Guys:
   Is there some reason that we need to build a TL 494 circuit board ourselves?  Can't a ready made controller board be purchased such as the one below, or something similar, to control the frequency and duty cycle of push-pull/grenade generator circuit?  And, also, a ready made adjustable Kacher circuit board, as well?

  http://www.ebay.com/itm/TL494-KA7500-DC-9V-25V-Driver-Board-DC-DC-Converter-Inverter-Boost-Module-PWM-/181449170972?pt=LH_DefaultDomain_0&hash=item2a3f36a01c

Hi Nick

Yes, a ready made controller like the one in the link is decent.  I purchased one a couple of years ago to build a push-pull inverter for another project(High voltage variable voltage supply).  It was actually a UC3525SG chip, similar in function to the TL494CN as both can be used for push-pull configurations.
The pics show :
UC3525SG attached to hand made motherboard for interfacing to the MOSFET bridge:
Back of UC3525SG card with modifications made to interface with motherboard:
MOSFET bridge of same project:
Push-Pull transformer with regenerative snubbing capacitors/diodes:

You will need to *reverse engineer* some of the interfacing connections as the actual schematics for the board are NOT included from the seller.

take care, peace
lost_br0

  That's the idea, it's just a matter of finding the right ready made controller circuit, for the type of push-pull driver we are using. In my case I'm still the using the modified Mazilli circuit, for now, but, I wouldn't mind trying out one of these commercially made pulse modulators, to connect to the Mazilli crt.
  I just can't see spending the time to make what can already be purchase for a few bucks. Some of these sell for very low price. I can't do a better job, or for less money, than what these modulator boards cost.
If they can be put to work for our tests.
  Common guys, give your opinions.

Hi NickZ

I will add one more comment:
The Mazilli circuit is a resonant topology which incorporates ZVS as a necessary characteristic.
The TL494 and SG3525 pcbs control boards as sold on Ebay, etc; are NOT a resonant topology, NOR do they perform ZVS.

That being said, they are different animals......

It really depends on the application and the amount time one wants to spend to *adapt* one of these boards to the project at hand.

It can be done, but for example looking at the link you posted, the TL494 control board on ebay has a fix frequency.  So to start with one must de-solder the SMD resistors, drill holes and install a trimmer resistor just  to get adjustable frequency.

On the other hand, it's the best way learn....*reverse engineering*

take care, peace
lost_bro

hi Geofusion,

Latest update related to my experiment to obtain 1 wire current flow to Earth(Myth to Reality v2.0)-

The 2nd part i will show everyone the Tesla link which describe the effect we were getting using digital Amp or Clamp meter on 1 wire to Earth using pulse or via spark gap.

I have obtained 1.5Amps current flow to Earth merely using 1 wire.
This time i have intentionally increase maximum repetition frequency for my nanosecond generator from 100khz(0.9 Amps to Earth) to 700khz(1.5Amps to Earth).
I did have not design  this circuit board for use with APT10035 hence i did not install a heat sink yet.

The screenshot which show my nanosecond generator with the scope probe connected do not produce high current reading to earth since my scope is not isolated from the electrical earth.


Since i have accidentally destroyed 2 3Amps sk surface mount diodes on both my voltage booster circuit i am forced to stick with 12volts battery for time being.
The maximum frequency achieved at 12volts is 700khz for my IXDD614 driver in the nanosecond generator circuit.Take note the output voltage is mere  200...300volts using 12volts 0.7Amps.


1.5Amps to Earth-
Mica capacitor is mere 10pf 500volts which is connected to nanosecond generator output to digital meter at 10Amp setting then other end of meter to earth-water pipe.

For those whom are knowledgeable the nanosecond pulse is able penetrate the dielectric layer which for example can be mica or even air capacitor(Huge winding over multilayer coil)

I have attached screenshot-

----------------------------------------------------------------------------------------------------------------------------------------------------------------
Part 2-Nikola Tesla free energy: unraveling Greatest Secret(Device to Harness Free Cosmic Energy Claimed by Nikola Tesla)

http://www.nuenergy.org/nikola-tesla-radiant-energy-system/

For the inexperienced the content in the above link would hardly make much sense related to what Geofusion and myself have achieved which is related to 1 wire current flow to Earth.

