How a ZVS Fly-back Driver Circuit Works and How to Build One

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How a ZVS Fly-back Driver Circuit Works and How to Build One

Рет қаралды 112,276

Күн бұрын

In this video, I explain how the circuit of a ZVS flyback driver works. I go in depth in my explanation of the different circuit elements and how they interact. After my explanation, I show how I built my flyback driver, how you can build one, and a cool demonstration of it in action. This circuit looks complicated at first, but it can be understood by almost anyone with basic electronics knowledge and this video. As far as I know, this is the only KZfaq video so far that can explain the inner workings of this popular circuit. Good Luck building!
Here are a few good soldering irons to use:
A small cheap iron- amzn.to/2vG9I06
A nice soldering station- amzn.to/2fIwh05
Stuff you need for circuit board etching:
Copper Clad board- amzn.to/2fIfdr6
Ferric Chloride Etchant- amzn.to/2vFAEgb
My editing computer:
amzn.to/2vG9Z30
If you want a ZVS driver, but dont feel like building one, you can buy this:
amzn.to/2fIfQkn

Пікірлер: 227

@TheJuliusCo 3 жыл бұрын

Easily the most complete Mazilli Oscillator explanation out there for practical experienced people, congrats!

@wombatau 3 ай бұрын

It’s not often that you see real genius on KZfaq. Keep doing your thing mate, whatever that may be. Genius isn’t free, it’s a friend that always needs encouragement.

@zezeA380 2 жыл бұрын

One of the best tutorial to understand how a zvs driver works!

@edsonkumenya5626 3 жыл бұрын

From the first moment I step in, I appreciate you, doing great young bro.

@JackWilson327 Жыл бұрын

Thank you. Cleared up a few things I was really stuck on. I really appreciated the pencil & paper narrative. Nice work.

@owenpenning1597 3 ай бұрын

Thank you! This is the first video that got me to understand this

@dalenassar9152 5 жыл бұрын

At about timestamp 15:16 it should be pointed out to NOT turn up the power while the arc is running, since you have BOTH hands (one reaching) on high voltage circuit components (and you can't watch both simultaneously) and may slip. This may not be so critical in other 'safer' circuits.

@ericklopes4046 6 жыл бұрын

The most efficient flyback I had was the BSC28. I had 2 BSC28 winded together with secondaries in series and damn, huge fat arcs. Also, I got an AC filter inductor from a TV power supply stage, with one of its coils as the inductor for the ZVS and the other coil for audio modulation (requires a 30w audio amp). Very decent modulation.

@ericklopes4046 6 жыл бұрын

"So the current could flow through your heart, and you could die, and that's not good" lol Loved the explanation about how they get to switch 0 volts. Thanks!

@breezetix 4 жыл бұрын

beautiful resonance arcs!

@sovietrepublic38 5 жыл бұрын

This is a push-pull configuration rather than a flyback (not a big issue anyway). Nice heat sinks...I only have tiny sinks and my MOSFETs (IRF540 @ Vgs = 15V) always get very hot even with a current of only 1A . Great video!! I like it.

@charleshoward9983 7 жыл бұрын

way over my head,Great video Thanks!

@TannerTech 7 жыл бұрын

+charles howard Yeah, this kind of stuff is a little hard to understand. It took me a few years to learn it real well. I'll make some videos about basic electronics soon, would that help?

@jakub3851 3 жыл бұрын

@@TannerTech I kinda understand but after a few minutes it becomes too much

@NicolasPicklelas 2 ай бұрын

Very informative. I will be building this once I get my Cockcroft-walton multiplier working!

@chrisw9597 2 жыл бұрын

Hey Tanner, I’ve been watching a bunch of your videos recently, learning about electronics. What was your process of understanding circuit diagrams? Sometimes I see some and don’t really have an idea of where to start, or what all the components are supposed to do. Thanks!

@iworkonlyformyself3855 2 жыл бұрын

Same here 🤣😂

@wyqid 5 ай бұрын

6 years ago this video was uploaded. In that time Tanner graduated with his doctorate and built the first cold fusion reactor, after that he got bored and and got his medical marijuana card and just sits in the backyard all day burning ants with a magnifying glass. RIP Tanner.

