I learned to draw electronic circuits when there where no computers. I still draw mostly by hand. Drawing a circuit by hand gives you a better understanding of it. I encourage my children to write everything down. It's also very good for developing eye hand coordination.
I built this circuit and would like to share some details that will help you . 1) Select polypropylene capacitors for lowest loss. It is bettter to use many smaller capacitors in parallel rather than a few bigger ones. 2) The circulating current in the tank circuit is very high; it is multiplied by the Q factor. Q factor is determined by tank losses. The circulating current is roughly equal to the measured circuit current draw multiplied by the Q. For example if the current draw is 5 A., and the tank Q is 50, the circulating current could be 250 amps. This is why the coil and the resonating capacitor gets so hot so quickly. By using many smaller capacitors in parallel you distribute this current so that no one capacitor will be subject to huge currents. 3) The voltage across the capacitor is roughly 2 pi times the supply voltage. Select capacitors with a voltage rating about 10 times the supply voltage. 4) Two critical ratings of the mosfets are: 1) the drain-source breakdown voltage. Each mosfet will be subject to a voltage of roughly pi times the supply voltage. The mosfets should have a voltage rating of at least 4 times the supply voltage. 2) Drain source current rating which should be calculated from the desired wattage of your circuit. In addition, the drain-source resistance should be a low as possible in order to minimize the head dissipated by the mosfets, and also to maximize the potential power available from a given supply voltage. Along with zener diodes to protect the gate of mosfet, it is recommended to place a small resistor (10 ohms is good) in series with the gate to damp out ringing which can subject the gates to excessive voltage. The gate of a mosfet is quite fragile, and should not be subject to greater than about 20 volts. 12 or fifteen volt zener diodes are recommended...... I hope that this helps experimenters with this useful circuit, and thanks to GreatScott for the excellent video presentation.
This is a great piece of information. Adding capacitors in parallel might help reduce heat/load on the capacitors itself. How could one reduce the heat of the coil without a fan, or pumping water through it? I have tried to mess around with the windings but is not effective in keeping the coil cool. Your help would be appreciated. Someone has suggested that a thicker copper wire should decrease the temperature of the coil.
I also wanted to ask you about that ... what do you mean by constant current source ?, aren't they just a high-frequency choke to prevent oscillations from coupling back to the supply
A cool idea would be to make an induction heating probe that was driven through a flexible cable. That would be very useful for soldering plated iron standoffs onto pcbs.
UA-cam changed its recommended video algorithm and I would say nearly everyone has had the hot knife videos in their recommended tab leading to a huge spike in views/subscribers.
When removing enamel from copper wire, first burn it off using a lighter or something. It will come of really easily. On some thin wires, using sandpaper will risk breaking it.
Chlorine together with Carbon and heat, at least open flame, produces Phosgene gas, (any one who has worked CFC air con. have come across it), and that is really toxic.
Salutations @@Krytern, The Magnificent & Omnipotent Egzoset has heard the news before indeed, about "it works" and the rest. Have you ever heard of these solid references generally rejected/ignored by objectors? For example: www.pupman.com/current/vladi/vladmap.htm Mazzilli Vladimiro's Tesla Coil images www.pupman.com/current/vladi/vladi4.jpg i.postimg.cc/9QyzFx99/Pupman-Vladimiro-Mazzilli-Milano-Italia-MOSFET-driven-Tesla-Coil-480x400.png Just in case one may feel anything remotely interested, some of the rest awaits out there: www.reddit.com/r/inductionheaters/comments/j5la0d/where_to_buy_induction_heater_for_diy_project_eu/ Where to buy induction heater for DIY Project EU / Switzerland Good day, have fun.
