Kapanadze Cousin - DALLY FREE ENERGY

[John.K1]

Guys, I need your expertise.

My tesla coil has 55.55m  (it is aprox. 5.4MHz)  Now- 1/4 of this frequency is 1.35. - I am having this frequency when running my tesla (Kacher driver) and no antena attached. Today I measured my tesla a different way. Just with loose coupling of two turnes of wire connected to the signal generator. And the maximum peak was at 760 KHz.   I am confuse. Is my Tesla running at 1/4 at the peak or not?

[starcruiser]

GUys a few comments.

In regards to the capacitors, he (Ruslan) is just using a series parallel configuration to get the required capacitance to work with his coil to reach the desired resonant point. DO not get hung up on this, use the math and get in the ball park, use the Scope and signal generators to see the real resonant response as all caps are not what they are marked as, they have drift, i.e. the tolerance value. His coils will have a different inductive value than yours thus the different number of caps needed.

@John.K1, DO not get hung up on 1/4 wave secondary for the kacher (Tesla), all coils will exhibit full wave as you saw, decrease windings a few turns to increase the operating frequency so the 1/4 or 1/2 wave meets the need to "Kick" the grenande coils tank circuits at the correct operating frequency. How did you measure the resonant point initially? Scope across the coil? or open ended? When using the scope across the coil you are grounding one end via the scopes AC cord from the probe ground connection.

Also,
The electronics are there to synchronize the primary tank (15Khz or 27Khz or whatever) with the triggering of the HV section, the logic circuits are there for signal delay using a RC network to cause a few micro seconds or milli seconds of delay due to the charge of the cap before it reaches the trigger level for the subsequent inverter stage. This then triggers the drive for the Tesla/ HV pulse which hits the 15Khz tank circuit and allows the pulse to hit at the desired moment.

DO not get hung up on this circuit as there are many ways to get it done, this is why I said you would need some electronics knowledge to build and tweak as these fundamentals are required knowledge. Try to comprehend the reasons for the circuits not the circuits themselves unless you want to teach yourself about the various chips electronics theory.

Hope this helps some.

[John.K1]

@John.K1, DO not get hung up on 1/4 wave secondary for the kacher (Tesla), all coils will exhibit full wave as you saw, decrease windings a few turns to increase the operating frequency so the 1/4 or 1/2 wave meets the need to "Kick" the grenande coils tank circuits at the correct operating frequency. How did you measure the resonant point initially? Scope across the coil? or open ended? When using the scope across the coil you are grounding one end via the scopes AC cord from the probe ground connection.

Hi Starcruiser

When coil works with Kacher, I just enclosed the scope probe leads, or used my hand meter to read RF  and it meets 1.3Mhz as expected. When grounded , it drops very little (just by 200Hz) 
Without Kacher (just coil test with SignalGenerator) I used both ends of the probe. I also checked it connected to real ground and the result was 760KHz.  If I right understand, at that frequency 760KHz is the highest potential difference. And because I plan to disconnect Kacher and to run Tesla with pulses only (controlled by Arduino microcontroler) I guess I have to - as you said- to take off some turns off my tesla to get it back from 760KHz to 1.3MHz?
Thank you for your help

[Dog-One]

When coil works with Kacher, I just enclosed the scope probe leads, or used my hand meter to read RF  and it meets 1.3Mhz as expected. When grounded , it drops very little (just by 200Hz) 
Without Kacher (just coil test with SignalGenerator) I used both ends of the probe. I also checked it connected to real ground and the result was 760KHz.  If I right understand, at that frequency 760KHz is the highest potential difference. And because I plan to disconnect Kacher and to run Tesla with pulses only (controlled by Arduino microcontroler) I guess I have to - as you said- to take off some turns off my tesla to get it back from 760KHz to 1.3MHz?

John, something to be aware of.  When running as a Kacher, the gate delays in the silicon may force the coil to run at a sub-harmonic.  I didn't expect to see this and now that you are having a similar issue, I think it's something we should consider.  I have my coil setup to be "close enough" now where I can sweep the signal generator and find the resonant peak and with that I can make coil changes and re-sweep until I'm at the frequency I need to be.  Still have more work to do, but this process seems to work, it just takes a lot of patience.

[Void]

When coil works with Kacher, I just enclosed the scope probe leads, or used my hand meter to read RF  and it meets 1.3Mhz as expected. When grounded , it drops very little (just by 200Hz) 
Without Kacher (just coil test with SignalGenerator) I used both ends of the probe. I also checked it connected to real ground and the result was 760KHz.  If I right understand, at that frequency 760KHz is the highest potential difference. And because I plan to disconnect Kacher and to run Tesla with pulses only (controlled by Arduino microcontroler) I guess I have to - as you said- to take off some turns off my tesla to get it back from 760KHz to 1.3MHz?

Hi John.k1. If your tesla coil secondary wire length is 55.55m, then that wire length would be about a quarter wavelength for 1.35 MHz.
Another way to test your tesla coil secondary is to give the primary a single pulse and observe the ringing frequency on the secondary using
your scope probe right near the top of the secondary. If it rings at around 1.35 MHz when the primary is pulsed with a single pulse, then you
should be good. However, once you attach the so called antenna winding to the top of the tesla secondary, your resonant frequency will probably
drop quite a bit.

If you attached your scope probe directly to the secondary wires, it will pull down the resonant frequency.
You should just place the scope probe near to the secondary but don't connect it directly to the secondary
to check for the ringing frequency (resonant frequency).

All the best...