@TannerTech 5 ай бұрын

This is hilarious 🤣

@TheMcSebi 4 жыл бұрын

you did a really great job at explaining this! thanks a lot.

@TechBuilder 5 жыл бұрын

Nice!

@jbsteyn6358 7 жыл бұрын

Please make a video on a spark gap teslacoil with this zvs driven flyback

@TannerTech 7 жыл бұрын

+Jb Steyn already done. Check out my previous videos. There video is called diy lightning machine

@user-cs7bo2wi9u 11 ай бұрын

정말 훌륭하다 한국에도 이렇게 설명을 잘해주는 엔지니어가 있었으면 한다. 대단하고 감사합니다.

@MohammadAbouBasha 4 жыл бұрын

can I use a circuit like that to initiate a HF plasma to modify my arc welder so that it can start the arc without having to scratch the metal piece?

@siavasharash5448 Жыл бұрын

Hi tanner I get confused🤨 That flyback transformer not grounded. So how current can pass throw heart and kill some body.when completly isolated transformer is in use???

@sfaunl 6 жыл бұрын

Beaware that when you rectify 40v AC, you get nearly 60v DC. Be sure that components can hold up to this voltage.

@neutronenstern. Жыл бұрын

depends on the waveform. Peak voltage stays the same. And RMS Voltage will also stay the same. Its just, that if you rectify eg. 230V AC power, and charge a capacitor with it, this capacitor will charge to 325V. But as soon as you connect it to a load, the average voltage should drop to 230V again. This works only, because the peak voltage of 230V AC actually isnt 230V, but 325V. Only the RMS voltage is 230V.

@gspowersolutions 3 жыл бұрын

Thanks for sharing this awesome Video! Keep rocking dude. Subscribed to your channel. Please clarify my doubt, if we increase the turns in the choke windings, will it reduces or increases the supplied amps to the LC tank circuit?

@TannerTech 3 жыл бұрын

Thanks man! The choke winding is there to slow the rate at which the current increases, not necessarily the amount of current. It is also there to stop any of the high frequency components from the oscillator from interfering with the rest of the circuit. The more windings, the longer it takes for the current to reach it's max value.

@gspowersolutions 3 жыл бұрын

@@TannerTech Thanks for your prompt reply.

@klaus6178 2 жыл бұрын

Hey, I have some questions for you if you're still around. Very nice explanation by the way.

@iceho6460 3 жыл бұрын

Just love the intro!

@rickliles2460 3 жыл бұрын

The 470 ohm resistors are to protect the zener diodes - very little current flows thru the gates of the mosfets since these are voltage controllede devices compared to BJT

@TannerTech 3 жыл бұрын

Good to know, thanks!

@RayceVR Жыл бұрын

Impressive stuff. Earned a sub. ❤️

@Buzzhumma 3 жыл бұрын

Well done Tanner. It must be the most effecient circuit to drive a coil. Any ideas on how efficient it is and how to increase its effeciency to a max level ? Simple but brilliant circuit!

@omsingharjit 6 жыл бұрын

Thanks for Explanation on ZVS , plz help for my doubts , 1 - can I use gate drive resistor of 1/4 watt or can I use higher value of resistance like 700 ohm or 1kohm because mosfet can turn on with lower current and even on low voltage !!! ? 2 - l c tank is fixed for this ZVS Driver or we can vari cap value more or less than .680 nf ???? And 3 - can I use 60 Vds mosfet instead 200 Vds type if not then why Because primary turn is only about 2 -3 Turn should not genarat such high volt ????!!

@GalenA1722 Жыл бұрын

Man why does no one talk about his amazing intro

@agreatvoid148 6 ай бұрын

I think that the capacitor and the primary are making LC oscillations which is amplified by the mosfets and the choke is to recharge the capacitor🤔

@spandandutta2485 5 жыл бұрын

Hey tanner can I use 1n4007 diodes instead of uf4007...I saw the data sheet of 1n4007 at the bottom I noticed it was written tested at 1mhz !...@4v.and the zvs only oscillates at roughly 40-50khz... don't have uf4007😁

@dalenassar9152 5 жыл бұрын

Hi Tanner ... NICE prizes you won! @ 1:03 I would like to share one thing with you that I didn't learn for quite a while: The plural of 'axis' is 'axes'

@VincentBalmont 7 жыл бұрын

how long can u keep the arc going for, will the driver or transformer melt or explode if you run it for a long time?

