Your walk through of finding the resonant freq by getting the circuit to ring is very good. I figured it out through lots of trial and error back when I was building coils. Re. the stray L and C of the probes: wouldn't you be able to mitigate some of this by NOT making contact with the top load? I.e. clip the probe's ground to the probe (so make a little circle), and bring it close to the coil.
Great job on explaining it all as you go from part 1 to 2 and the last number 3 videos! Thank you for sharing! Would you suggest a very simple small TC that uses IRFP460, that I can make in few days? We have a show for people and I like to have a small TC demonstrator that is fairly safe. The once I've tried from youtube channels didn't work at all. I have a coil of 800 turns on 2.5" plastic tube, using 0.27 mm (30 AWG) magnet wire. I also have an aluminium toroid that is 153mm across and 38mm thick. I'm not near as advanced in electronics as you are, but if I have a good circuit to follow, I can put it together. I have a real large TC that I've made, but SSTC is beyond my ability to troubleshoot. Thanks again.
If you use the schematic from part 2 of my SSTC series that should work pretty well. Sounds like the coil you have will probably work, it's just a matter of getting the frequency dialed in
Hello, your SSTC looks cool even if it's not at its best performance... Perhaps a TL494 plus a MOSFET gate driver chip can help? I'm not sure, I'm just trying to come up with ideas😅
That's pretty close to the approach I'm looking at for part 2, where I'll use an IR2153 to drive the gate from a cleaned-up feedback signal from the secondary coil - either with an antenna or a signal transformer To really drive the mosfets efficiently at this frequency range, I need close to 10A (for very brief periods) to charge the FET gate quickly enough
@@HyperspacePirate We're hoping for your success on this endeavor🙂 By the way, you might find it interesting to check Steve Ward's SSTC circuits, although they are more complicated than at first glance😅
Hello there! I've made a small TC and it's resonant frequency it's about 1.7 MHz. Do you have any idea on what oscillator i can use to achieve such high frequency to drive the mosfets?
how can you control the output frequency say for example you wanted to get to a particular frequency aside from 50khz or 60khz without affecting the output voltages?
@@JW-nq6do Check out my second video on SSTC's, it explains a lot about how to avoid blowing up your transistors. Idk why you're trying to run 1 ghz though. A typical tesla coil is like 100 khz - 500 khz or around that neighborhood
You could have just used a waveform generator to the bottom of the coil through a 10k resistor and oscilloscope on the secondary side of resistor. Adjust until amplitude shows.
