Kapanadze Cousin - DALLY FREE ENERGY

[NickZ]

    Guys:
   What I see is that when using transistors for the Royer circuits, even the faster switching transistors, they can't do what the Fets can do. As, I can't light a single higher wattage incandescent bulb, (not even a 25 watt) on the transistor circuit.  Compared to when using the Royer with the IRF 620 or IRF 634, on which I could light two 50 watt incandescent bulbs at least partially on my yoke core when using just a 12v, 4.5 aH battery.  So, it looks like Geo is right, when saying that Fets are the way to go.

  What we need to determine is which mosfet is the best for our purpose. We know about the IRF250 or 260N, but perhaps there are even better ones.
  The original Royer circuit is fairly useless, as the Fets or transistors will overheat in no time at all, even on 12v, not to mention 24 or 36 volts.
So, I'm hoping that the Mazzili oscillator will work without the over-heating issue, as Geo and others have mentioned.
  It looks like a version of the Mazzili crt is what Igor is using also, now that his induction cooker oscillator died. But, if the cooker's circuit works much better than the Mazzili, then we need to work on improving our circuits to match the cooker's performance.
  Any thoughts about that, and how to go about it???

  Grum:  I'm not really sure that the 230 volts that my analog meter is reading at the output of the oscillator is not correct, but even if it's true, then it could be that there is very little current to go along with it. As it seams that the transistor circuit is good at raising the voltage, but, at the expense of the amps. So, it may be a fluffy voltage, at best.

[Hoppy]

Nick,

When you get your 5W zener diodes give the Mazzilli another try and make sure that you limit the supply current from your battery to hopefully keep in that smoke.

[d3x0r]

    Guys:
   What I see is that when using transistors for the Royer circuits, even the faster switching transistors, they can't do what the Fets can do. As, I can't light a single higher wattage incandescent bulb, (not even a 25 watt) on the transistor circuit.  Compared to when using the Royer with the IRF 620 or IRF 634, on which I could light two 50 watt incandescent bulbs at least partially on my yoke core when using just a 12v, 4.5 aH battery.  So, it looks like Geo is right, when saying that Fets are the way to go.

  What we need to determine is which mosfet is the best for our purpose. We know about the IRF250 or 260N, but perhaps there are even better ones.
  The original Royer circuit is fairly useless, as the Fets or transistors will overheat in no time at all, even on 12v, not to mention 24 or 36 volts.
So, I'm hoping that the Mazzili oscillator will work without the over-heating issue, as Geo and others have mentioned.
  It looks like a version of the Mazzili crt is what Igor is using also, now that his induction cooker oscillator died. But, if the cooker's circuit works much better than the Mazzili, then we need to work on improving our circuits to match the cooker's performance.
  Any thoughts about that, and how to go about it???

  Grum:  I'm not really sure that the 230 volts that my analog meter is reading at the output of the oscillator is not correct, but even if it's true, then it could be that there is very little current to go along with it. As it seams that the transistor circuit is good at raising the voltage, but, at the expense of the amps. So, it may be a fluffy voltage, at best.

I really wouldn't have thought a transistor would work well; you have to supply a constant current to the gate.  mosfets work more as a capacitance... you just need a pressure and it's not a current flow....

http://www.youtube.com/watch?v=a3H-lrMB0PY

[Grumage]

I really wouldn't have thought a transistor would work well; you have to supply a constant current to the gate.  mosfets work more as a capacitance... you just need a pressure and it's not a current flow....

http://www.youtube.com/watch?v=a3H-lrMB0PY

Dear d3x0r.

Whilst I agree with some of your sentiments regarding Mosfet's versus BJ Transistors, you are possibly forgetting that the older members of this Forum had nothing else !! There were many powerful amplifier designs available so I do not see why the humble BJT can't do the same job !! Speaking from my own experience with the original GeoFusion circuit my BJT's have performed beautifully. In fact I was getting the base bias resistors hotter than the transistors !!

Most problems are associated with miss matching impedance IMHO. As has been stated previously a simple 12 V 50 W halogen bulb can be placed in the positive line ( series ) which will usually blow before the Transistors / Mosfet's die. In fact this I have used as an indicator of overcurrent, as they start to light up as the current increases !!

Cheers Grum.

[d3x0r]

Dear d3x0r.

Whilst I agree with some of your sentiments regarding Mosfet's versus BJ Transistors, you are possibly forgetting that the older members of this Forum had nothing else !! There were many powerful amplifier designs available so I do not see why the humble BJT can't do the same job !! Speaking from my own experience with the original GeoFusion circuit my BJT's have performed beautifully. In fact I was getting the base bias resistors hotter than the transistors !!

Most problems are associated with miss matching impedance IMHO. As has been stated previously a simple 12 V 50 W halogen bulb can be placed in the positive line ( series ) which will usually blow before the Transistors / Mosfet's die. In fact this I have used as an indicator of overcurrent, as they start to light up as the current increases !!

Cheers Grum.

ya but... probably could just reduce the smaller resistor... it's a guarantee of power loss though....


ya well... that circuit won't a circuit can.


Probably remove the pulldown resistor cause a transistor doesn't need it, and reduce the low resistor to 470 or 300 something