Thanks! A couple years ago when I was 10 I saw this video and went to the local electronics shop and built the exact thing just from looking at the way you did half the parts where from scrap items and ended up using it till I moved house
Agreed, there's alot a baloney when it comes to Mazzilli's so called simili "ZVS" topology applied to IH drivers - which typical lemming mystifiers are now satisfied to refer to as a magical "DNA" (...) despite the simple fact that removal of a flux concentration core in Mazzilli's Flyback Transformer can't reasonably be expected to work just the same as when he got photographed besides his Tesla Coil work, in 2008 ~ 2009... So, over a full decade has passed and yet today's fanboy tactics are being used to manipulate vulnerable people using half-lies and plain omissions. All of this just to revalorize obsolete PCBoards with ZERO protection, in an attempt to deny/ignore true technological advance in favour of getting delusional over IH Drivers supposed to cost less than a month's worth of pizza delivery i guess! Ah, and of course you never get to be shown any realistic Gate Waveform signals, much less in relation to their resulting output, as if the Mazzilli topology never inspired serious papers in superior institutions of knowledge before, for example: docplayer.net/26964431-High-voltage-resonant-self-tracking-current-fed-converter-a-thesis-presented-to-the-faculty-of-california-polytechnic-state-university.html High voltage resonant self-tracking current-fed converter (2010-Mar) p52/152 - Mazzilli Converter Topology Here we must forget about frequency vs alloy optimization, never heard of semiconductor junction recovery charges, nor parasitic resonances and so on!! As if electronic design has become just another excuse to justify the one other hobby that gathers the followers around some "social" love-to-hate activity instead - totally unable to dialog via relevant arguments, not to mention i got quite successful on Reddit illustrating such mediocrity in all its virtual glory... Much like the rationale behind half of USA still standing behind Trump even today, e.g. throwing a dice would easily beat such type of "science" that they claim to "work" (until it fails, then a deafening silence covers their few voids), while in fact nothing is ever done to prevent a catastrophic forbiden condition as "Shoot-Through" in the 1st place: imagine, these days an electronic breaker is supposed to take over but only after the short-circuit has started - and we're talking about very serious current being involved nonetheless. Go figure where's the FuckCombustion NASA engineers!... Please revisit in 5 or 10 or 15 years, if possible.
In addition to the differences in resistance and magnetic susceptibility, different material also have different specific heat values. Aluminum, for example, has a much higher specific heat than iron or copper, steel, titanium and is about 7X that of Tungsten. So, it takes more energy/heat to raise a gram of Aluminim than for many other metals.
I usually avoid videos like this , but I figure this can't be one where things are heated, and just a lot if playing around, like the videos where they build fly backs, and make arcs the whole video, but this is much better, great video Mr Scott!!!
The best demonstration of the phenomenon that exists on youtube. You showed the results with different materials in a very simple but useful way.The little knife is just the appetizer. Congratulations.
Hi I have a question ,I hope find answers? Many other youtubers did this experiment but after few minutes the circuit got broken. Why ??? What do you think the reason?
I am working with my 7 year old son on electro magnetic experiments. He also observed the change in heat when we used a thick iron screw as a core. However, my equipment is really scrappy and I am missing a lot of what you might have at your disposal. Do you have a recommendation for equipment that you’d see as a minimum necessary to produce repeatable results?
All of these induction videos have such small coils, I would like to see one large enough and powerful enough to be used for recycling purposes such as being able to pass an aluminum can through the coil and powerful enough to melt extruded aluminum such as window frames and even able to melt brass.
to do that you need "transistors" the size of a pack of cigarettes, something that can handle 1200 volts and 800 amps, maybe something like the MGQQ400Q1US11 by Toshiba
If we want to convert this to an induction cooker what changes should we do. Point is when u put any ferromagnetic material inside the coil it heated up as inside the coil and inside the coil magnetic field is very strong . but near to its opening it should work good and produce proper heat . what changes should I need to use it as induction cooker , do I need larger coils (obviously). and put small utensil inside it for efficient heating .
Once you collect a few tools and supplies and start scavenging through old electronics. You put them together and blow up tons of circuits. Then you finally make something that works. You can't figure this stuff out without letting the pixies loose. You learn more from your mistakes. Go let the smoke out of something.
is the mug made of metal? Induction heating only works on metals, not ceramic. Though I agree, I don't like the hot knife videos. They are absolutely boring.
You could make it just like he did but you'd have to make the coil larger than the mug so it'll fit. Plu you'd have to remember that the coil is heating the MUG which is in turn heating the liquid, so be careful and don't burn yourself.
I don't know if I can help as far as the math goes, but I have about 3 industrial induction heaters that we use for drop forging. the coils are really large and it seems that inductance of the coil (AKA the diameter) has no effect on it. however, the coils are made of a copper tube so that water can flow through them to keep it cool. therefore, I would recommend you use a thicker gauge wire to let the resistance of the heating coil.
Iron (steel) 26-Fe, Cobalt 27-Co, Niken 28-Ni: They are in the Iron-magnetic group. the Foucault current (AC) will make them be hot (the ingot or bar form of those materials is easily to transfer heat)
4:35 The word is Hysteresis or magnetic resistance. When a ferromagnetic material is magnetized in one direction, it will not relax back to zero magnetization when the imposed magnetizing field is removed.
