Author Topic: Kapanadze Cousin - DALLY FREE ENERGY (Read 11805541 times)

Hoppy · « **Reply #90 on:** September 26, 2012, 10:09:54 PM »

Quote from: dorcky on September 26, 2012, 07:53:15 PM

Hoppy can you give more info about the Litz wire that you want to use?
Some picture or datasheet?

Thx!

Hi dorcky,

I have attached two photos. One shows the double 'E' core transformer with the Litz wire ends. The Litz is 8 strands of around 0.25mm. I recovered the wire from a surplus coil. The second photo shows my inverter, VCO and nano pulser.

Regards
Hoppy

Black_Bird · « **Reply #91 on:** September 26, 2012, 11:38:22 PM »

@verpies, @itsu

Actually the snubbing zener diodes should be above 2*VCC because there is an auto-transformer action in the primary: when one of the mosfets is cut-off and the other saturated, this side of the primary will induce a VCC voltage over the other side. That will add to the power supply voltage, totaling 2*VCC in the drain of the cut-off mosfet. So, snubbing Zener diodes should be a little above that.

verpies · « **Reply #92 on:** September 27, 2012, 02:35:17 AM »

Black_Bird is right. Thanks for pointing out the addition of the Vcc.
I made a mistake with the direction of the induced current in the open primary and after his comment I had realized that the flyback pulse created by opening the first MOSFET and the pulse created by energizing the other primary through closing the second MOSFET, have the same polarity.

I have edited the schematic in Reply #83 to still use the Zener diodes rated at slightly more than 1*Vcc.

This is a new and different schematic and Black_Bird's observation was applicable only to the old version.

Ð¡ÐµÑ€Ð³ÐµÐ¹ Ð’. · « **Reply #93 on:** September 27, 2012, 08:06:13 AM »

ÐŸÑ€Ð¸Ð²ÐµÑ‚ itsu

We on http://realstrannik.ru still waiting oscillograms and measurements which Dally have promised so we will see does this will be or not ??

About main oscillator on TL949. I think his frequency is not 4.6KHz. I don't know why you have chosen exactly that frequency when according to my calculations main oscillator frequency is somewhere between 10.89ÐšHz and 1.11 MHz (theoretically). In fact upper frequency depend only of production characteristics of IC494. Knowing Switch Power Supplies parameters i can tell you for some good PSU frequency is about 150KHz-300KHz and depend mainly from frequency characteristic of ferrite cores !!

I did some little modifications of Dalley schematic. You can drive main power transformer direct with power mosfets from TL494. If you want very high switching speed and sharp eadges of signals on gates of MOSFETs use some good driver like 4420 or rise voltage on TL494 on 30-40 Volts, increase value of 150om resistors on 470-680 and you will decrese time of charging source-gate capacitance Ciss. To avoid parasitic oscillations on gates put MOSFETs as possible as you can near the driving pins 9,10 of TL494 or put small ferrite beads near the gates. Resistor in series with gates also prevent parasitic oscillations but reduce switching times and must not be big values. Always shunt this resistor with good unipolar capacitor to improve switching speed, decrease equivalent input capacitance and sharpen eadges. It's important that all grounding be in one main point (use good wire mesh for main ground) and avoid long conducting wires!!

Don't use Zener diodes for snubber. Use 1-2nF/2KV capacitor in series with resistor from 47-100 om/ 5-10 Watts!!

About Nano Pulser read and study this articles:

1. AN IMPULSE GENERATOR FOR THE GROUND PENETRATING RADAR Vitaliy Prokhorenko
2. HIGH POWER SUBNANOSECOND GENERATOR FOR UWB RADAR Vitaliy P. Prokhorenko, Anatoliy A. Boryssenko
3. DRIFT STEP RECOVERY DEVICES UTILIZATION FOR ELECTROMAGNETIC PULSE RADIATION Vitaliy Prokhorenko, Volodymyr Ivashchuk, Sergiy Korsun

When you finish Nano Pulser you need to do some TDR (Time Domain Reflectometry) testing of your coax like on picture below. This is a job for 1GHz bandwithd Oscillograph or better. I am interesting how your OWON will fight with nano pulses !!

