This circuit works great on the flyback I have using a 250N mosfet However I tried winding my own HV transformers using the core from a SMPS transformer as well as using the core from a HV transformer from a computer monitor (unwinding the primary and rewinding using this same primary winding as in the video). I can't get the circuit to oscillate like it does with the flybacks I have. Any ideas why?
I will be using a IRFZ44N when I build mine. I do not have any 5 volt batteries or a fancy power supply. Can I use a six volt car battery to power this?
HI Ludic Science, may I know the current of the 10, 000V ? also may i know how long can the output voltage last? If the mosfet gets too hot, is there a work around?
what sort of thing can I pull a mosfet component from ? i see them in lots of stuff but not sure if the right ones, is there a component number on them or anything?
i'm thinking in use a flyback transformer to make a powder coating gun. which is the safest way to do it? i mean how a can limit the amps to the bare minimum in case of an accidental touch?! Thanks in advance!
Hi, I have two questions: 1- How can run this simple circuit with 12V battery? 2- How long I can run this circuit? I tried with CLF circuit but it is burned when I ran the spark for ~ 1 min. (Thank you)
I have a scratch start tig setup with an old miller thunderbolt 225 buzzbox. I'm going to try this contraption as an arc starter instead of scratch. Hope it don't cook the flyback circuit. Thanks for the presentation. Very simple and it looks easy.
I made this circuit and was running it on a dead lead acid battery (not fully charged but still had some power left) and the arcs were okay but not as good as yours. But then I tried my homemade PC lab power supply on 12 volt 20A and the mosfet actually desoldered its wires because of the heat. I think that adding a 10 - 50 ohm power resistor in series with this circuit will limit the current to a low level because this circuit is basically a short circuit. The circuit works with limited current but with an unregulated power supply it ends in flames!
can you make a circuit to protect the MOSFET from shorting cause it happen two times to me and I just hope that you got a simple solution for this problem
So tried running one of my flyback coil this configuration.. it works and even up to 12/24 volts max but that's having to change transistors after every run.. I tried intentionally to see how much I could push out of irf540& irf640 the results were unreal plasma arcs easily in 50k+ range.. very cool circuit and lots of fun. Thanks
The scheme in the video is not good for mosfet trans. For blocking-generator preferably using simple npn/pnp high voltage transistor, scheme with resistor volt divider is better. But if you want to use mosfet, and zvs driver is too hard to repeat, i could suggest royer oscillator, like this video m.ruclips.net/video/sKpyg9EQf6w/видео.html (11:00)
I found a z44 got it to work but my arc is much smaller. My flyback is smaller then yours that could be why? I also tried 8, 10 and 30 volts but none of those even worked. Only on 5.5 volts.. Any way I can tweek it to get a little larger arc? At Least the same as yours? Mine is only less then half of yours. Thank you.
OK I got it by shorting out two additional pins. Much better arc about the size you had and I can hear it now. It burns paper. I still want to try cranking it up some more :)
Thank you so much it worked first try but it literally exploded my low power 12V supply :-( is the return that bad and powerful? how can I prevent it from happening again? Thank you for any response
Erick Lopes This sounds like a great idea but in my head I can’t get around it I don’t suppose you could make a video or shows the photo diagram online could you please ? 👍🏻🤓🤓
Paul Freeman And Paul , I don’t suppose you could do the same for us as well could you make A video or photo graph of a diagram schematic to share with us could you ? I would really like to try out both of your ideas !👍🏻🍻
Thank you so much. I have a small flyback transformer than yours. And I used MOSFET IRF 3203. And I don't have a 220 ohm resistor so I used a 10k potentiometer. The circuit worked. And whenever I turned the circuit on it made a loud high frequency sound. Is this because I used enamelled copper wire ?