Hi, I am not good at electricity and I have a question, please respond. I used an induction heater to heat magnetic materials. The input of the induction heater was DC 24V 15A and it could well heat magnetic materials. However, as i know, only an alternating magnetic field (generated from AC voltage) can heat magnetic materials, so how could my induction heater (using DC voltage as input power) heat magnetic materials?
can you pls make switching mode inverter 12v to 220v in one of your next videos pls !!! I made same induction heater last month but now I understand how it works thx !!!
I have two different welders one is an AC welder and the other is a DC. The DC welder is capable of constant, current or constant voltage In constant voltage mode I could set it to 12 volts and possibly limit my amperage somehow. But 3 amps would be difficult. Anyway, would I be able to use one of my welders as a power source to heat up very large knife making projects, for example, 2 in wide by 12-in long carbon steel
Thanks for sharing....i have a question...In industrial application of induction furnaces, the water cooled capacitors tend to inject excess reactive power into the grid which affects the power factor as a result of over compensation. Most foundry industries are facing low power factor penalties because of this situation. How best can this scenario be solved without affecting the operation of the induction furnace?
i want to build an induction heater with a 12-14mm inner diameter, does increasing and decreasing the size of the coil have much effect on the end result?
Simply use a cheap 40watt soldering pencil and a box cutter blade. Use the screw that holds the soldering tip, remove the tip and attach the box cutter blade through the hole in it to the outside of the heating coil, that secures the tip. So instead of a soldering tip you have a razor blade that is constantly heated by the solder pencils inductor. You don't need to keep heating it up; it stays hot. Cheap soldering pencil (40watt) stand, flux, and a small rol of 60/40 solder at Walmart = $9.99 and a pack of 10 razor cutters = $3.49. ⚡⚡ I use my variable solder station with a small coil of wire clamped in place of the tip, on my heat mat to keep my coffee hot. Great stuff in your videos. Your insights and knowledge seem to fill in the few gaps in mine. I'm a southern redneck in South Carolina US. I never throw anything away. If it will cast a shadow; it has value if you know where to use it. Imagineering. That's what you get from a BA in economics, a BS in Computer Science, a Masters in Physics; Optical/Acoustics, Quantum, and Classic Mechanics, undergrad in General Chemistry, Masters in Ancient Biblical Dialects, and finally an EMBA in Business and World Economy. And all but one degree was tuition free. But through it all I am a musician and musical instrument amplifier and high end stereo tube amp repair tech. I have a brain full of almost useless academia; but have always been a general "hands on" repair craftsman for over 45 years. Love your videos. I also write code, starting with the assembly machine code for the intel 8088 and 8086 back in the late 70's and know my way around the other 80% of the bandwidth of the Worldly really wide Webulator. White hat.
Nice clips about..., Induction heat is often used for harden metal that has ferro- or paramagnetic crystal, i. e. knife sheaths. Some case hardening or surface hardening.
I have a question: If something gets hot by this method, it is emitting more infrared radiation: is it, are they, emitting more microwave and radio radiation also?
So according to 3:35 brass heat up more because it has higher resistance. Based on that shouldn't your finger at 1:35 heat up even faster than brass since it processes an even higher resistance?
Please correct me if I didn't get it right. Material gets heated , because of hysteresis loss, means bars of metals are in continuous processs of magnetising and demegnetising and loss occurs in bar, so its get heated.
@ 80 ~ 120 KHz (if such intuition ain't too wrong)?... There's now dual-frequency cooktops in blueprints, expect them to emerge on the market soon or maybe i need an update myself! Now, why more than 1 anyway?? Go figure...
"I can start cutting through things with a hot x-acto knife because sadly this is the type of content way too many people enjoy watching." Hahaha, that was funny. For real though. People watch some stupid shit and that kills brain cells instead of actually teaching something.
yes the coil heats up also due to current flow, like a hair dryer gets hot when electricity flows thru the coils... the important part is to design the circuit to limit the current thru the heater coil to keep the coil from being damaged.
What alternative MOSFET (D482) can be used if existing one on the board blowout? I purchased this Chinese induction circuit but 2 of its MOSFET blowout. Now it's useless i don't want to throw it. If you can help!
I am wondering if it could be used to heat copper wire for annealing or would the resistance be too low? I am talking a short length of 2.5mm2 copper wire.
Wow. That hand drawn circuit diagram is an incredibly beautiful thing. A piece of art. Congratulations!
Thanks ;-)
I learned to draw electronic circuits when there where no computers. I still draw mostly by hand. Drawing a circuit by hand gives you a better understanding of it. I encourage my children to write everything down. It's also very good for developing eye hand coordination.
I built this circuit and would like to share some details that will help you .
1) Select polypropylene capacitors for lowest loss. It is bettter to use many smaller capacitors in parallel rather than a few bigger ones.
