No problem 👍

Thank you very much

Thanks 😊

Thank you very much!

Thanks a lot for the tip about silicone.

IN5408 instead of IN5822 nice trap🥱

You're right, I don't know why he doesn't want us to make it.

That's why it was not working properly, now I found out, thanks to you.

Go for it!

damaged? they blow up if you look at them sideways! and heatsinking is the least of your concerns actually. blow up. literally. the fets explode. they dont get a chance to heat up. of course, thats because no-one actually understands how they work, the importance of the number of turns, how to select the ideal components for a given powersupply and limit the power it can deliver... play some happy crappy music, edit it so it all looks nice and clean, and then throw ten ads on. they arent supplying information, you arent learning. you are being used to make revenue. money. you are a product. that being said, these circuits work fine, but they are delicate. one wrong move, and BANG. its five minutes to replace everything. you soon learn to build them as simple as possible. dont bother with PCB or perfboard! tag strip screwed to some timber is quick and easy. buy fets and diodes in bulk, 50+ at a time... this is the information no-one provides... the coil and workpiece forms a transformer and the workpiece is 1 turn, with its resistance being reflected into the power supply at the square of the turns ratio. changing the number of turns changes the power the supply can deliver, and also changes the frequency, which then changes the skin effect depth and the apparent resistance of the work and so the power isnt directly related to number of turns, or the power supply, but the frequency as well. you dont really know the resistance, and the skin depth is also a bit vague. the best approach is start with 10-12 turns, with the idea that will give 100-144X the workpiece resistance, and by doing some maths, ohms law, with an ammeter/voltmeter on the supply, you can figure it out. then you know that your FETs can take so many amps and you will need so many turns to keep just within that limit, without exceeding. the capacitors may need tweaking to bring the frequency back to where it was... 100khz is a nice figure for general duty. when they say "1200W"... its a load of crap. not the way these are made, usually. at best, its 2-300W at the load. putting 1.2KW into a workpiece this small brings steel to white hot and burning in a few seconds. the circuit losses increase as frequency goes up. the heating effect goes down as frequency reduces. or, should i say... it gets DEEPER and more penetrative... big stuff wants lower frequencies, small stuff high. try to lay the main conductors, the leads to the coil, together. as close as possible. you want them to be as capacitive as possible until the actual coil. anywhere they are not side by side there is a magnetic field and that is a loss. they are fun though ;) been blowing things up for 30 years and im still a newbie!

Thanks

Thanks all

Thanks for the tip!

The answer is nothing actually. Only thing that would happen would be when you touch the coil and you burn yourself because the coil gets hot under operation.

just remember to remove any rings, bracelets, etc..

Thanks, it affects only on metal

Thanks

Thanks for your attention

😆

Hola, me interesa como hiciste el circuito, me podrias ayudar un poco con cierta informacion sobre los componentes, especeialmente los toroides?

it is depend on the current of your power source the DC 12 battery current is not enough.

Thanks for your comment. These transistors withstand up to 48 volts. Please multiply 48 by 30 amps, which is 1440 watts

​@@InnovaDIY It still won't be able to handle this much power. Ferrite toroids aren't meant to be used as energy storage inductors. Use iron powder rings for this application. 1N5408 are too slow to be used in a high frequency circuit. You need to use UF5408 (the ultrafast version of 1N5408) or some schottky diodes. The capacitors in the tank circuit are meant for interference suppression and can't handle the current flowing through them. Use capacitors that are meant for really high current and frequency operation, like FKP capacitors. The heatsink of the transistors is a bit too small if you want to use the heater with 1440W. The coil will also get very hot at that power and the laquer on the wire will burn off. You need a coil made of copper pipe for this power. And of course active cooling for the components.

yes you can but the maximum current of your power bank is important please read the detail and if you want send for me to investigate it.

@@InnovaDIY if you want to melt metal the easiest way and efficient way, you must use a coil that has AC power in it and not DC. your voltage of AC in the coil must be at least 240V AC to melting it. 12V DC is not enough and AC power is the only way to melt metals.

hello, yes heat sink is necessary, because of the speed of switching these element become hot.

And ferrite toroids aren't good for this application anyway. You need iron powder toroids for this purpose.

Oh , Thanks. It is my pleasure that you consider my project.

I think so

hola, me gustaria saber como hiciste tu proyecto siguiendo el esquema, tambien, puede que tu fuente de 12v no tenga el amperaje suficiente para trabajar con el ciccuito.

@@fcgnjhufcfc no sé si los transistores nuevos que compre estaban defectuosos porque los cambie por unos IRFZ44N y ya me funcionó muy bien, incluso me interese por este proyecto porque tenía los mismos transistores que trajo una placa ya armada que mandé a pedir, pero para mí mala suerte esa placa el primer día que la puse se quemaron los mismos transistores que montan en este proyecto

hi, thanks for considering video ,and the voltage?

12 volts.

You must check the switching speed and the amp in the data sheet

I mean current

Don't! It has 10 times the internal resistance of an IRFP260, which means 10 times the power dissipation!

It could be changed by your circuit but this circuit maximum of 30A

thanks

It is calculated

Thank you for your comment and raising a valid point. Induction heaters can indeed require substantial power, and higher power ratings often necessitate specific power supply requirements. In our case, designing an induction heater that operates directly from mains voltage (220VAC or 110VAC) allows for simpler and more accessible implementation for a broader audience. By utilizing the existing mains power, users can avoid the need for a separate dedicated power supply with higher power ratings, which can be costly and less convenient for many individuals. However, it's important to note that safety precautions and proper circuit design are crucial when working with mains voltage. We always encourage users to prioritize safety and consult professional advice or guidelines when attempting any high-power projects. Thank you for your thoughtful observation, and we appreciate your engagement with our content dear friend.

Thanks for your care and attention.

Yes, it can, but may be the power not be enough. Because 12×75 =900w You can test it.

@@InnovaDIY OK, thanks a lot !!!

Can this be immersed in water as heater.