Hello Tomosaki, mount your mosfet on a very large heatsink and cool the heatsink with a fan. I am not certain, but it looks like Mr. Ludic's power supply may be reading nearly 5 volts at almost 5 amps or close to 25 watts.
ur so amazing ..... works well with 220 ohms and IRF740 also but ark is so little .... i think it's because of the MOSFET frequency ...... i'm searching for the IRF44 can you tell me from where i can unplug it
I * R = E Or amps x Resistance = Voltage. So if with an input of 12v and 1amp.... 12/20,000v = 0.0006amps that would be at perfect efficiency which this thing is not.... so like a fraction of that. Still, this stuff can be very dangerous. Troubleshooting and designing a thing like this you really dont know output till you meter it out a lot.
it also works perfectly with transistor NPN 2N3055 just use 320R resistor to Base. Same connections base (instead of mosfet Gate), Collector (instead of mosfet drain) and emitter (instead of mosfet source) i take arcs of about 15mm with 8Volts supply. The amperage that this experiment (try it for 2-3 seconds and stop or you will fry the flyback and your cables) requires is huge 4Amps+ so its better if you dont have a 10A power supply to use 2X18650 batteries in series. If you find problem like the flyback buzzing high frequency and no arc, reverse the cables going to the outer coils you winded. If on the one end you connected the + and on the other feedback to gate or transistor base, reverse these and flyback will give arc.
Thanks for this dead simple circuit! I recently bought a set of nine old flybacks from eBay for a good price. Until now I tried a 12V electronic lamp transformer and a ZVS + bridge rectifier + variac. ZVS works best of course (destroyed two flybacks @ 36 volts input!). Any idea what current (mA) flyback produces at 5 - 36 volts? How dangerous is accidently touching the live wire?
newer flybacks have builtin diodes but no filtering so under load its pulsed DC making it useless for jacobs ladders or plasma globes but you can find some with ac output on ebay. the frequency is usually beyond 10khz which results in a very high pitched or even inaudible sound. as long as the current is low like when using a simple driver like that, its safe but painful to touch, but powerful drivers like zvs can defenetly make it lethal.
@@Chuckiele I’m trying to figure it out if this output pulsed dc we have from diodes in the newer flyback is an full wave rectified or half wave rectified. Do you know please??
i have tried this exact set up with no results. tried with two different flybacks and two different IRFZ44 mosfets, and still nothing. my power supply preset to 12 drops down to 2 volts as soon as the circuit is connected, and no output from the flyback at all. what am i doing wrong? how can i fix it and get this working? i seem to have no end of troubles with driving flybacks and have a ton of projects that need the high voltage. hope someone here can help.
May I ask an honest question? Is there anything more useful to build using these high voltage Flyback transformers from old CRT TV's? I've seen lots of videos about the typical novelty HV stuff like a Tesla coil or Jacob's ladder, but those are not practical or useful beyond a few minutes of "that's interesting" from none hobbyist friends. I have no reason to build high voltage tube equipment or lights. I have a few of these in my junk drawer and a couple still attached to PCBs. Is there anything practical to use them for on the work bench, in the lab, or are they taking up valuable junk drawer real estate for nothing? -Jake
Recently i'm trying to make a compact flyback driver (maybe based on its originals inner coils) as a power supply for a portable microwave gun. however you can use a flyback to charge high voltage capacitors, to produce ozone and NO2, to perform dangerouse special effects, to zap electronic stuff, or just to say: "My driver is bigger than yours!". By the way, there are many useful components to tear apart from a TV: like the integrated audio amplifier, the deflection coils, the switched mode power supply, transistors and lots of high voltage caps. good luck!
PolloDiPallude94 Oh yeah. I use lots of stuff from old TV's. Don't forget the most basic stuff, like linear regulators, wire wound power resistors, lots of zener diodes, precision radio components, Infrared receiver diode, high current NPN transistors, general purpose NPN and PNP transistors, and even some high precision resistors on some PCB designs. If your just looking for components, the power supply contains a precision voltage Reference (usually TL431A@1%), an optocoupler, at least 1 shocky diode, a peak mode DC to DC converter, a fuse, old and questionable low ESR capacitors, a relay, and a high current recrifier or diode bridge rectifier. One of the most neglected resources are the connectors and wiring. The deflection yoke is my favorite place to find large quantities of reusable enamelled copper wire, if the yokes are painstakingly unwound. When combined with a large transformer core (like from an old microwave), this could be one of the few combinations to yield a free isolation transformer for the poor folks like myself. Eventually I hope to do a few videos on salvaging modules from old PCBs like TV's. Although I need to figure out a fool proof method to disconnect the high voltage CRT supply circuit first. Checking all of the HV caps, then desoldering them is a start. Anyone with a basic iron can remove caps easily. The only question is whether this will completely disconnect the HV generation on