2) The circulating current in the tank circuit is very high; it is multiplied by the Q factor. Q factor is determined by tank losses.
The circulating current is roughly equal to the measured circuit current draw multiplied by the Q. For example if the current draw is 5 A., and the tank Q is 50, the circulating current could be 250 amps. This is why the coil and the resonating capacitor gets so hot so quickly.
By using many smaller capacitors in parallel you distribute this current so that no one capacitor will be subject to huge currents.
3) The voltage across the capacitor is roughly 2 pi times the supply voltage. Select capacitors with a voltage rating about 10 times the supply voltage.
4) Two critical ratings of the mosfets are: 1) the drain-source breakdown voltage. Each mosfet will be subject to a voltage of roughly pi times the supply voltage. The mosfets should have a voltage rating of at least 4 times the supply voltage. 2) Drain source current rating which should be calculated from the desired wattage of your circuit. In addition, the drain-source resistance should be a low as possible in order to minimize the head dissipated by the mosfets, and also to maximize the potential power available from a given supply voltage.
Along with zener diodes to protect the gate of mosfet, it is recommended to place a small resistor (10 ohms is good) in series with the gate to damp out ringing which can subject the gates to excessive voltage. The gate of a mosfet is quite fragile, and should not be subject to greater than about 20 volts. 12 or fifteen volt zener diodes are recommended......
I hope that this helps experimenters with this useful circuit, and thanks to GreatScott for the excellent video presentation.
6:24 6:24
May I have circuit diagram?
This is a great piece of information.
Adding capacitors in parallel might help reduce heat/load on the capacitors itself. How could one reduce the heat of the coil without a fan, or pumping water through it? I have tried to mess around with the windings but is not effective in keeping the coil cool. Your help would be appreciated. Someone has suggested that a thicker copper wire should decrease the temperature of the coil.
that pen writes so smooth, its mesmerizing.
What type of pen is that?
Tenus123 Its only available in Germany. Its by Stabilo.
Mayus • Tutorials
Bet
Creeperguy555 ok good to know. Didn't know they're also available in other countries.
That pen writes so smooth, its mesmerizing. And written left handed! Double bonus. I have no idea what I just watched but interesting nonetheless.
i wish i stayed in school longer
Hey GS, you call your VCCs as constant current source. Aren't they voltage sources?
+ElectroBOOM They are voltage sources. But the inductor will act as a constant current source.
DAAAAYUMMM, that hurts
ElectroBOOM and GreatScott! two of my favourite electronics youtubers in the comment section of the same video!
I also wanted to ask you about that ... what do you mean by constant current source ?, aren't they just a high-frequency choke to prevent oscillations from coupling back to the supply
OMG THE CLASH OF THE TITANS!!
A cool idea would be to make an induction heating probe that was driven through a flexible cable. That would be very useful for soldering plated iron standoffs onto pcbs.
I don´t understand why so many people watch these hot knife videos
Me neither
i think people find it satisfying when hot knife effortlessly cuts through stuff.
Because some of it is funny.
UA-cam changed its recommended video algorithm and I would say nearly everyone has had the hot knife videos in their recommended tab leading to a huge spike in views/subscribers.
I guess, "hot' is popular key word when people searching for videos
It’s been so many years since I’ve drawn a circuit diagram. Yours are beautiful, makes me want to go back
me puke.
The only hot knife video I actually enjoyed.
Red The only hot knife video you should be watching.
so i +1
Red same
"Sadly, this is the sort of content that people enjoy watching..." Day, made.
agreed. feels like were being trained to be cavemen. ooo look..fire on a stick 10000 subscribers instantly.
I wish doctors had engineers handwriting.
@Connor Hill Especially left hand writting....
It’s the same hand they wield scalpels with, too...🤔
@@echobravo5488:D and the same for surgery too.... ops
@@richardphatthenguyen195 xddd true
Hes writing technical not handwriting
When removing enamel from copper wire, first burn it off using a lighter or something. It will come of really easily. On some thin wires, using sandpaper will risk breaking it.
0:24 Just btw, never cut PVC pipe with heat, as it release toxic chlorine gas. So avoid doing that
Good to know. A saw works better anyway.
GreatScott! Can I use a schottky diode instead of the UF4007?
Don't lots of things release chlorine gas? Like bleach, and, um... lots of other things?
Chlorine together with Carbon and heat, at least open flame, produces Phosgene gas, (any one who has worked CFC air con. have come across it), and that is really toxic.
Soldering also releases toxic fumes, that's why you buy a fume extractor, or solder near an open window with a fan.
