Making High Voltage Arcs with ZVS Circuit

hi in my last video i made an induction heater using a zvs driver circuit and now i want to see if i can use it to generate super high voltage but this circuit is a piece of junk as is the other day i was trying to just turn it on casually and it blew up this is the original schematic of the circuit but i already had to improve the gate supply voltage by adding some filter to it and yet it blew off see this circuit draws huge amounts of inrush current at power-up and it powers up as soon as you connect it to the power supply and when i connected it to my battery i was like accidentally connecting and disconnecting the battery during those critical times and it blew up so basically what i did i added a simple circuit to the original design that keeps the circuit off for a couple of seconds and hopefully during that period the power supply fluctuations have gone away and the circuit can power up safely so far the circuit has been pretty happy with my tiny addition here but i really prefer a proper soft start i don't like the fact that when it turns on it turns on at full power now when initially you power it up there is nothing and then boom it powers up and then you can start cooking metal with this circuit now as a fan of super high voltage i'm thinking i can replace my coil with the primary of a transformer with huge winding turn ratio and create a super high voltage at the output i do have these transformers from some old tube tv that are made for the same purpose i'm not a super fan of these because these have a bunch of diodes at the output to rectify the ac i want pure ac but hey whatever well this transformer has its own primary but i don't want to figure out which pin it is so i wound my own coil six turns around the same core so now i remove the big coil and replace it with the transformer and now we can ask the important questions would it work well let's power it from my power supply so that it's current limited here we go is it on so much current and it's rising is there any arc oh look at that interesting when it arcs the current goes down a little bit arcs arcs high voltage arcs look at these arcs from the space of the gap when it just starts jumping i would say the voltage should be around i don't know five to six kilowatts oh holy [ __ ] what's going on oh no no no no no come on turn off my alarm is gonna sound no i don't think it got to the sensor i really need to add a powerful vents to my room why did the transformer start to burn not my windings or anything the transformer itself maybe it was arcing internally and melted that would explain why the power supply current was so high if it was arcing internally and when i started arcing externally the internal arc would go away and that's why the current would drop maybe maybe the frequency at which the circuit oscillates is not good for the transformer what is the frequency actually let's do a quick check before the transformer goes flame on there we go it's 29 kilohertz which is good now that i think about it the higher we are above 20 kilohertz the better it is not for the circuit but for myself if you remember my graph of pain versus frequency below 20 kilohertz the current still messes with your nerves so it becomes very dangerous especially at such high voltage if i get shocked at low frequency it could be the end of me so it's good that it's 30 kilohertz but maybe i should even rise it further like 50 or 100 kilohertz why is there so much wire under my chair the design criteria for this circuit is different now for my transformers right now i'm driving 20 30 amps through the primary i don't need high current i need high voltage i need to increase frequency to reduce current so much less capacitors i don't need beefy transistors but high voltage one low input capacitance so they can switch faster i have to put it together again let's do it [Applause] oh wait like i mentioned these transformers have a bunch of diodes at the output that rectifies the ac so it doesn't matter how high you raise the frequency it would still have a huge dc component at the output that would shock the [ __ ] out of you forget about it i have a couple more of these transformers let's use one that's not burned with the same circuit here's another fresh used one with five turns around the core let's turn off the lights and see if you can see any arcs out of it before it burns in smoke [Music] [Applause] okay here we are oh it's making some noises and it smells like ozone but it's only drawing 1.6 amps so the other transformer was broken and probably was arcing internally that's why it just burned let's try it out oh oh my god look at the arcs they are huge how much current is it drawing wow it's current limiting the power supply it's drawing over 10 amps and the power supply level is dropping to 76 volts you know what it means we have to power it from a battery no more current limit [Applause] and we've got the power that's what i'm talking about look at this look at this art i was always looking for these arcs what's going on oh it's arcing to itself hey wait oh geez never mind it seems my wire was too close to the core and it was arcing from the wire to the core look at this wow so beautiful now what can i do with this too bad it's rectified otherwise i could use a multiplier circuit and increase it to gazillions of volts since it's jumping over two centimeters i would say it's somewhere around 30 to 60 kilovolts [Laughter] well i'm talking about the initial jump here initial jump it doesn't matter how far you can stretch the arc it's that initial distance that tells you approximately how high the voltage is actually there is something called marks generator that uses spark gaps to step up high voltage rectified high voltage to millions of volts maybe i should make one of those why is it changing color things are burning good thing i unplugged that fire sensor thingy and of course as always don't try this at home okay and if you want to know how i made that zvs circuit go to my previous video and watch that

Channel: ElectroBOOM

Views: 1,755,056

Keywords: educational, electrical, ElectroBOOM, science, electronics, engineering, entertainment, equipment, measurement, experiment, mehdi, mehdi sadaghdar, arc, mishap, physics, Sadaghdar, test, tools, circuit, funny, learn, shock, spark, discharge, high voltage, flyback, transformer, coil, inductor, capacitor, ZVS, Zero Voltage Switching, resonance

Id: m7VP36diOKY

Length: 8min 8sec (488 seconds)

Published: Fri Nov 06 2020