every design. I haven't looked into how the HV is generated in detail. Removing the flyback transformer could be challenging to an over-zealous novice. I'm not comfortable telling (showing) someone to cut copper traces, as their diligence comes into play. If a person has the ability to power the whole PCB without the danger of the HV circuit, TV's are usually laid out in a very modular fashion. This makes it easy to test and determine what parts work with what circuit instead of removing all useful components, finding a datasheet, then building a prototype circuit as is more common practice. A simple hacksaw can yield a power supply that often consists of multiple polarities/voltages, an audio power circuit, and an audio preamp. I'm sure that TV's also have some circuit protection components. I haven't gone through any PCB's in detail looking for them but I want to do a video about salvaging transient voltage protection circuits as this seems to be an area without much intuitive information on the web....maybe I'll get to it in the future after the current project... anyone is welcome to take my ramblings and make some content... I'm a slow partially disabled gimp that's just having fun I have dozens of ideas for videos but am too slow to get to them quickly enough. I'm just here for the community and to learn ;) -Jake
Yes, even a flyback coil generating corona and sparks that were near, not touching, a high voltage capacitor can charge them over the air. Once I had a 2000v 0.15uF capacitor on the table near my running flyback. When I picked up the cap, I got a shock! It was a painful lesson
If you do si you decrease the resonance frequency. Since the flyback is designed for really high frequency, the arcs will get smaller as the secondary gets less power from the primary. It might not even create any spark at all. These circuits depend alot on the compatible of the flyback and transistor used. Other wise you have to add additional components to get it working
@@raloed.363 mine is running well off the internal primary. Takes a bit of experimenting to find the right windings and drive polarity. I also added a 0.022uF capacitor across the primary to set the frequency at 15kHz. Draws about an amp at 12v and inch long arcs so my bench power supply is happy driving it. I ended up using a MJE15035 transistor bolted to an old CPU fan heatsink.
Yeah that's what I mean by compatibility. Sometimes you have to be trying different components and windings to get it work. I Am currently working on getting a cfl circuit to work with a flyback. How much turns did you use for your trigger coil?
Hi, just need a little help. Instead of generating an arc, the power transistor heats up instead, and no arc is generated in the transformer. Can anyone tell me why did that happened?
Mr Ludic....Could a small tesla coil be built using this circuit? I also wonder if the heat & spark arcing would be reduced by placing everything under mineral oil?
1. Is an insulator required between the mosfet & the heat sink?2. Instead of the flyback transformer, can this circuit be used with an ignition transformer?
I used a larger N gate and built its own power supply roughly 6-8 volts I was changing the power line from non grounded to a grounded even though the power was off I picked up the coil and got one hell of a shock from the exposed pins I would recommend cutting the unused pins and insulating them I used hot glue for this
if tryed it with one of my mosfets and it works perfect thank you for your great tutorial videos! btw are those flybacks somewhere else too than in tvs and plasma lamps?
Thanks, i did it with 90n20 mosfet, 186ohm resistor, and i power it up with 24v from 2 car batteries, using 2 halogen light bulbs in series. It generetes more than a 100kv when halogen are cold, but when they light up brighter, it produslces arround 60kv. Thanm you very much
Наука
Tried it and it works with most power transistors found inside the TV circuit.
This circuit works great on the flyback I have using a 250N mosfet However I tried winding my own HV transformers using the core from a SMPS transformer as well as using the core from a HV transformer from a computer monitor (unwinding the primary and rewinding using this same primary winding as in the video). I can't get the circuit to oscillate like it does with the flybacks I have. Any ideas why?
I will be using a IRFZ44N when I build mine. I do not have any 5 volt batteries or a fancy power supply. Can I use a six volt car battery to power this?
All day looking at diff circuits but yours def works, used a IRF3205. How does the centre tap work/ is this for feedback?
HI Ludic Science, may I know the current of the 10, 000V ? also may i know how long can the output voltage last? If the mosfet gets too hot, is there a work around?
what sort of thing can I pull a mosfet component from ? i see them in lots of stuff but not sure if the right ones, is there a component number on them or anything?
thank you soo much, it worked right away. i used to be skeptical about your tesla coil things, but now i trust you completely
Thanks, all my projects work as shown, some may be tricky to set up but all are real.
What can it, and what can't it power pls?
yup thank you too it worked,but other transformer
Another excellent video. Thank you very much!
i'm thinking in use a flyback transformer to make a powder coating gun. which is the safest way to do it? i mean how a can limit the amps to the bare minimum in case of an accidental touch?! Thanks in advance!
what other MOSFETs can be used if you don't have any z44s?