DMn i rwmember when your channel was small, you even included my comment in one of your videos...now you have half million subs! nice :)
Somehow it feels real good to read "half million" gullible/naïve individuals fell for it, much like the lemming myth...
@@Egzoset The fuck are you going on about? Are you trying to say induction heaters are fake? Because I have one and you can buy them cheap....
Salutations @@Krytern,
The Magnificent & Omnipotent Egzoset has heard the news before indeed, about "it works" and the rest. Have you ever heard of these solid references generally rejected/ignored by objectors? For example:
www.pupman.com/current/vladi/vladmap.htm
Mazzilli Vladimiro's Tesla Coil images
www.pupman.com/current/vladi/vladi4.jpg
i.postimg.cc/9QyzFx99/Pupman-Vladimiro-Mazzilli-Milano-Italia-MOSFET-driven-Tesla-Coil-480x400.png
Just in case one may feel anything remotely interested, some of the rest awaits out there:
www.reddit.com/r/inductionheaters/comments/j5la0d/where_to_buy_induction_heater_for_diy_project_eu/
Where to buy induction heater for DIY Project EU / Switzerland
Good day, have fun.
It just blows my mind how much you know about this...
Rodrigo Pereira I think he reads of a book or his notes before telling it in his video.
Jonny D or he just studied engineering
Hoang Seidel Probably thats it but he doesnt know things to much more complicated?
More like electronics or physics than engineering alone.
Rodrigo Pereira standard knowledge for an engineer
Thanks! A couple years ago when I was 10 I saw this video and went to the local electronics shop and built the exact thing just from looking at the way you did half the parts where from scrap items and ended up using it till I moved house
Oh boy, now we will have more 1000 degree knife videos
***** you don't say.
***** Do you not understand sarcasm.
***** fat? lol that the best you can do? you know what I am not even gonna bother.
***** Please you are embarrassing yourself, go away please.
Rounak Dutta it's great jk
'now that we understand the basics of... "
Me: dafuq?
Agreed, there's alot a baloney when it comes to Mazzilli's so called simili "ZVS" topology applied to IH drivers - which typical lemming mystifiers are now satisfied to refer to as a magical "DNA" (...) despite the simple fact that removal of a flux concentration core in Mazzilli's Flyback Transformer can't reasonably be expected to work just the same as when he got photographed besides his Tesla Coil work, in 2008 ~ 2009...
So, over a full decade has passed and yet today's fanboy tactics are being used to manipulate vulnerable people using half-lies and plain omissions. All of this just to revalorize obsolete PCBoards with ZERO protection, in an attempt to deny/ignore true technological advance in favour of getting delusional over IH Drivers supposed to cost less than a month's worth of pizza delivery i guess!
Ah, and of course you never get to be shown any realistic Gate Waveform signals, much less in relation to their resulting output, as if the Mazzilli topology never inspired serious papers in superior institutions of knowledge before, for example:
docplayer.net/26964431-High-voltage-resonant-self-tracking-current-fed-converter-a-thesis-presented-to-the-faculty-of-california-polytechnic-state-university.html
High voltage resonant self-tracking current-fed converter (2010-Mar)
p52/152 - Mazzilli Converter Topology
Here we must forget about frequency vs alloy optimization, never heard of semiconductor junction recovery charges, nor parasitic resonances and so on!! As if electronic design has become just another excuse to justify the one other hobby that gathers the followers around some "social" love-to-hate activity instead - totally unable to dialog via relevant arguments, not to mention i got quite successful on Reddit illustrating such mediocrity in all its virtual glory... Much like the rationale behind half of USA still standing behind Trump even today, e.g. throwing a dice would easily beat such type of "science" that they claim to "work" (until it fails, then a deafening silence covers their few voids), while in fact nothing is ever done to prevent a catastrophic forbiden condition as "Shoot-Through" in the 1st place: imagine, these days an electronic breaker is supposed to take over but only after the short-circuit has started - and we're talking about very serious current being involved nonetheless. Go figure where's the FuckCombustion NASA engineers!...
Please revisit in 5 or 10 or 15 years, if possible.
Ummm shure I um understand now 😳
Yeah, he really did not explain anything there.
@Coo Koo intelligent people are usually seen as crazy by the lemmings
I agree, too many people enjoy the heated knife cutting content.
"Sadly this is the type of content people enjoy". You're the best.
In addition to the differences in resistance and magnetic susceptibility, different material also have different specific heat values. Aluminum, for example, has a much higher specific heat than iron or copper, steel, titanium and is about 7X that of Tungsten. So, it takes more energy/heat to raise a gram of Aluminim than for many other metals.
