Thank you! Hope you will find more useful things!

I think softer switching is actually the key to better wireless energy transmission in a Tesla coil. That way, you get a nice sinousoidial primary current that lets the secondary resonate smoothly instead of building up voltage so fast that it creates an arc that wastes energy. However, wireless power transmission with a Tesla coil or a similar device is extremely impractical and inefficient (but definitely really cool). I was only able to get a few mW from a small solid state tesla coil powered with 24 watts.

I'm not sure how important the Gerbers are to get similar results - I did not apply any special routing rules, not even proper impedance calculation for the traces. Also its just a homemade 2 layer board done with an iron so if I where to make 2 pieces, they would turn out differently. Regardless, I release project related files only for a certain tier of Patron subscribers as a way to thank them for supporting my efforts.

@@FesZElectronics I didn't know that and I totally understand. I'll try to reproduce the circuit with my cheap CNC and I'll let you know how it went if you're interested. For your information I also did some experimentation with the BFU768 silicon germanium npn transistor. It has a ft of 110GHz and it gives a nice comb pattern until roughly 4GHz, I can even still see some peaks until 8GHz thanks to the -80dBm noise floor of the analyzer. I never subscribed on patreon but I'll definitely check your page, your videos are amazing.

My oscilloscope does have the FFT function, but it has 2 major limitations. On the one side the oscilloscope bandwidth is only 70MHz, so that will have an impact in the FFT results also; and secondly the FFT is done over single oscilloscope captures of 4000 data points points - so the FFT is not very useful to look over large frequency intervals. For these 2 reasons a spectrum analyzer is the better choice.

@@FesZElectronics Thanks for the informative reply.

You can google or search on ebay for "LTDZ 35-4400MHZ spectrum analyzer" and you should find it. But I think there is a better board available, so maybe you can find something else by simply searching for "USB spectrum analyzer".

Thank you! The model was for the 1N4148; I got it from NXP. The main reason for using that was to have a more accurate behavior than the default model that LTspice comes with for this component. Of course, any of the parameters inside the model can be edited afterwards to see how that influences the behavior.

@@FesZElectronics thank you for the information. Keep up the interesting uses of LTSPICE in the real world.

@@FesZElectronics You probably already know this, but you can use subcircuits with the built-in schematic symbols www.analog.com/en/technical-articles/ltspice-using-an-intrinsic-symbol-for-a-third-party-model.html

@@FPiorski I did not know of this. Thanks for pointing this out!

I know. I just didn't want to risk braking it...

Hello. I guess I was comparing it to a proper signal generator. The CG can be built really small.