Hi, I have two questions: 1- How can run this simple circuit with 12V battery? 2- How long I can run this circuit? I tried with CLF circuit but it is burned when I ran the spark for ~ 1 min. (Thank you)
what if it dies not produce high arching voltage? does it mean that the FBT is defective?
I have a scratch start tig setup with an old miller thunderbolt 225 buzzbox. I'm going to try this contraption as an arc starter instead of scratch. Hope it don't cook the flyback circuit. Thanks for the presentation. Very simple and it looks easy.
How did it work?
Thank you for another very good and useful video.
Sir you have explained it perfectly
hi sir, why this circuit not working for me? I use flyback bsc25 602f, 100 ohm, irfz44n, power input 12 v 3a
Can it be done with a K2610 - I got it from a Toshiba CRT TV
I made this circuit and was running it on a dead lead acid battery (not fully charged but still had some power left) and the arcs were okay but not as good as yours. But then I tried my homemade PC lab power supply on 12 volt 20A and the mosfet actually desoldered its wires because of the heat. I think that adding a 10 - 50 ohm power resistor in series with this circuit will limit the current to a low level because this circuit is basically a short circuit. The circuit works with limited current but with an unregulated power supply it ends in flames!
can you make a circuit to protect the MOSFET from shorting cause it happen two times to me and I just hope that you got a simple solution for this problem
Is it used as a electric fence energier with flasher relay
will Irf630 works on this project?
Hello !
Can an use an TIP 35C or TIP 32C, or an 2N2222A ?
Can you use any power mosfet on this circuit?
Is it used in homemade electric fence like ignation coil
I have questions can I use 240 ohm resistor?
Hi! I have a question. Why it's used an AC current input to the Flyback's core instead of using a DC pulsed current? What's the difference?
Flyback is a kind of transformer and transformers only work with ac
Sir if by making this I don't do soldring or direct connection than it will work or not please repley
So tried running one of my flyback coil this configuration.. it works and even up to 12/24 volts max but that's having to change transistors after every run.. I tried intentionally to see how much I could push out of irf540& irf640 the results were unreal plasma arcs easily in 50k+ range.. very cool circuit and lots of fun. Thanks
The scheme in the video is not good for mosfet trans. For blocking-generator preferably using simple npn/pnp high voltage transistor, scheme with resistor volt divider is better. But if you want to use mosfet, and zvs driver is too hard to repeat, i could suggest royer oscillator, like this video m.ruclips.net/video/sKpyg9EQf6w/видео.html (11:00)
@alekseyivanov7230 these pop mosfets like crazy
I found a z44 got it to work but my arc is much smaller. My flyback is smaller then yours that could be why? I also tried 8, 10 and 30 volts but none of those even worked. Only on 5.5 volts.. Any way I can tweek it to get a little larger arc? At Least the same as yours? Mine is only less then half of yours. Thank you.
OK I got it by shorting out two additional pins. Much better arc about the size you had and I can hear it now. It burns paper. I still want to try cranking it up some more :)
Congrats. Ask me one thing. Can i use the flay back as a negative ion generator To flocking Gi Joe Heads ?
Thank you so much it worked first try
but it literally exploded my low power 12V supply :-( is the return that bad and powerful? how can I prevent it from happening again? Thank you for any response
You should see if there's a way to modulate the amplitude with an audio input.
Add a transformer in series with the power supply, then connect the loudspeaker output to the other coil of the transformer.
I guess you could add a mosfet driver and turn it on and off based on the audio signal from Arduino
Erick Lopes This sounds like a great idea but in my head I can’t get around it I don’t suppose you could make a video or shows the photo diagram online could you please ? 👍🏻🤓🤓
Paul Freeman And Paul , I don’t suppose you could do the same for us as well could you make A video or photo graph of a diagram schematic to share with us could you ?
I would really like to try out both of your ideas !👍🏻🍻
what is the value of resistor on gate ? / Quelle est la valeur de la résistance sur la "gate" du transistor ?
How long you can keep it work??
can i use transistor insted mosfet?
Isn't this tge same configuration as in you video "high voltage joule thief" where you used a 2N3055 mosfet
Where can you find a fly back core
it s need to oscillator for drive the mosfet?
