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Author Topic: Kapanadze Cousin - DALLY FREE ENERGY  (Read 11715989 times)

Hoppy

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Re: Kapanadze Cousin - DALLY FREE ENERGY
« Reply #1635 on: May 24, 2013, 10:49:34 PM »
Evening Hoppy.

How do you think a Zenner would stand up to crowbaring for the Ismael device? If you were able to bring up the voltage to just around the threshold of reverse it would conduct for a short period of time before going back to blocking as the sine wave decreased. Just a thought :)

Cheers Grum.

Evening Grum,

The problem with a zener is its dynamic resistance is far too high (according to Aviso), typically 10-15R, which is why Aviso is using paralleled IGBT's for extremely low drain / source resistance.

NickZ

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Re: Kapanadze Cousin - DALLY FREE ENERGY
« Reply #1636 on: May 24, 2013, 11:37:58 PM »
    Hoppy: 
   Thanks again.  Back to back diodes as you say, is one thing. Which I understand.
But front to front, (or facing diodes), could be bucking diodes, and not protecting, at all, and may be doing something completely different? Especially is they aren't zener types. 
   Anyway just thinking out loud.

verpies

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Re: Kapanadze Cousin - DALLY FREE ENERGY
« Reply #1637 on: May 25, 2013, 12:22:23 AM »
Back to back diodes as you say, is one thing. Which I understand.
But front to front, (or facing diodes), could be bucking diodes, and not protecting,
Series back-to-back, front-to-front, face-to-face and bucking diodes means the same thing.
Series back-to-front and front-to-back means something else.
« Last Edit: May 25, 2013, 10:10:17 AM by verpies »

verpies

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Re: Kapanadze Cousin - DALLY FREE ENERGY
« Reply #1638 on: May 25, 2013, 12:28:35 AM »
Back-to-back diodes don't conduct in either direction until their reverse breakdown voltage is exceeded.
Such connection of diodes is bidirectionally symmetric and behaves just like a varistor, but usually faster and at lower voltages.

Single diodes or back-to-front diodes conduct in one direction and when their collective reverse breakdown voltage is exceeded they also conduct in the other direction. 

TinselKoala

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Re: Kapanadze Cousin - DALLY FREE ENERGY
« Reply #1639 on: May 25, 2013, 12:54:30 AM »
Why?  The TL494 already has complementary outputs.
Yes, and it was very frustrating to not be able to use them. I wanted more symmetry and more current than each complementary output could supply, so I fed one output to the 2n7000s to split that signal and invert one of them, then on to the bipolar H bridge. I'm operating the 494 well above its rated frequency range, and I think that accounts for the asymmetry of the chip's own outputs.
Quote
Does that bridge have a better performance than integrated MOSFET gate driver (e.g.: UCC27511) ?
Probably not "technically" but it's a lot more robust, and easier to change parts. Instead of replacing the whole driver chip I can just replace the failed transistor, etc. So in that sense the performance is better.... But the "hot setup", after all the problems are sorted, would do away with the 494 and the bipolar bridge, and use a CMOS pickup to drive the gate driver chips directly.
Quote

Cool.  Is that antenna difficult to tune ?
Not at all. I didn't label it in the photo but it's the chip and LEDs at the bottom right of the osc board. The antenna is about 3 inches of bare wire, just plugged into one of the gate inputs. The output of that gate is run thru a couple other gates in the same chip to drive the LED and to clean it up for the alternate drive into the splitter/inverter stage. Sometimes you need to touch the antenna with a finger to get the thing to start.
Quote

...and what are the dimensions of the secondary winding?
I think I used around 700 turns of #33 Kynar-insulated wire-wrap wire on a short fat Bakelite form, and two chrome baby-moon hubcaps for the top capacity.

MenofFather

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Re: Kapanadze Cousin - DALLY FREE ENERGY
« Reply #1640 on: May 25, 2013, 09:54:32 AM »
    MenofFather:
   Might be a zener diode, but might not be, also. Why are they facing towards each other? Is this really a common way to protect the Fets?  I don't use Fets, so I don't know...  As they can easily fry out, especially when allowing  them to get the high current back emf pulses 1:10 to deal with, as Ismael is mentioning. They are fast switching, but are also weak. Seams to me that special high current and high voltage diodes are what is needed.  No?
I not use zener face to face, but maybe that better protection than only one zener diode. Akula made very much protection, very good protection, but I use only one zener diode for protection, he protect not only gate, but source and drain probarly.
"  Is this really a common way to protect the Fets?" I see scematic on kacher on mosfet in it also is zener diodes face to face.  So it maybe common protection for mosfets.
" Seams to me that special high current and high voltage diodes are what is needed.  No?" There you need it put? Смотря где ставить.

Hoppy

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Re: Kapanadze Cousin - DALLY FREE ENERGY
« Reply #1641 on: May 25, 2013, 09:56:48 AM »
    Hoppy: 
   Thanks again.  Back to back diodes as you say, is one thing. Which I understand.
But front to front, (or facing diodes), could be bucking diodes, and not protecting, at all, and may be doing something completely different? Especially is they aren't zener types. 
   Anyway just thinking out loud.

Nick

See this data sheet which shows the component symbols as connected back-to-back.

MenofFather

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Re: Kapanadze Cousin - DALLY FREE ENERGY
« Reply #1642 on: May 25, 2013, 09:58:49 AM »
 
  But, if the guy had a self runner, that is unusual. And, that it's not easy to find the right frequency, is also becoming more known each day, which is not making it any easier to obtain the needed results.
If you want I can put schematic and videos of this divice.