@Fortitudoo 6 жыл бұрын

bravo dude ur awesome that was so well explained

@gunrunner110 3 жыл бұрын

How do you regulate the output voltage? Could I just lower and increase the voltage going into the ZVS driver? Thanks for your video! Great work!

@Alekssport2101 5 жыл бұрын

Очень хорошо обложился игрушками

@gameselectronics2560 6 жыл бұрын

Try to add some more capacitors to smooth the voltage more beocuse then you will get even bigger arcs. ;)

@mareksieradzki1458 2 жыл бұрын

Cool, thanks.

@ripstephenhawking8787 2 жыл бұрын

Whatever happened to this kid? He reminds me of myself. I watch him for fun despite already completely knowing the material, he's the real deal. Not rich, not fancy but his smarts and dedication get him into creating some awesome projects. I used to take apart old broken electronics to get parts, we were so poor when I was a kid. My mom would always shop at St.Vincent de Paul thriftshop and I'd always ask for and end up leaving with, some kind of broken or obsolete device or another, for free! That was me getting a "toy..." I never understood kids my age that threw fits in Walmart because mom said no to Gi Joe while I knew better than to even look let alone ask. I hope Tanner applies himself and gets to college, I have a masters in electrical engineering and it's changed my life,

@TannerTech 2 жыл бұрын

Hey, thanks for the compliment! I was the same way when I was younger, and still am. Finding a broken piece of equipment to take apart/harvest parts from is better than anything. I am now finishing my second year at MIT getting a degree in electrical engineering. I will be doing a masters degree as well.

@ripstephenhawking8787 2 жыл бұрын

@@TannerTech well that's beyond awesome. I knew you were going to do well. MIT is better than well, it's great. I hope to see some new videos and content from you sooner or later. You already have a fan base and followers. Look at basically the KZfaq empire that Electroboom has. He's a master EE as well. Now he makes so much from KZfaq he doesn't have to do anything else. I have no knack for video production otherwise I'd try it myself. Good Job Tanner. Always gonna have a fan here. -Rex

@EnergySeeker 4 жыл бұрын

what mosfet are you using in this one ?

@amirhoseinirandoost 10 ай бұрын

Very good 💯🙏

@cbfull 5 ай бұрын

The copper was melting and forming a droplet, not vaporizing. Only a very small amount was actually vaporized.

@shamanking5195 10 ай бұрын

Hi did you put heat transfer paste between the heat sink and the flyback ??? do you have to put new zip tide often ??? when you say wax , do you mean bee wax ??? can the small heat sink be located anywhere between the flyback and the spark electrode or does it have to be at the end of the cathode the way you in the video ??? Thanks.

@stevenbliss989 2 ай бұрын

A twist on the common multi-vibrator, but from what I see, NOT very efficient, especially under no load (power loss in the gate drive resistors). I wonder if there is an exiting fix for this somewhere, I for one have never seen such a thing. I guess it is very popular because it is simple. This was seven years ago! ...WOW!

@VK2GPU 4 жыл бұрын

Ahh back when I was about 14 or so I used to tinker with flyback transformers. Much simpler circuit, much lower current sadly. I was lucky enough to get given a pile of stuff from a local TV repair shop.

@BenjaminMarshallScienceMan 3 жыл бұрын

"This diode right here..." (Waves pencil all over the place)

@borisrimpila2668 4 жыл бұрын

Just keep working.. There's a million dollars waiting for u somewhere in the future.....

@brunostank 2 жыл бұрын

CAN you make a SIMPLE ignition COIL & CDI SYSTEM WITH AC TRIGGER MAG NO 12VOLT SYSTEM FROM FROM ALTENATOR ON A 2CYCLE ENGINE AND FIRE SPARK PLUG

@ihtsarl9115 3 жыл бұрын

Nice video thanx but theoretically how did you calculate the feeding gate resistor (470ohm) and how to calculate the Ciss total input mosfet capacitance and how to solve it?

@nothisispatrick2596 3 жыл бұрын

Thanks dude ^^

@TannerTech 3 жыл бұрын

No problem!