Indeed.
And water is even higher
@@dubmob151 -- About 5 times higher than Aluminum. There's a reason it's used in radiators and heat exchangers...
The 1st person who pronounced hysteresis 🇬🇷 correctly!
I am so proud of you!
I learned about a way to reverse engineering a circuit that had more value than the title for me.
Thanks for the content
I usually avoid videos like this , but I figure this can't be one where things are heated, and just a lot if playing around, like the videos where they build fly backs, and make arcs the whole video, but this is much better, great video Mr Scott!!!
I really love the addition of the handwritten calcs and diagrams!
You have beautiful handwriting
I love that about every 3 weeks, there is a brand new, fresh video waiting for me to watch here!
1000° HOT EXACTOR KNIFE VS INDUCTION HEATER PRANK GONE WRONG?!1!!
I would have not been able to come up with a better title ;-)
cops called
ILLEGAL GAMEPLAY POLICE CAME ??!!!
DerMathematiker IN 3 AM?????
WATAFAK XDDD those tittless XXDD
The knife fell to the ground and made a charred mark on the hardwood flooring.
The best demonstration of the phenomenon that exists on youtube. You showed the results with different materials in a very simple but useful way.The little knife is just the appetizer. Congratulations.
So redundant & boring.
Great editing with the hand-drawn schematics, thanks Scott!
Hi
I have a question ,I hope find answers?
Many other youtubers did this experiment but after few minutes the circuit got broken.
Why ???
What do you think the reason?
Denial would seem like the begining of a most probable hint... These days DynaVap prefers to wrap it up as some mystical/magical "DNA"!
The circuit diagrams drawing is so beautiful.
Thank you for giving me the explanation about the transformers with the plates.. I always thought it was due to design/build reasons.
I am working with my 7 year old son on electro magnetic experiments. He also observed the change in heat when we used a thick iron screw as a core. However, my equipment is really scrappy and I am missing a lot of what you might have at your disposal. Do you have a recommendation for equipment that you’d see as a minimum necessary to produce repeatable results?
My favorite part…”and now that we understand the basics of induction heating”. 👌
0:24 shit now I spilled my tea
Can i make my own induction heater by using copper coil and ac currents (220 Volts) of our homes directly. Will it be okay to do...?
All of these induction videos have such small coils, I would like to see one large enough and powerful enough to be used for recycling purposes such as being able to pass an aluminum can through the coil and powerful enough to melt extruded aluminum such as window frames and even able to melt brass.
Get a thicker coil with less windings
to do that you need "transistors" the size of a pack of cigarettes, something that can handle 1200 volts and 800 amps, maybe something like the MGQQ400Q1US11 by Toshiba
If we want to convert this to an induction cooker what changes should we do. Point is when u put any ferromagnetic material inside the coil it heated up as inside the coil and inside the coil magnetic field is very strong . but near to its opening it should work good and produce proper heat . what changes should I need to use it as induction cooker , do I need larger coils (obviously). and put small utensil inside it for efficient heating .
"Sadly this is the material people like watching" I feel you bro
your sense of humor is fantastic, thank you
you make me want to spend lots of money on things i will probably use 1 time
Once you collect a few tools and supplies and start scavenging through old electronics. You put them together and blow up tons of circuits. Then you finally make something that works. You can't figure this stuff out without letting the pixies loose. You learn more from your mistakes. Go let the smoke out of something.
I did that once in Vegas ...
Always doing that XD
Thanks for the videos. I'm a student (Studying to be an electrician) and I reference your videos to my class mates for examples on many things.
"Aluminum , brass, and eyerim"
God I love your accent 😆
It's eyerene 😅
I think he Mixed up, because the German of Iron is Eisen which is pronounced eye-zen
lol yea. eyeron! aloominum! A friend of mine moved to Sweden from UK and his wife convinced him it's "eyeron man" 😲🙄
can i heat the diesel pipe of my oil burner ? or is to hot so it burns my pipe?
I am amazed by your knowledge and abilities. You indeed inspire me. Which software did you use for the circuit diagrams?
I think its Easy EDA. Its free on the web , and also available as computer app.
Pretty sure that's KiCAD, open source and very powerful EDA. Used extensively at CERN (among others).
Your handwriting is phenomenal
Now I understand why, despite the eddie currents, my aluminium pans didn't work in the induction hob!
your hand writing is so good 😲😲
3:55 Just the tip :P
yes 1:34
Don't you hate it when you're forced to only insert the tip
33:55
Now I finally understand what my physics teacher couldn't. It's mainly the losses of magnetising wich heats up tha cookware.
