Kapanadze Cousin - DALLY FREE ENERGY

[xhacks]

As you see the output is higher than input

[NickZ]

  Guys;
  Thanks for your replies.
   The only thing that I don't have correct on my Mazilli as compared to the schematic, are the two crossover diodes. They should be the UF series, but I'm running the IN4007 or the IN4007, as in Geo's diagram. So, these smaller diodes may not be switching fast enough, and thus may be causing the fets to heat, by just running on just one or the other fet, instead of both. As the fets are NEVER running both at the same temp. Either one, or the other is always heating up. This may be the problem. I'll switch the IN series diodes to the UF 306 that I'm currently using on the feed back loop, instead, and see what that does.
  If I run the Mazilli using the 12v, 10Ah battery charger, the fets do run cooler, as can be expected, but the light output from the bulbs is much lower, as well. This is probably due to the circuit drawing more than 10 amps from the supply battery, as compared to the fixed input source being drawn from the car battery charger  source.
  I'll switch the diodes, and report back.  As the future plan is to draw 24v from the self running circuit, IF I can finally get it to self run, which is really what I have in mind. 

[magpwr]

As you see the output is higher than input

I tried with the the same igbt with the D extension (Inbuilt diode)as found in multisim.
The output is about same but little higher input current needed.
Strangely no other components in multisim be it mosfet or igbt comes close enough.


I managed to find and purchase 10 x  IRGC4BC10UDPBF from ebay also sold in digikey and mouser as well.
To be on the safe side i also noticed the igbt used by Akula device have also a 200khz mentioned in datasheet and avoid unecessary delay i purchased  10 x FGH50N6S2 (No inbuilt diode) as well.

Since there isn't a suitable transformer to the job in multisim which i have tested although some came close because it was like 25:1 ratio or 100:1(Input 800volts to get 8volts haha. not really great).

I am sure if we wind a transformer say 20 turns secondary(2.5mm sq) and 5...6 turns then center tap then 5...6 turns.The toroid would need to be large enough to handle at least 5Amps.
My 3 inch green toroid base on old experiment with 1000watt halogen was sufficient.But that was using mazilli which is not suitable for this experiment.
PWM I/C:3525 or TL494 to provide the signal to the 2 igbt via a driver i/c:TC4422 or TC4421 which need to be powered by a voltage boost circuit eg:MC34063 to generate 20volts(For igbt's which likes 15volts at least)  from 12volts easily.

In virtual it is important the signal to igbt is 20volts for optimal switching(Although datasheet mentioned 15 or 18volts) with low loss hence the same needs to be applied as described for actual experiment.

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To everyone else,

This is my latest update on Don smith China replication.

I have just completed the assembly of the Variable High voltage generator for the capacitor bank(450volts  270uf x 4 in series)  late night Sunday.
Too bad i got lack of time even today to do some final tweaking.Using 8 1200volts diodes to form 2400volts full bridge rectifier.

6 x CREE IGBT driver and  multi power supply for opto isolated 2 in 1 board design is also completed but am left with the pcb fabrication.

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Tips for the day never never start on any project eg:Any of Akula device until you get every single details figured out in the head or papers.

[starcruiser]

@magpwr,

Don't you think it would be wise to use heat sinks with the diodes? What is the current rating again? I would get a couple of heat sinks and mount the diodes, this would allow full current to the rated specs.

Carl

[magpwr]

@magpwr,

Don't you think it would be wise to use heat sinks with the diodes? What is the current rating again? I would get a couple of heat sinks and mount the diodes, this would allow full current to the rated specs.

Carl

Hi starcruiser,

The current rating is <0.6Amp during normal operation under certain load and <100mA Once variable voltage level 500volts-1700volts is reached as set by the MC34063 which will shutdown the pwm generator.But at first startup with bank depleted to 0volts the current surge for less than 2 second is less than 5Amps.
During prototyping during long period testing it's just warm to the touch.