@mcsaatana1614 3 ай бұрын

gotta ask.. About those alligator clips.. Are those suited for that high voltages? Be honest. Great vid rly, but just watching your hands so close to the cables.. High voltage can easily jump through the cable's outer layer. And what about the screwdriver? pls use pvc rod or something.

@sinanhossain2880 Жыл бұрын

Can i use battery instead of those chunky transformer?

@jakebozz7677 6 жыл бұрын

17:09: "Oh crap!.... These burn holes in your carpet!" Was that testimonial the reason for the jump in the video? ;-)

@TannerTech 6 жыл бұрын

+Jake Bozz Yep. That carpet has a lot of holes now.

@jakebozz7677 6 жыл бұрын

Ha! Burns in the desk, holes in the carpet--Maybe we'd better start seeing a fire extinguisher on your desk. lol

@TitofBee 4 жыл бұрын

nice work

@boblebricoleur1776 5 жыл бұрын

You are incredible omg

@TheVedicWayChannel 7 жыл бұрын

Isn't that the exact same circuit used in mosquito zappers?

@TannerTech 7 жыл бұрын

+The Vedic Way No, those circuits use small one transistor oscillators and much smaller transformers, it is a much different circuit. They are not as heavy duty as my ZVS driver.

@readingdataintomyheadnothi7158 6 жыл бұрын

300ma only

@Mulazim. 4 жыл бұрын

@@TannerTech All those oscillators are unstable and the one which used in mosquitoes killer called BLOCKING OSCILLATOR,you can make it in too many ways,cause OSCILLATORS are more like Art than science...

@Creator_Veeto_PAEACP 3 жыл бұрын

“Grandma! What huge voltage you have!” “All the better to ground you, my dear.”

@TannerTech 3 жыл бұрын

Ok, this is pretty funny

@essaqamar 4 жыл бұрын

Can this circuit be used for electrostatic coatings applications. By adding a high voltage cascade to tame the current.

@RayceVR Жыл бұрын

8:55 40V AC*

@mechtronforce9063 2 жыл бұрын

12v works fine for mine, but 24v doesn't work, please do you know why? Thanks

@parthasarathimanna8790 4 жыл бұрын

Can I give 12V 15amp. Power supply from my computer SMPS , to drive this driver

@dbaznr Жыл бұрын

For 12V better make the primary with 3+3 turns

@mykedoes4099 Жыл бұрын

This circuit in this video only works with an AC source DC wont run it , correct me if I am wrong ty

@yuliyandp8308 5 жыл бұрын

Is the high voltage released can be controlled from 0 - 20kV (for example)? Maybe switching PWM from IC555 or Arduino?

@andrewel5383 5 жыл бұрын

Yeah you’ll need a mosfet driver like the tc4420 or ir21110 to drive the mosfets correctly with the 555 or arduino

@mP-zu8pw 5 жыл бұрын

good job ...

@ken_fb3678 2 жыл бұрын

Thats my desk 5 months in electrical engineering

@waterfuel Жыл бұрын

I have the ZVS open board coil heating unit model with bright top copper heatsink + top fan for 12v use. I need 200watts output to ONLY run a 30VAC transformer. 3 terminals on output. . The advertising says only 100watts. Can I reduce the choke coil L inductance for higher current going to the center tap of transformer ? Or should it be only larger capacitance than on the board that resonates with primary of transformer? ( 200W Inverter power supply needed.) This is called self excited type rather than the IC Oscillator driven type. The MOSFET switchers on board are fully capable. Low voltage output + high wattage Inverters are non purchasable and transformer has to be hand wound special. (already done with bifilar primary.)

@Mr11223marc 6 жыл бұрын

We can hear frequency of sector, what's the capacitance of DC cap? need to be higher i think

@kugelblitz640 3 жыл бұрын

hey can I use irf450 except irf250 I have couple of the laying around

@ReigoVilbiks 6 жыл бұрын

so zvs driver generates AC output to flyback ?

@___Chris___ 3 жыл бұрын

The parents of this kid must really understand the meaning of trust.

