycle adjustment is not complicated as you can see from this schematic.  Automatic adjustment is not that much complicated, either.

Duty cycle affects your output amplitude the most as it governs how quickly energy is transferred to the output (LC circuit).
Too high duty cycle and too wide pulses can allow the current to ramp up too high in an inductor and damage your transistors or saturate your core, so limiting it is a safety issue too (SOA).

The duty cycle also changes the spectral components of your output signal.  Narrower pulses give you wider spectrum and vice versa.