Thank you :D
Sometimes all you need is just the tip.
What power source are you using/can I use ? Nothing fancy, just a basic power source. Thank you.
Not everyone like those hot knife videos, i really hate those.
What i need to do to create a coil with a diameter of a mug?
is the mug made of metal? Induction heating only works on metals, not ceramic. Though I agree, I don't like the hot knife videos. They are absolutely boring.
Jonathan Kayne yes it is, i guess its aluminum, but im not sure, my plan is a coffee warmer.
You could make it just like he did but you'd have to make the coil larger than the mug so it'll fit. Plu you'd have to remember that the coil is heating the MUG which is in turn heating the liquid, so be careful and don't burn yourself.
steven kutschat
but still the same winding count?
because the diameter of the coil will be greater than the shown on video.
I don't know if I can help as far as the math goes, but I have about 3 industrial induction heaters that we use for drop forging. the coils are really large and it seems that inductance of the coil (AKA the diameter) has no effect on it. however, the coils are made of a copper tube so that water can flow through them to keep it cool. therefore, I would recommend you use a thicker gauge wire to let the resistance of the heating coil.
Would it be possible to hack a normal induction cooking plate to make an induction heater? Thank you!
lol you actually drew dozens of em?😂😂
M'well a couple others did it before:
Mazzilli around 2008
Royer in 1954...
What an accurate and perfect handwriting! Chapeau!
lol, Great Scott snipes the 1k knife lovers!
I still have never clicked that video; do they use an induction heater to get the knife that hot?
Seraephus nope, they are using gas torches (the same as red hot ball guy uses)
LAME!
Iron (steel) 26-Fe, Cobalt 27-Co, Niken 28-Ni: They are in the Iron-magnetic group. the Foucault current (AC) will make them be hot (the ingot or bar form of those materials is easily to transfer heat)
"Sadly this is what content people watch"
LMAOOOO
4:35 The word is Hysteresis or magnetic resistance. When a ferromagnetic material is magnetized in one direction, it will not relax back to zero magnetization when the imposed magnetizing field is removed.
4:55 "simple"
it is
in germany you'll get to learn this shit in school
@@liqzz yea 🔥🔥🔥
Simple to make🤣😅
And fail.
it's literally at the screen everything you need😂
I love this channel!
I got lost 0:00 of the video, but got back on track at 6:29.
Nice , can this circuit made to heat water using solar panels but only consuming 100 watts instead of 3 or 4 Amps ?? Thanks .
Your video seems to follow the trends ;)
Hi, I am not good at electricity and I have a question, please respond. I used an induction heater to heat magnetic materials. The input of the induction heater was DC 24V 15A and it could well heat magnetic materials. However, as i know, only an alternating magnetic field (generated from AC voltage) can heat magnetic materials, so how could my induction heater (using DC voltage as input power) heat magnetic materials?
can you pls make switching mode inverter 12v to 220v in one of your next videos pls !!!
I made same induction heater last month but now I understand how it works thx !!!
I have two different welders one is an AC welder and the other is a DC.
The DC welder is capable of constant, current or constant voltage
In constant voltage mode I could set it to 12 volts and possibly limit my amperage somehow. But 3 amps would be difficult.
Anyway, would I be able to use one of my welders as a power source to heat up very large knife making projects, for example, 2 in wide by 12-in long carbon steel
2:45 must’ve taken a long time
Excellent teaching! and very neat and clear diagrams.Thankyou .
docplayer.net/26964431-High-voltage-resonant-self-tracking-current-fed-converter-a-thesis-presented-to-the-faculty-of-california-polytechnic-state-university.html
High voltage resonant self-tracking current-fed converter (2010-Mar)
p52/152 Mazzilli Converter Topology
p53/152 Figure 2.9: Mazzilli Converter Topology
"ROOM TEMPERATURE KNIFE VS INDUCTION COIL!"
Thanks for sharing....i have a question...In industrial application of induction furnaces, the water cooled capacitors tend to inject excess reactive power into the grid which affects the power factor as a result of over compensation. Most foundry industries are facing low power factor penalties because of this situation. How best can this scenario be solved without affecting the operation of the induction furnace?
was about to make a 1000° knife joke, you was faster...
i want to build an induction heater with a 12-14mm inner diameter, does increasing and decreasing the size of the coil have much effect on the end result?