MenofFather

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Re: Kapanadze Cousin - DALLY FREE ENERGY
« Reply #1643 on: May 25, 2013, 10:11:28 AM »
In one my experiment, seems something be wrong and zener diode for protection mosfets makes very hod and then break to two parts. So I recomendate use very stron zener diodes for very good protection let say, or 2-5 zener diodes not that stron in parallel. But if you not made mistakes in schematic then normal zener diodes protects mosfet.

anandml

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Re: Kapanadze Cousin - DALLY FREE ENERGY
« Reply #1644 on: May 25, 2013, 10:21:57 AM »
I think rectified 220v from the inverter is connected to the TL 494 pin no 1 or 16 with the help of resisitor and LC filter. Please correct me if i am wrong. If tl494 control the pulse witdth to the MOSFET according to the feedback from the inverter output? As the load increased on inverter ac side the voltages decrease but tl494 sense it and increase the dutycycle...
 

verpies

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Re: Kapanadze Cousin - DALLY FREE ENERGY
« Reply #1645 on: May 25, 2013, 11:25:41 AM »
Here is an example how a big helical coil spiked with high-voltage pulses, influences a nearby 50Hz inverter, which is powered by a two-transistor driver (on two black heat sinks), connected to the primary of a low-voltage transformer (in the video this driver+transformer is called an "inverter").

The author says that the big helical coil and the green transformer are separated from each other.
The two wires (red & black) going to the low voltage section of the 50Hz inverter/transformer are supposed to carry only the 12V DC from the battery.

Maybe the HV section with the helical coil directly influences the 50Hz transformer in the low voltage section or maybe it interferes with the 50Hz driver/inverter circuitry indirectly (through EMI conducted by the 12V DC supply wires or air). 
Decide for yourself.

http://www.youtube.com/watch?v=7jtjgAwXqGg
« Last Edit: May 25, 2013, 02:27:52 PM by verpies »

TinselKoala

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Re: Kapanadze Cousin - DALLY FREE ENERGY
« Reply #1646 on: May 25, 2013, 02:36:23 PM »
@verpies:
Yes, the two oscillating systems will influence each other, both thru the EM coupling and also thru the mutual power supply. The brightening and dimming of the bulb could be caused by the system shifting into and out of a truly resonant coupled oscillation mode. I call this "supernova mode"... actually I think it was someone else here who first called it that....

http://www.youtube.com/watch?v=LaVmTeaU4Io

BTW, the bulbs shine much more brightly than they would if they were simply hooked up directly to that same battery.

verpies

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Re: Kapanadze Cousin - DALLY FREE ENERGY
« Reply #1647 on: May 25, 2013, 02:58:26 PM »
How does the output of your oscillator/driver change in the Supernova mode ?

T-1000

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Re: Kapanadze Cousin - DALLY FREE ENERGY
« Reply #1648 on: May 25, 2013, 03:56:31 PM »
@verpies:
Yes, the two oscillating systems will influence each other, both thru the EM coupling and also thru the mutual power supply. The brightening and dimming of the bulb could be caused by the system shifting into and out of a truly resonant coupled oscillation mode. I call this "supernova mode"... actually I think it was someone else here who first called it that....

http://www.youtube.com/watch?v=LaVmTeaU4Io

BTW, the bulbs shine much more brightly than they would if they were simply hooked up directly to that same battery.
To understand better what is happening you might relate Gary Magnetic Effect -  http://www.youtube.com/watch?v=n3f8v9bjx7g  to your experiment.

Cheers!

NickZ

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Re: Kapanadze Cousin - DALLY FREE ENERGY
« Reply #1649 on: May 25, 2013, 04:36:36 PM »
  What Tinsel has called the "super nova" state, is what I'm experiencing when my system gets much brighter, and the amps being drawn also go up. I think that the bulbs can get even brighter than with the grid source, but also burn out the filament in the small bulbs, after a long running.  I just burnt out my last 7 watt indicator bulb, for no other reason. Even my neon bulbs will start to carbon up inside, after while, and not that long a while, either.
  What causes this I attribute to a different resonant state. As it also causes a higher draw from the battery or wall adapters, while it lights the bulbs much brighter. The brighter light is nice, but not at the expense of a much higher draw. Maybe we'll find a way to have the brighter light and keep the draw down also, I think this is also possible, but again, not easy to do.  Otherwise, it's no free lunch.

  One more thing. I think that it is better to test the circuits using the biggest bulbs possible, as the small bulbs will restrict the output flow to their own limited capacity. So, a 200 to 1000 watt bulb would be good to try, once you get the system working.

  Menof:  I don't know what to say about the zeners working back to back, or front to front, or piggy backed, as I use a transistor for now, without anything else.  I do have some of the 460 Fets that are being uses by Akula, or at least some of the diagrams. I have been avoiding their use as it they need a driver, I thought, but after seeing what Woopy is showing using only one of them, I may try them later. But, if Akula is using the diodes in that way, I would think there is a good reason for it. Yes, looks like he has a lot of fet protection going on, as he has over 1000 watts of juice flowing in his secondary part of the system. It may also be why his system is "unstable" or overheating, due to the same reason that Ismael mentioned about the higher spikes, burning things out. Spending $200.000 for a better IGBT, is something more than most of us can do.