Thank you so much. I have a small flyback transformer than yours. And I used MOSFET IRF 3203. And I don't have a 220 ohm resistor so I used a 10k potentiometer. The circuit worked. And whenever I turned the circuit on it made a loud high frequency sound. Is this because I used enamelled copper wire ?
Its probably becouse you used a potenciometer
What happens if you connect 24VAC/50Hz to primary winding? Without any circuit.
not much they need higher frequenzy
I made it using irfz48n mosfet.. and it works thank you!
What value is the resistor?
Can i add capacitor between middle mosfet pin and loop
yes and it will make the spark better
What is the frequency of this oscillator?
Can i use any kind of mosfet?
no zener diode to protect the gate of mosfet ????
What kind of transformer did you use for this spark-generator project ?
+Dad flyback
best of the best thanks
Hello Tomosaki, mount your mosfet on a very large heatsink and cool the heatsink with a fan. I am not certain, but it looks like Mr. Ludic's power supply may be reading nearly 5 volts at almost 5 amps or close to 25 watts.
No me funcionó y lo conecté así, puede ser q este dañado el fly-back?
El mosfet se calienta mucho
Will 2sc5902 work?
can i replace the resistor with one from another? value if yes which
anything in the neighborhood of 200ohm should be fine.
Is it possible to make a Jacob's ladder with it?
My other drivers could not create enough hot arcs OR high enough voltage to work.
Did you try building a ZVS driver? Its one of the most efficient drivers for a flyback that produces the longest and fieriest arcs
If you still can't, try bringing the rods closer together at the bottom, or put in more power into the circuit
I'm currently using Eirik's driver with 12-24V input, but it's not fine-tuned yet
I'll build a ZVS driver soon
ur so amazing ..... works well with 220 ohms and IRF740 also but ark is so little .... i think it's because of the MOSFET frequency ...... i'm searching for the IRF44 can you tell me from where i can unplug it
Can i use any MOSFET of i dont have yours?
Is the input ac or dc?
very nice circuit
oh how badly i wanted one of these as a kid
The first video from you that I could understand, nice!
We know voltage is around 10kv to 20 kv but, What is output current of color TV flyback transformer? Which gives 20kv.
Any value, approximate range?
I * R = E
Or amps x Resistance = Voltage. So if with an input of 12v and 1amp.... 12/20,000v = 0.0006amps that would be at perfect efficiency which this thing is not.... so like a fraction of that. Still, this stuff can be very dangerous. Troubleshooting and designing a thing like this you really dont know output till you meter it out a lot.
Works very good i used 39ohm 5W resistor and a random mosfet from a old pc power supply ...about 1,5 cm long arc :)
how much resistanxe?
when i connect it with 12 volts its mosfet is burnt in 2-3 seconde please give me solution to solve it
it also works perfectly with transistor NPN 2N3055 just use 320R resistor to Base. Same connections base (instead of mosfet Gate), Collector (instead of mosfet drain) and emitter (instead of mosfet source) i take arcs of about 15mm with 8Volts supply. The amperage that this experiment (try it for 2-3 seconds and stop or you will fry the flyback and your cables) requires is huge 4Amps+ so its better if you dont have a 10A power supply to use 2X18650 batteries in series. If you find problem like the flyback buzzing high frequency and no arc, reverse the cables going to the outer coils you winded. If on the one end you connected the + and on the other feedback to gate or transistor base, reverse these and flyback will give arc.
What type of mosfet is that
Can i use irf840?
just try it and it works very good teacher
I'm using irfz24n I supply it with 5v 5amps it's working but I want more so my question is "can I supply with 12vdc? or not?
Yes, just make sure to use a heat sink.
Which mosfet and resistor is used in this project?what is the current requirement?
Debopriyo Nandi watch the fucking video dumb ass
Thanks for this dead simple circuit! I recently bought a set of nine old flybacks from eBay for a good price.
Until now I tried a 12V electronic lamp transformer and a ZVS + bridge rectifier + variac. ZVS works best of course (destroyed two flybacks @ 36 volts input!).
Any idea what current (mA) flyback produces at 5 - 36 volts? How dangerous is accidently touching the live wire?
