Solid State Tesla Coil (SSTC) - Part 3
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- Опубліковано 5 вер 2024
- This is part 3 of my video series on designing and building a Solid State Tesla Coil (SSTC).
Part 1:
• Solid State Tesla Coil...
Part 2:
• Solid State Tesla Coil...
In this video I'll show the following:
-How to build a full H-bridge driver
-How to use secondary coil current as feedback to drive the primary coil
-How to adjust the phase of the driver to maximize output power
-Results of running the coil off mains (120VAC) instead of 30V DC
Hardware used is mostly the same as part II, with a few differences:
-IXTQ36N30P 300V / 36A MOSFETs for the H-bridge
-2200 uF 400V Filter Capacitor for mains voltage
-BOTH sides of the gate drive transformer primary have DC blocking capacitors. Having DC blocking on only one side caused some weird level shifting problems that resulted in erratic output.
-300A/1600V Bridge Rectifier (massive overkill, but i happened to have it already)
www.amazon.com...
Music Used
Serge Pavkin - Modern Technology
Serge Pavkin - Heavy Industry
Serge Pavkin - Fundamental Analysis
Serge Pavkin - Digital Future
Serge Pavkin - Innovative technology
Oh I love it!!!! From now on you are one of my favourite youtube Channels!!
Thanks. I'm a big fan of your content
@@HyperspacePirate Maybe revive the series by replicating Skori's Mini SSTC schematic which uses direct feedback (no ICs), see the results @Vectoranalyser or @Magneticitist
@@HyperspacePirate Perhaps continue the series by featuring Skori's SSTC schematic (Skori Mini Tesla 2) ? Tefatronix, Magneticitist and Vectoranalyser reproduced the circuit to varying degrees, check them out to see results
THOSE ARCS ARE INSANE!!!!!!!!!!!!!!!!!WELL DONE!!!!!!!!!
This SSTC circuit is doable, thanks to your awesome, well-explained and easy to follow tutorial😄
We will be waiting for part 4👍
Woahhhh! Why didn't I know about your channel when I first started my electronics journey!?? Love your videos and the way you explain the working principals of circuits, very similar to 3Blue1Brown.
This is great! I'm actually making a video of a very similar circuit next (H-bridge, antenna feedback, and 340V with IGBTs).
I'm also planning on using IGBT's for my next one. The coil in this video series resonates at ~500-520 kHz, so IGBT's aren't really feasible, but I've built another one with a much larger secondary diameter and huge top load that should resonate at ~150 kHz, and I plan to get some of those really big "brick" IGBT modules and make it a DRSSTC, or even one of those QCW types that shoots the super long, straight arcs in short bursts by ramping input voltage.
@@HyperspacePirate Nice! I'm using my own version of the Loneoceans SSTC 2 circuit for my next video, and so far, I'm getting up to 12" sparks from a 8" coil. DRSSTC is definitely on my list for upcoming projects, and then I'll hopefully do a full QCW tutorial one day as well. Who knows? I might have to collaborate with your channel for the QCW video, if you get yours working well and I need help!
@@LabCoatz_Science The key with a QCW seems to be building a high-power class D amplifier to create sawtooth ramp pulses from 0V to VCC in a 10-25 mS timeframe, then using that as input voltage for the primary.
Nice arcs, that's what I want. I managed to get a couple tesla coils going, one mini tesla coil did exceptionally well, I think it was only 10cm tall but the arcs it could make were double in distance of how tall it was about 20cm but after that I didn't get it that good anymore, however I now have built a few signal generators and I now have an oscilloscope so it should be easier now, this video sparked my interest again to look at my tesla coils I have and maybe I can improve my circuit taking yours as an example.
The same kind of thing happened to me. I built this tesla coil that produced arcs nearly a foot long for just a few seconds in total. I haven't replicated that yet, but it sure motivates you to keep trying.
@@dylanm.3692 i dare you to put your tongue on the topload when it's active
Seems, on 8:57 there are all IC is a 74hc14.
Not only that
The inductors are in farads
Cool man great video and build. I like how pulling the feedback high works well at interrupting, I'd have figured it may cause some problems only forcing one of the fets off but it makes for a really easy addon. At 50hz bps may as well try it unfiltered CW also.
Thanks. I've run in CW mode, but it draws a ton of current / causes lots of FET heating and it doesn't make a very interesting arc. The discharge is more of a puffy "bush" shape than a linear arc. I've found through experimenting that the most interesting looking /longest arcs seem to come at about 10-25% duty cycle on the interrupter, which also dramatically lowers current/heating, In part 4 of the series I'm gonna talk more about this and also use an arduino to play music
@@HyperspacePirate you'd have to remove the DC smoothing but typically it draws less and you get longer arcs cuz you have some of them riding the quarter wave ramps
best explanation in the world. thanks.
Nice! Always love the circuit diagrams.