@TannerTech 3 жыл бұрын

That is why I got a fire extinguisher for Christmas once haha

@polymathscienceinventions7815 6 жыл бұрын

Hello, mate. I was wondering if you could show me how to connect the voltage multiplier to the zvs flyback driver. My voltage multiplier is negative not positive by the way. I mean, which side is connected to the HV red wire coming out of the flyback and which side is connected to the ground wire that in the back of the flyback. Finally, which side becomes the output of the two in the front of the voltage multiplier. Could you show some pics, showing it step by step which now one has ever done. you do connect the red hv wire to one of the two and then connect the flyback ground wire to the other on the left or right leaving one in the front to be the output, but which one. where do I connect the other output that suppose to be the common or ground is it the same connection as the flyback ground wire? Any way, your a blessing thanks for everything and keep up the projects. They are inspiring.

@JowmawmaHuh 6 жыл бұрын

Excellent work, young man .keep it up #sHOLDERzOFgiants

@garbleduser 6 жыл бұрын

How much inductance would you need to add to completely smooth those waveforms?

@DarrenDIY 7 жыл бұрын

nice one tan

@TannerTech 7 жыл бұрын

+Darren DIY Thanks!

@RayceVR Жыл бұрын

8:50 & 2:16 I don’t get it. With the 110 to 40V AC transformer you plug it into a full bridge rectifier. Now you have 40V DC. With that you use the midgets to switch on/off to simulate AC so that you can run it through the coils to step up the voltage with the 1000 turns? Why not just plug the 40V AC into the transformer step up with 1000 turns instead of making it go through the bridge rectifier and then made into AC via zvs again?

@RayceVR Жыл бұрын

Nvm it increases frequency lol

@phallusmare3931 3 жыл бұрын

You are a smart girl.

@EnergySeeker 4 жыл бұрын

why dont you make an AKULA , generating Electricity from static coils

@GhostsOfSparta 3 жыл бұрын

how to prevent both the mosfets from turning on at the same time? When I power on the circuit, if high voltage electrodes are not near enough then circuit doesn't oscillate and both mosfets turn on and max current flows and overheats mosfets. I mean how to make the circuit oscillate without the kickback from secondary?

@harms123 2 жыл бұрын

Difficult to say without more information about your circuit

@ryanblack3970 6 жыл бұрын

Can you make a more detailed step by step video on how to make this zvs fly back driver, I’m not very experienced with circuitry and wouldn’t be able to build this from this video

@owenkegg5608 3 жыл бұрын

If you aren't very experienced with circuitry please don't build a high voltage oscillating death machine of death.

@praveenroyce9242 4 жыл бұрын

What is the final output from the zvs flyback driver?

@ash0787 4 жыл бұрын

interesting, I am trying to assemble one of those tesla coil kits from china, I thought it might be helpful to know more about ZVS transformer as I have no experience with it. My assumption was initially that the top coil acts as a feedback mechanism so I was a little surprised to notice that it was not involved in the primary function of the circuit. Your 'workshop' is pretty cool, I don't really have that so I migrate between the garden, garage, front drive, kitchen table at different times. I would be worried about setting the house on fire if I had like yours, among other things. Do you solder indoors too ?

@owenkegg5608 3 жыл бұрын

You know there is such thing as a fume hood, right?

@owenkegg5608 3 жыл бұрын

Just use common sense with your iron and don't leave it plugged in like a dumbass

@polyblank73 Жыл бұрын

what type of capacitor do you use? x2?

@nejclipar Жыл бұрын

can this one be used for induction driving?

@sabamawlood3262 3 жыл бұрын

Hello, I applied your circuit to a simulation program, but the voltmeter did not read any value .. Is it a problem with the program or connected to the circuit ... I applied other circuits for the same purpose but the voltage appears to me very little

@TannerTech 3 жыл бұрын

This circuit will only work because the slight differences in components cause the oscillation to start. I would suggest modifying a few of the component values so the circuit is no longer symmetrical. Specifically, try changing one of the gate resistors by a few ohms. Let me know if that works!

@cahyopangestu3469 6 жыл бұрын

Can I use a 1N4007 for that or do I need a UF4007 ?

@mareksvrcina5279 5 жыл бұрын

CommnisZer CP i think 1n4007 is too slow.

@dbaznr Жыл бұрын

Try with a bigger capacitor i.e. 4uF to slow it down to about 10kHz

@vertox4837 6 жыл бұрын

Will that work for an induction heater?

@bolt_the_duck Жыл бұрын

Yeah, i actually voted for you!