Condense version of what i have spotted base on the above link which makes sense related to what i have achieved  recently.

The Earth’s Electrostatic Charge-The earth has a charge of 96,500 coulombs. With a potential of 360,000 volts, the earth constitutes a capacitor of .25 farads (farads = coulombs/volts). If the formula for calculating the energy stored in a capacitor (E =1/2CV2) is applied to the earth, it turns out that the ambient medium contains 1.6 x 1011 joules or 4.5 megawatt-hours of electrical energy.
In order to utilize this high-voltage energy you must do two things — make an energy sink and then devise a way of making the “sink” oscillate.

Zero Point Energy-Do read up the paragraph
------------------------------
New strategy -I will need to find a simple way to breakdown the air dielectric layer between the high voltage which is present at the antenna and the multilayer coil which is connected to Earth.

My last kapanadze experiment using the coaxial which was loosely wound over multilayer coil without kacher  and by connecting 1 output from nanosecond generator which create alot of interference in my PLL pwm circuit.
The positive outcome was there is current flow  <0.5Amps to the earth.

Without nanosecond generator activated-
Using 0.47uf x 2 in parallel the maximum voltage i got on my not true RMS meter was 259volts A/C.This only after i placed 0.1uf x 2 in parallel across 220volts 60watt bulb.

The circuit is inefficient since it's running at around 14.8khz for a Air core.

I am gonna follow Akula's advise base on old MenofFather Russian translation not to go lower  than 18khz.At 1 x 0.47uf the frequency i got is around 22khz  but the output is mere 190volts A/C.

    Mag:
   I'm still wondering if the amps to ground readings are really accurate. For example, what can that current actually do?
Will it light a bulb?

   Here (below) is another pulse modulator circuit. Can this be connected to a Mazilli driver for the grenade/yoke adjustments of frequency and duty cycle? It can work with push-pull Induction Heater circuits, like the Mazilli, and there are several different units available. But, they are more expensive, and not TL 494 based, like the ones from China.
  What do you think?

   http://www.rmcybernetics.com/shop/PWM-OCm

   I've also been thinking of buying this USB 20mhz scope with the 100x probe, for $100. Link below.
It also has AC coupling which some other scopes of this type don't have.
It should work with XP,  I hope, but I'd rather have one that can connect to my 10 inch tablet, instead.
  Any advice is welcome. 
 
  http://www.amazon.com/SainSmart-Portable-Handheld-Oscilloscope-Bandwidth/dp/B00FYGEFYM/ref=pd_sbs_indust_1?ie=UTF8&refRID=1NTTCV9P946JQTFYYW9K

  I'm still wondering if the amps to ground readings are really accurate. For example, what can that current actually do?
Will it light a bulb?

Yes, its real current but the ability of a digital meter to read this current accurately is questionable.

  Hoppy:
  Nor do analog meters.  Although they can be used at times, but I didn't know that you can't connect the digital meter to a strong current for a reading of more than 15 seconds.  I'm on my third meter now.

  Hoppy, please check the EDIT to my previous post, concerning scopes and pulse modulator circuit boards.

   Lost bro:  Looking forward to your video showing the ground connection lighting a 100 watt bulb. 

  Hoppy:
  The shipping cost are prohibitive on bringing an analog 20mhz bench top scope, so I've chosen to look for an USB alternative, and to order a 100x probe for it as well. Total cost is less than $100. Hopefully the 100x prove will not affect my pc, laptop, or tablet, from too high a voltage. But, I'll get a regular analog scope, if I can find one here, at a good price.
 
  As I found the modulator circuits listed on the Induction Heater (Mazilli circuit), I'm still wondering WHY the linked PWM units can't be connected to a Mazilli, to control it's duty cycle, and frequency. Please explain.

  I don't think that anyone has actually replicated the second Akula device circuit to the tee, nor Ruslan's version of it, that I can see.  And my modified Mazilli crt seems to have as much or more output than most of the Akula/Ruslan replications I've see to date.  the main thing for me, is that it can light my house,  but, then so can an equivalent 12v to 110v inverter.
  I am still looking for the magic frequencies... and I need a scope now, to further tune with.
Thanks for the help.