Awesome! Nice work! The How about trying to make your coil QCW?
Awesome video and design!
16:20 neat idea!
Do not get me wrong, it is impressive how far you pushed this project, but I was expectibg styropyro's level of lightening....
I had an idea for the interrupter I wanted to run by you, what if you used a IC with NAND gates, something like a 74hc00 in order to interrupt the signal going to the mosfet drivers. This in my understanding will shut off both the drivers instead of leaving one driver active.
Great video! Where can I find schematics?
Well done. Excellent video editing and explanation. You really know what you are talking about. But why the nervous background music all the time. It is so distracting. And since you are talking most of the time it is not needed to fill in the silence.
Hey amazing video, just noticed that your battery powered Tesla coil, had similar arc length, while running at much lower voltage
liked ur video
Well done!
Hi at around 10:00. How did you choose the values for the choke and the cap bank, thanks!
Any specific reason for driving the control circuitry from 4s lipo?
I was too lazy to create a transformer for a separate supply to the logic board, and 4S was chosen because I wanted to supply as much drive voltage as possible to the MOSFET gates without exceeding V_GS-max which was +/- 20V. 5S would have caused overvoltage (and I think it would have exceeded the max voltage on the TC4422 drivers too).
how much is the winding turns of gdt transformer
When are the arcs safe to touch, when are they not? I assume the latest battery powered version is totally fine. Does it depend on mains isolation ?
nop. it depends on the frequency. anything above a certain frequency (i dont remember at what frequency though, sadly) wont shock you anymore because the polarity is changing faster than your nerve cells can. you can still get burns from these arcs though, so you should be careful and not touch them for long amounts of time.
I noticed that on the new circuit there is no duty cycle adjustment, I'm guessing due the the impedence of the gdt shot through is avoided. Im still new to electronics and I want to know if you removed the duty cycle adjustment because of the fact that the voltage on the gates take time to rise up and the mosfets have a relatively high resistance as the one switchs on and the other off?
Having resistors to limit the gate charge speed but reverse diodes to make the gate discharge almost instantaneous pretty eliminated the shoot-through problem for me.
Just wanted to know whether the coil works better if the transistors are driven by a GDT or if they are driven by half bridge driver chips like IR2184..?🤔
In theory it should work fine either way. I think GDTs are more common for tesla coils because they isolate the drive logic from some of the nasty noise / spikes and other stuff on the H-bridge side of the circuit.
@@HyperspacePirate thank you sir!!
does your phase lead circuit output 50% duty cycle across all resistances? seems like its dependent on the thresholds and the rc waveform isnt exactly triangular
or perhaps exact 50% duty cycle isnt necessary since theres dc blocking caps, anything from 45-55% would work just fine?
It's approximately 50% duty cycle, but it can vary +/- 5% or so. I didn't mention it in the video, but I discovered that my duty cycle "gap" logic i used in part 2 wasn't necessary when using a gate drive transformer that's capacitavely coupled to the FET drivers. Even if the high and low side had a bit over overlap in the "ON" state, there wouldn't be shoot-through on the H-bridge.
@@HyperspacePirate yup because of the bipolar gate drive, when the 2 gate signals cross over ideally it is at 0v where both fets are off. This may vary in real life if there is uneven delay in gate signal(eg if gate drive of one side has higher inductance than the other)
next tutorial on qcwdrsstc
Strongly considering doing this, actually. Right now I'm trying to finish up Part 4, which is about music / interrupter modulation. Part 5 will probably be a QCW.
Yes
Is the resistor in the snubber essential?
Love how detailed these explanations are btw
Yep
Its there to limit the current or the capacitor gonna blow up
AUNT SHANNON IS IN THE HOSPITAL CALL GRANDMA LOVE YOU
Was the primary resonating with the capacitor? or its just the secondary resonating.
Just the secondary. The cap on the primary was for DC blocking
how did the circuit start with a feedback from the circuit itself???
@@guitardude5364 Initially i had a jumpstart button to send a pulse through the primary coil, but after fine tuning it, the oscillation would start itself when power was applied
@@HyperspacePirate tuning what? i did the same using a feedback transformer but the oscilation didnt start by its own unlike using a antena. Im comfused. what did you tune to fix it?
Can we give 300 dc to it
Because in India the mains voltage is 220 AC and after converting into DC it got 320 DC in your project can we give 320 DC
And I am also using big value of mosfet which is 500 volt MOSFET
That would be possible, but you'd probably wants FETs that are at least rated to ~600V to avoid blowing things up. I'd also probably use a few more turns on the primary to increase its impedance because the current at 300V would be enormous. My FETs already get pretty hot with the current at 120.
Thank you ❤️
@ :30 i pooped a little
how much is the winding turns of gdt transformer
how much is the winding turns of gdt transformer
how much is the winding turns of gdt transformer
how much is the winding turns of gdt transformer