Kapanadze Cousin - DALLY FREE ENERGY

[Сергей В.]

The 4.6Khz frequency is probably an artifact of the toroid he used... I'm seeing a much higher frequency  - 500khz easy.....

My toroid rang for a while, but after connecting more load and tuning for highest output to +150 supply, it's quiet.


My 13009 drivers on primaries of toroid get VERY hot

There exist optimal driving power for output transformer and must be calculated according to specifications we need. Parameters of ferrite core, input and output voltage, current (RMS power), and so frequency must be know for some math.calc. Overdriving or underfriving is undesirable. If your transformer is overloaded than for sure your timing is wrong or your transformer did not adequate made !!

Try this, double transistors (make 2 it parallel) but put small resistors about 10 om in each base or better use some powefull transistors or mosfets !!

First try to make and adjust Nano Pulser. Without him it's impossible to make this device !! It's also important to find proper coax lenght and this must be done experimentally!!
You can use own made spark gap, best one is vacum type spark gap but i have suspect about their applicability in Dally device !!

I wish you luck !!

[d3x0r]

There exist optimal driving power for output transformers and must be calculated according specifications we need. Parameters of ferrite core, input and output power and frequency must be know for some math.calc. Overdriving or underfriving is undesirable. If your transformer is overloaded than for sure your timing is wrong or your transformer did not adequate made !!

Try this double transistors (make 2 it parallel) but put small resistors about 10 om in each base or better use some powefull transistors or mosfets !!

First try to make and adjust Nano Pulser. Without him it's impossible to make this device !! It's also important to find proper coax lenght and this must be done experimentally!!
You can use own made spark gap, best one is vacum type spark gap but i have suspect about their applicability in Dally device !!

I wish you luck !!

I was just going for a direct replication; the e13009 is 250v 12A not powerful enough?
My power supply is only giving 0.77A at 12V

[Сергей В.]

Yes it's ok !! Like in Dally replication !! Put them on good radiator to decrese thermal resistance !!  Also try different Duty-Cycles ratio and pump the frequency up !! If this can't help you need to make new toroid transformer !!

Always check Dally blog. Maybe he will put Oscillograms and measurements and make our job very easy!! If not, never mind, we need to do it on own way !!
http://www.liveinternet.ru/users/edward_lee

[verpies]

Don't use Zener diodes for snubber.

Why not?
Itsu was blowing Zeners because I made a mistake - not because they didn't work.

Use 1-2nF/2KV capacitor in series with resistor from 47-100 om/ 5-10 Watts!!

Anything across the primary windings will supress the spikes, but what you are proposing will create an LCR tank!
This LCR circuit will oscillate and it will be hard to predict at what frequency since each transformer has a different primary inductance (L).
Also the MOSFETs will have to work harder to charge and discharge the capacitor if the LCR circuit does not happen to resonate exactly at their switching frequency.

This is in contrast to the Zener+Shottky snubbers, which work with any transformer (regardless of its primary inductance) and do not present any additional load to the driving MOSFETs.
See the attached schematic.

[itsu]

Сергей Ð'.,

i have chosen 4.6Khz as this was clearly heard in the Dally video's and seen on the audio measurements on the Russian Forum which now is cleaned out apparently.

My transformer also sings at 4.6Khz as i drive it with this frequency.
For me it has no use to run L1 coil on whatever high frequency as the L2 coil is tuned to resonate around 4.6Khz
For me the best result will be when L1 coil is being driven on the same frequency that the L2 coil is tuned to.

Hopefully my next tests would bring some clarity.

Thanks for all your info.

Regards Itsu