Kapanadze Cousin - DALLY FREE ENERGY

[NickZ]

  Ok, I made the Flathunter's oscillator for my Kacher crt, but, I blew my brand new IRFP260N mosfet. It fried before I could turn the thing off, in just a few seconds.  No light, nor oscillations. I used a IN4007 diode between the gate and source, and a 480 resistor on the gate.   No oscillations, at 12v, 2 amps, and when connected to a 12v 10amp battery charger the fet smoked before I could blink an eye.

  I replaced the dead fet with the previously installed 5297 transistor, which came out of a Tv or crt monitor's HV for the horizontal.
  Now it actually works a bit better than that same one did previously. I don't know why though.
But, still no cigar... as far as seeing something interesting, in how it interrelates to the grenade/yoke crt, but, I have gotten a higher output now to the small 220v 20w microwave bulb that I'm using to test the 168 turn grenade output coil, to my earth ground connection.
  I'll make another video soon as I get further along with this tuning effort.

[Grumage]

  Ok, I made the Flathunter's oscillator for my Kacher crt, but, I blew my brand new IRFP260N mosfet. It fried before I could turn the thing off, in just a few seconds.  No light, nor oscillations. I used a IN4007 diode between the gate and source, and a 480 resistor on the gate.   No oscillations, at 12v, 2 amps, and when connected to a 12v 10amp battery charger the fet smoked before I could blink an eye.

  I replaced the dead fet with the previously installed 5297 transistor, which came out of a Tv or crt monitor's HV for the horizontal.
  Now it actually works a bit better than that same one did previously. I don't know why though.
But, still no cigar... as far as seeing something interesting, in how it interrelates to the grenade/yoke crt, but, I have gotten a higher output now to the small 220v 20w microwave bulb that I'm using to test the 168 turn grenade output coil, to my earth ground connection.
  I'll make another video soon as I get further along with this tuning effort.

Dear Nick.

Oh dear, out came the magic smoke !! You did have your Mosfet on a heat sink, I hope ? I too am looking at Kacher/Slayer devices ATM and discovered the very same issue.

I am using MJE 15030 transistors. Without a heat sink they go into thermal runaway, very quickly but remain very stable with a goodly sized sink.

I have attached my circuit schematic for interest. Mine oscillates at 1.2 mhz with a heavy 3 turn primary coil. DC volts 20 at 0.6 A

Cheers Grum.

[itsu]

see this link for a MOSFET Kacher by JoeFR (follow that thread for improvements):

http://www.underservice.org/index.php?topic=121.msg819#msg819


Regards Itsu

[Bat1Robin2]

Tesla impulse will interrupt the yoke drive saving it from cooking itself as seen on scope do not over filter the power supply with extra large caps. follow the schematic.  The yokes are driving a nearly dead short only a 12 turn coil they must be heat sunk with fan then interrupted with the tesla impulse during drive of yoke fet. I cooked many FET before realizing this. Same 24 volt power supply used for tesla and yoke do not deviate from the schematic too far or it will become unstable and blow FETs. Use 24 volt! .  Dont go over 26v and dont go much under 18v. Keep drive frequency from 14khz to 60khz. under 14v will just shut off, over 60khz will normally cause a blown FET. 25-27khz will be good startup frequency.  (72% reported here) Nick you posted that power supply needs to be very stable i observed just the opposite if using Caps on the power supply the effect stopped and efficiency drops and bulbs go out and FEt begin to blow. Power supply must be allowed to fluctuate to see "the effect of the tesla". Follow schematics, I tried alternate output version efficiency dropped but interestingly the Earth ground became a help and i measured approx 3/4 amp on earth ground wire. but efficiency never went above 50% with this output configuration show below.

[NickZ]

       Bat1:
       Your signal looks more like interference from the Kacher to the grenade/yoke, than actually helping it to produce "extra" power.
       Your scope shot signal doesn't look like Ruslan's, or Akula's scope shots.  Of course, I don't know much about that.
Maybe someone else can elaborate more about that.  T-1000 mentioned something along those lines, concerning the cut off effect, but I don't know if I buy it. I'd like to see more proof.

   Itsu: Thanks, I've already taken a look at that source for the mosfet Kacher crt.
           I suspect that my Kacher secondary coil is too short, and therefore does not have enough power at the output, to trigger the 3 turns coil/grenade resonator crt to be able to see any real gain, as I'm only using 12v.
I removed the 3 inch ferrite rod, and can see a higher HV output, but, I need a scope to further adjust the two different running frequencies.
   Question: If I add more turns to the Kacher secondary, will it raise or lower the frequency???
   How do I know which way I should go? Adding more turns, I suspect.