Ð£Ð´Ð°Ñ‡Ð¸ Ð²ÑÐµÑ… Ð±Ð»Ð°Ð³ !!

d3x0r · « **Reply #94 on:** September 27, 2012, 08:42:06 AM »

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

Ð¡ÐµÑ€Ð³ÐµÐ¹ Ð’. · « **Reply #95 on:** September 27, 2012, 09:03:52 AM »

Quote from: d3x0r on September 27, 2012, 08:42:06 AM

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 · « **Reply #96 on:** September 27, 2012, 09:07:03 AM »

Quote from: Ð¡ÐµÑ€Ð³ÐµÐ¹ Ð’. on September 27, 2012, 09:03:52 AM

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

Ð¡ÐµÑ€Ð³ÐµÐ¹ Ð’. · « **Reply #97 on:** September 27, 2012, 09:14:52 AM »

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 · « **Reply #98 on:** September 27, 2012, 10:37:00 AM »

Quote from: Ð¡ÐµÑ€Ð³ÐµÐ¹ Ð’. on September 27, 2012, 08:06:13 AM

Don't use Zener diodes for snubber.

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

Quote from: Ð¡ÐµÑ€Ð³ÐµÐ¹ Ð’. on September 27, 2012, 08:06:13 AM

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 · « **Reply #99 on:** September 27, 2012, 12:42:33 PM »

Ð¡ÐµÑ€Ð³ÐµÐ¹ 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

Hoppy · « **Reply #100 on:** September 27, 2012, 01:51:16 PM »

Quote from: Ð¡ÐµÑ€Ð³ÐµÐ¹ Ð’. on September 27, 2012, 08:06:13 AM

ÐŸÑ€Ð¸Ð²ÐµÑ‚ itsu

We on http://realstrannik.ru still waiting oscillograms and measurements which Dally have promised so we will see does this will be or not ??

About main oscillator on TL949. I think his frequency is not 4.6KHz. I don't know why you have chosen exactly that frequency when according to my calculations main oscillator frequency is somewhere between 10.89ÐšHz and 1.11 MHz (theoretically). In fact upper frequency depend only of production characteristics of IC494. Knowing Switch Power Supplies parameters i can tell you for some good PSU frequency is about 150KHz-300KHz and depend mainly from frequency characteristic of ferrite cores !!

I did some little modifications of Dalley schematic. You can drive main power transformer direct with power mosfets from TL494. If you want very high switching speed and sharp eadges of signals on gates of MOSFETs use some good driver like 4420 or rise voltage on TL494 on 30-40 Volts, increase value of 150om resistors on 470-680 and you will decrese time of charging source-gate capacitance Ciss. To avoid parasitic oscillations on gates put MOSFETs as possible as you can near the driving pins 9,10 of TL494 or put small ferrite beads near the gates. Resistor in series with gates also prevent parasitic oscillations but reduce switching times and must not be big values. Always shunt this resistor with good unipolar capacitor to improve switching speed, decrease equivalent input capacitance and sharpen eadges. It's important that all grounding be in one main point (use good wire mesh for main ground) and avoid long conducting wires!!

Don't use Zener diodes for snubber. Use 1-2nF/2KV capacitor in series with resistor from 47-100 om/ 5-10 Watts!!

About Nano Pulser read and study this articles:

1. AN IMPULSE GENERATOR FOR THE GROUND PENETRATING RADAR Vitaliy Prokhorenko
2. HIGH POWER SUBNANOSECOND GENERATOR FOR UWB RADAR Vitaliy P. Prokhorenko, Anatoliy A. Boryssenko
3. DRIFT STEP RECOVERY DEVICES UTILIZATION FOR ELECTROMAGNETIC PULSE RADIATION Vitaliy Prokhorenko, Volodymyr Ivashchuk, Sergiy Korsun

When you finish Nano Pulser you need to do some TDR (Time Domain Reflectometry) testing of your coax like on picture below. This is a job for 1GHz bandwithd Oscillograph or better. I am interesting how your OWON will fight with nano pulses !!