I don't know about the current but the zvs driver can kill you
so you don't even need to connect the original transformer to power?
whats the frequency of the driver ? and isnt a CRT HV PS supposed to supply HV DC ??! Is there a diode somewhere in this transformer thingy ?
newer flybacks have builtin diodes but no filtering so under load its pulsed DC making it useless for jacobs ladders or plasma globes but you can find some with ac output on ebay. the frequency is usually beyond 10khz which results in a very high pitched or even inaudible sound. as long as the current is low like when using a simple driver like that, its safe but painful to touch, but powerful drivers like zvs can defenetly make it lethal.
@@Chuckiele I’m trying to figure it out if this output pulsed dc we have from diodes in the newer flyback is an full wave rectified or half wave rectified. Do you know please??
@@pasqualemasullo6844 halfwave.
my frind i have find one flyback on the dump i would like to try but i scare how to wiring
Will it work with a AA1,5V battery?
no
i have tried this exact set up with no results. tried with two different flybacks and two different IRFZ44 mosfets, and still nothing. my power supply preset to 12 drops down to 2 volts as soon as the circuit is connected, and no output from the flyback at all. what am i doing wrong? how can i fix it and get this working? i seem to have no end of troubles with driving flybacks and have a ton of projects that need the high voltage. hope someone here can help.
At 12v you butn the mosfet.
Brilliant ! Thanks🇬🇧
Wat type of resistor is it
What is the max voltage for mosfet IRFZ44/IRF3205 ?
4 volts
May I ask an honest question? Is there anything more useful to build using these high voltage Flyback transformers from old CRT TV's? I've seen lots of videos about the typical novelty HV stuff like a Tesla coil or Jacob's ladder, but those are not practical or useful beyond a few minutes of "that's interesting" from none hobbyist friends. I have no reason to build high voltage tube equipment or lights. I have a few of these in my junk drawer and a couple still attached to PCBs. Is there anything practical to use them for on the work bench, in the lab, or are they taking up valuable junk drawer real estate for nothing?
-Jake
AFAIK i don't think you can use flybacks for anything else.
Mr Ludic: What is the FREQUENCY of this circuit? [thank you]
Recently i'm trying to make a compact flyback driver (maybe based on its originals inner coils) as a power supply for a portable microwave gun. however you can use a flyback to charge high voltage capacitors, to produce ozone and NO2, to perform dangerouse special effects, to zap electronic stuff, or just to say: "My driver is bigger than yours!".
By the way, there are many useful components to tear apart from a TV: like the integrated audio amplifier, the deflection coils, the switched mode power supply, transistors and lots of high voltage caps. good luck!
PolloDiPallude94
Oh yeah. I use lots of stuff from old TV's. Don't forget the most basic stuff, like linear regulators, wire wound power resistors, lots of zener diodes, precision radio components, Infrared receiver diode, high current NPN transistors, general purpose NPN and PNP transistors, and even some high precision resistors on some PCB designs. If your just looking for components, the power supply contains a precision voltage Reference (usually TL431A@1%), an optocoupler, at least 1 shocky diode, a peak mode DC to DC converter, a fuse, old and questionable low ESR capacitors, a relay, and a high current recrifier or diode bridge rectifier. One of the most neglected resources are the connectors and wiring. The deflection yoke is my favorite place to find large quantities of reusable enamelled copper wire, if the yokes are painstakingly unwound. When combined with a large transformer core (like from an old microwave), this could be one of the few combinations to yield a free isolation transformer for the poor folks like myself.
Eventually I hope to do a few videos on salvaging modules from old PCBs like TV's. Although I need to figure out a fool proof method to disconnect the high voltage CRT supply circuit first. Checking all of the HV caps, then desoldering them is a start. Anyone with a basic iron can remove caps easily. The only question is whether this will completely disconnect the HV generation on every design. I haven't looked into how the HV is generated in detail. Removing the flyback transformer could be challenging to an over-zealous novice. I'm not comfortable telling (showing) someone to cut copper traces, as their diligence comes into play. If a person has the ability to power the whole PCB without the danger of the HV circuit, TV's are usually laid out in a very modular fashion. This makes it easy to test and determine what parts work with what circuit instead of removing all useful components, finding a datasheet, then building a prototype circuit as is more common practice. A simple hacksaw can yield a power supply that often consists of multiple polarities/voltages, an audio power circuit, and an audio preamp.