@Texaca 6 жыл бұрын

Cool! You'll be the next Stephen Hawkins, if you keep it up. I can just image him doing stuff like this, at your age. Except, he was probably trying to build a TARDIS with kitchen appliances and old vacuum tube from TV sets, or trying to build a "trans-dimensional window" or Worm Hole to a parallel universe. 😃 ...like Walter Bishop. Just image, if you will, as something Rod Sterling might have said. Just don't become Dr Nefarious 😁 or Robert Mercer, or Peter Thiel, or an Alexander Nix 🤔 Only thing I had as a kid, was old Lego's and a HO train set, I had no idea where the nearest library was, while living in Houston

@jimmysyar889 4 жыл бұрын

Thunder Kunt you mean ALS?

@1e0_oki 5 жыл бұрын

Pls could you tell me what is the output voltage of the circuit without a step up transformer if the input voltage was 12volts Thanks alot

@mareksvrcina5279 5 жыл бұрын

From my own experience, I would estimate it to be around 10kV, but not sure. I was not able to measure it because the frequency is close to 20khz.

@Ittybittythetwofacedkitty 3 жыл бұрын

Could an electric fence transformer be used to power a flyback transformer?

@TannerTech 3 жыл бұрын

Not really, though you could probably use the transformer driver from the electric fence to power a flyback. It may not be very high powered though, so I would recommend just building your own driver.

@cheri758 4 жыл бұрын

Um you are looking like my friend when he was 12. But you are good guy.

@waterfuel Жыл бұрын

I!!! f ZVS has ferrite core in wire coil, with switch on, isn't the power draw very high without load attached to secondary of ferrite transformer? Idling mode-- waiting for the end load. A standard type switching inverter with transformer has idling mode, low power, waiting for the end load applied. People keep turning on + off power to their ZVS set up....///,,?

@ttvsoccer6032 5 жыл бұрын

So I was a kid and i loved to fix things

@matthewrobertson8824 5 жыл бұрын

How many amps does the circuit draw?

@venkateshg5186 5 жыл бұрын

ZVS fulform?

@morganchandler5126 6 жыл бұрын

can I use different power mosfets ......different but very similar specs

@MantisRay861 6 жыл бұрын

Yes you can

@morganchandler5126 6 жыл бұрын

I've had so much trouble building this thing

@morganchandler5126 6 жыл бұрын

I used cool mos mosfets

@Michael-oq2wx 3 жыл бұрын

What is the maximum voltage supply for this driver?

@TannerTech 3 жыл бұрын

Depends on components used. The Zener diodes limit the gate voltage to the FET's to 12v, so you can really raise it to 42+ volts. The FET's and resonant cap bank may be the limiting factor.

@Michael-oq2wx 3 жыл бұрын

@@TannerTech Thank you, you are rigrht, even I tried with 54 volts, it worked good. But when the coil in resonance the consomation is on maximum and back impuls too. There here no problems with 20+20 coil turns, but with 6+6 Iit burned out 2 devices.

@ED4action 7 жыл бұрын

I wonder what it would do if you used an arc welding rod instead of a screw driver and a piece of metal for the heat sink..? Probably make a nice weld..

@TannerTech 7 жыл бұрын

+ED4action It might, I'll have to try that. It might not have enough amperage to do that though. Arc welder supply a lot of amperage.

@ED4action 7 жыл бұрын

now i'm thinking it would work better welding aluminum using a small wire of it.. do you have any ideas what to do with the high voltage capacitors out of micro-waves..? ive got a bunch of them, and a bunch of magnatrons.

@owenkegg5608 3 жыл бұрын

@@ED4action Make a gun that microwaves bugs. Remember to bring your tinfoil hat!

@melplishka5978 3 жыл бұрын

Cool. But u should wear gloves and sun glasses. Also use a chicken stick instead of a screwdriver because at that voltage it will at some point jump thru the screwdriver into your hand. The sunglasses are so that the ultraviolet rays being created by the plasma sparks don’t burn your retinas lol. But great set up. Good work.

@TannerTech 3 жыл бұрын

Thanks Mel! I didn't have as much regard for safety when I made this video back then haha

@melplishka5978 3 жыл бұрын

@@TannerTech hahahahah none of us do lmfao.