Ð£Ð´Ð°Ñ‡Ð¸ Ð²ÑÐµÑ… Ð±Ð»Ð°Ð³ !!

Ð¡ÐµÑ€Ð³ÐµÐ¹ Ð’,

Could you please provide a specification for the two rectifiers in series with the 1nF cap across the secondary winding of TR1?

Regards
hoppy

Vasiliy Buslaev · « **Reply #101 on:** September 27, 2012, 02:52:58 PM »

Hi all
it uses a rectifier diode in avalanche mode.
Diode type: KD203A

Translate:
Maximum Reverse Voltage - 420 volts
Maximum forward current - 10 A
Maximum recovery time - Unknown
Maximum reverse pulsed voltage - 600 volts
Maximum pulse direct current - 100 A
Maximum reverse current - 1.5 mA
Maximum forward voltage - 1 V (at a current of 10 amperes)
Operating Frequency - 1 kHz
Operating Temperature ...... -60 .... +125 degrees Celsius
Capacitance of diode - not shown

According to the book from which Dally learned information on the use of diodes in the avalanche mode, you can use many types of suitable diodes. I'm sure you can find a replacement.

Regards

Hoppy · « **Reply #102 on:** September 27, 2012, 03:43:19 PM »

Quote from: Vasiliy Buslaev on September 27, 2012, 02:52:58 PM

Hi all
it uses a rectifier diode in avalanche mode.
Diode type: KD203A

Translate:
Maximum Reverse Voltage - 420 volts
Maximum forward current - 10 A
Maximum recovery time - Unknown
Maximum reverse pulsed voltage - 600 volts
Maximum pulse direct current - 100 A
Maximum reverse current - 1.5 mA
Maximum forward voltage - 1 V (at a current of 10 amperes)
Operating Frequency - 1 kHz
Operating Temperature ...... -60 .... +125 degrees Celsius
Capacitance of diode - not shown

According to the book from which Dally learned information on the use of diodes in the avalanche mode, you can use many types of suitable diodes. I'm sure you can find a replacement.

Regards

Thanks Vasilly and welcome to the forum.

Regards
Hoppy

Vasiliy Buslaev · « **Reply #103 on:** September 27, 2012, 03:51:46 PM »

Quote from: Hoppy on September 27, 2012, 03:43:19 PM

Thanks Vasiliy and welcome to the forum.

Regards
Hoppy

Hi Hoppy and all
Thanks
Very pleased that this information may be useful to you.
However, I am very busy at work. But as far as possible I will take part in the forum.
This is a basic diagram of Dally

Transformer, which operates in the saturation mode, applied
ferrite ring type K7-4-2. The first element - the outer diameter = 7 mm.
inner diameter = 4 mm, thickness = 2 mm. Magnetic permeability = 3000 ..... 6000.

Regards

starcruiser · « **Reply #104 on:** September 27, 2012, 06:23:08 PM »

I would think the coax length would be chosen by looking at the wave length of the pulse width.

1nsec = 1Ghz

1/4 wave = 250mhz or 11.23" of coax

1/2 wave = 500mhz or 22.464" of coax

we could look at a harmonic but would probably want to consider an odd order harmonic, say the 3rd, 5th, or 7th (prime number ...) when driving the line and reduce the impulse frequency. I am not sure if we would need to sync this or not with the transmission line standing wave.

I am not saying this will work but is a starting point since the transmission line (coax) will probably need to be longer or shorter than the ideal length matched to the pulse width.

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Author Topic: Kapanadze Cousin - DALLY FREE ENERGY (Read 11805541 times)

Hoppy

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Black_Bird

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verpies

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Ð¡ÐµÑ€Ð³ÐµÐ¹ Ð’.

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d3x0r

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Ð¡ÐµÑ€Ð³ÐµÐ¹ Ð’.

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d3x0r

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Ð¡ÐµÑ€Ð³ÐµÐ¹ Ð’.

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itsu

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