Hi. (Sorry for my bad english)
Simply use a cheap 40watt soldering pencil and a box cutter blade. Use the screw that holds the soldering tip, remove the tip and attach the box cutter blade through the hole in it to the outside of the heating coil, that secures the tip. So instead of a soldering tip you have a razor blade that is constantly heated by the solder pencils inductor. You don't need to keep heating it up; it stays hot. Cheap soldering pencil (40watt) stand, flux, and a small rol of 60/40 solder at Walmart = $9.99 and a pack of 10 razor cutters = $3.49. ⚡⚡ I use my variable solder station with a small coil of wire clamped in place of the tip, on my heat mat to keep my coffee hot. Great stuff in your videos. Your insights and knowledge seem to fill in the few gaps in mine. I'm a southern redneck in South Carolina US. I never throw anything away. If it will cast a shadow; it has value if you know where to use it. Imagineering. That's what you get from a BA in economics, a BS in Computer Science, a Masters in Physics; Optical/Acoustics, Quantum, and Classic Mechanics, undergrad in General Chemistry, Masters in Ancient Biblical Dialects, and finally an EMBA in Business and World Economy. And all but one degree was tuition free. But through it all I am a musician and musical instrument amplifier and high end stereo tube amp repair tech. I have a brain full of almost useless academia; but have always been a general "hands on" repair craftsman for over 45 years. Love your videos. I also write code, starting with the assembly machine code for the intel 8088 and 8086 back in the late 70's and know my way around the other 80% of the bandwidth of the Worldly really wide Webulator. White hat.
Nice clips about...,
Induction heat is often used for harden metal that has ferro- or paramagnetic crystal, i. e. knife sheaths. Some case hardening or surface hardening.
Yeah only insert the tip😂
Thanks for showing this to us Greatscott.
it's like the 1000 degree knives but in a scientific way
FreeShit ikr!
FreeShit more advanced than using gas torch!
I have a question: If something gets hot by this method, it is emitting more infrared radiation: is it, are they, emitting more microwave and radio radiation also?
"sadly people seem to like more videos of that knife thingy."
nikoli gogle lol, I love that part...
What is that knife thingy again?
Exacto knife
So according to 3:35 brass heat up more because it has higher resistance. Based on that shouldn't your finger at 1:35 heat up even faster than brass since it processes an even higher resistance?
I was forced to just insert the tip of it....lol
Please correct me if I didn't get it right.
Material gets heated , because of hysteresis loss, means bars of metals are in continuous processs of magnetising and demegnetising and loss occurs in bar, so its get heated.
@ 80 ~ 120 KHz (if such intuition ain't too wrong)?...
There's now dual-frequency cooktops in blueprints, expect them to emerge on the market soon or maybe i need an update myself!
Now, why more than 1 anyway??
Go figure...
4:55 According to the simple schematic-----------say what?
I'm trying to build an induction heater with at least 250 KHz frequency. What parts should I use to achieve that frequency?
"I can start cutting through things with a hot x-acto knife because sadly this is the type of content way too many people enjoy watching." Hahaha, that was funny. For real though. People watch some stupid shit and that kills brain cells instead of actually teaching something.
so i know the coils arent suppose to get hot but i hit mine with the laser thermometer and it was up to 250F. if left idle, is it expected to heat up?
I really wish I could write like that.
I wish I had his understanding of electronics but it is not my bag.
Where do you buy the metals; iron, copper, aluminum ?
Don't give MrGear any new ideas
Hi Scott, does the coil itself heat up as well? or is it just the metallic material inserted into the coil that heats up?
Many thanks
yes the coil heats up also due to current flow, like a hair dryer gets hot when electricity flows thru the coils... the important part is to design the circuit to limit the current thru the heater coil to keep the coil from being damaged.
It always sounds weird when you say "i-ran", it's pronounced "i-on" :D
Or i-urn
It's personal preference ("eye-run" or "eye-uhrn")
what are you austrialian? It’s pronounced literally as such “i -ron”
I yearn for iron
Can wire such as solid 12 gauge wire from household wiring work as effectively as 2mm enameled wire?
Wow never thought you would be reduced to making a "hot knife" video...
This is anoutrage, I'm unsubscribing from Mikeselectricstuff right now!
TKO Jabroni lmaoooo that is soo random XDDDDD i though u gonna unsub greatscott XDDD
What alternative MOSFET (D482) can be used if existing one on the board blowout? I purchased this Chinese induction circuit but 2 of its MOSFET blowout. Now it's useless i don't want to throw it. If you can help!
Who else coming after watching Electroboom's recent video 👍
Me!
I was about to comment the same thing lol
I am wondering if it could be used to heat copper wire for annealing or would the resistance be too low? I am talking a short length of 2.5mm2 copper wire.