Kapanadze Cousin - DALLY FREE ENERGY

[TinselKoala]

On tuning: I think it's easier to tune the load to the oscillator, rather than tuning the oscillator to the load. Tuning the load is done in the same way as tuning the oscillator, by varying inductance and capacitance. Putting a variable inductor in series with the fixed inductance can make tuning the load "sweet and easy". You can look at my electrosmog harvester for an example of tuning the load to the oscillator.
If you must tune your oscillator, try putting a big HV air-variable tuning capacitor in parallel with the fixed-value caps. Once again, keep current paths short, heavy and symmetrical. All the fixed caps in the tank should be the same high-quality low ESR type (poly film or maybe mica) and C and V rating. Little 1 kV 50 pF ceramic caps can be added for fine tuning and then the HV air variable for ultrafine tuning.

The ZVS type driver circuit automatically runs at the resonant frequency of the tank circuit made up of the inductance of the core and the capacitance of the tank caps, and it makes a nice sine wave output if it's working right. Changing to some kind of variable frequency/variable duty cycle drive would seem to defeat this feature of the ZVS oscillator driver.

[itsu]

Nick,

I don't think the secondary coil gap is important, certainly not for putting a future 3 turn coil there as it can be wound over it.
To use the whole circumference is better for an even field in the core (no leaks).
But i can easily make a gap there to see if it matters.

That you hear no ringing is because the frequency is to high (26KHz) in normal mode, it does not mean we are not in resonance.

Concerning using NEW 100W bulbs, well they (and 75W) are banned since 2009 here in Europe, so very hard to come by here nowadays.

I will be following TinselKoala's advice and try to match the load to the Mazzilli as that should run in normal mode to stay cool for a decent load.

Also Void is very right when he asks "Why might your circuit be lighting more lightbulbs than some other people with similar ZVS drivers can light?"

Regards itsu

[Utopia Now]

Hi Itsu,
In Holland  you can still order normal, standard ( old fashioned ) lamps.
The have them from 15 watt up to 300 watt  in  normal E27 fitting.
http://www.gloeilampenhuis.nl/standaardlamp-helder

They have more than enough , they are still produced .. they  told me on the Phone.

[Hoppy]

Hi Itsu,
In Holland  you can still order normal, standard ( old fashioned ) lamps.
The have them from 15 watt up to 300 watt  in  normal E27 fitting.
http://www.gloeilampenhuis.nl/standaardlamp-helder

They have more than enough , they are still produced .. they  told me on the Phone.

And in the UK. An EU loophole allows production for industrial usage, described as 'rough-service lamps' on the package. Many retailers are selling these lamps, which are of a 'tougher' build than the original domestic lamps and about the same cost.

[Hoppy]

   
   Please Geo... do it for the world to see, it's time...  be brave...
I'll back you up, so there's more than just one of us going for it.  Open source...
 
                                                                    NickZ

Yes, please surface again Geo and join Hope Girl to save the world with your GEG - hehe