I'm sure that TV's also have some circuit protection components. I haven't gone through any PCB's in detail looking for them but I want to do a video about salvaging transient voltage protection circuits as this seems to be an area without much intuitive information on the web....maybe I'll get to it in the future after the current project... anyone is welcome to take my ramblings and make some content... I'm a slow partially disabled gimp that's just having fun I have dozens of ideas for videos but am too slow to get to them quickly enough. I'm just here for the community and to learn ;)
-Jake
Yes, even a flyback coil generating corona and sparks that were near, not touching, a high voltage capacitor can charge them over the air. Once I had a 2000v 0.15uF capacitor on the table near my running flyback. When I picked up the cap, I got a shock! It was a painful lesson
I guess the mosfet burns out regularly especially if you dont have some 12v zener protecting the gate from overvolting
@@spody1005 its placed to prevent voltage overshoots above 15v on the gate.
Nobody cares about the current
@@spody1005 cathode goes to the gate and anode to the source. it MUST be a zener
@@spody1005 as long as its cooled properly its infinite.
The current consumption is very high. Is it possible to add more turns to the primary and run it at a lower current (maybe using a higher voltage)?
If you do si you decrease the resonance frequency. Since the flyback is designed for really high frequency, the arcs will get smaller as the secondary gets less power from the primary. It might not even create any spark at all. These circuits depend alot on the compatible of the flyback and transistor used. Other wise you have to add additional components to get it working
@@raloed.363 mine is running well off the internal primary. Takes a bit of experimenting to find the right windings and drive polarity. I also added a 0.022uF capacitor across the primary to set the frequency at 15kHz. Draws about an amp at 12v and inch long arcs so my bench power supply is happy driving it. I ended up using a MJE15035 transistor bolted to an old CPU fan heatsink.
Yeah that's what I mean by compatibility. Sometimes you have to be trying different components and windings to get it work. I Am currently working on getting a cfl circuit to work with a flyback. How much turns did you use for your trigger coil?
@@raloed.363 trigger coil? I found I could drive a 4ft fluorescent tube straight from the flyback output
@@ianhosier4042 yeah the trigger coil is the coil that connects to the base of the transistor. Otherwise known as the feedback coil
yes that it is what waiting for
How long it's work continuously
Hi, just need a little help. Instead of generating an arc, the power transistor heats up instead, and no arc is generated in the transformer. Can anyone tell me why did that happened?
hay did u resolve this ,?
Mr Ludic....Could a small tesla coil be built using this circuit? I also wonder if the heat & spark arcing would be reduced by placing everything under mineral oil?
+Dan Druff yes to both questions
1. Is an insulator required between the mosfet & the heat sink?2. Instead of the flyback transformer, can this circuit be used with an ignition transformer?
It work with transistor npn or pnp
I used a larger N gate and built its own power supply roughly 6-8 volts I was changing the power line from non grounded to a grounded even though the power was off I picked up the coil and got one hell of a shock from the exposed pins I would recommend cutting the unused pins and insulating them I used hot glue for this
Good thing you’re ok man. Discharge them again and again just to be safe!
What frequency is it oscillating at?
30to 40kHz
Thanks brother perfectly explained 👍
The circuit won't work if the transistor and flyback is not compatible to give the correct resonant frequency.
IRFP460 Is Work?
What kind of output it is. Is it is AC or DC I want to use it for solid state Tesla coil please someone give reply I really need help on this plzz
It should be dc output, because flyback is being driven with pulsed dc
if tryed it with one of my mosfets and it works perfect thank you for your great tutorial videos! btw are those flybacks somewhere else too than in tvs and plasma lamps?
Tv and monitor for old computers
just thought you would like to know that it did work with IGBT
Thanks!
Thanks, i did it with 90n20 mosfet, 186ohm resistor, and i power it up with 24v from 2 car batteries, using 2 halogen light bulbs in series. It generetes more than a 100kv when halogen are cold, but when they light up brighter, it produslces arround 60kv. Thanm you very much
It works really fine! You're genius! Simple and nice. :)
Thanks
can a ibgt be used in the same way
not sure
well I guess ill give it a try ......
Wire diameter?
Sir can I use it for solid state Tesla coil. I really need help and I am waiting for your reply thank you 😃
yes if if it has a dc output which most modern flybacks have
J
If you put a metal in center of arc will it shock?
no
I've actually touched it on accident and was amazed that it doesn't shock you at all, it burns a little but that's it.
Can use transistor tip3055