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2000 W induction heater

Specialist / Electronics / Apparatus
Added 17 comments




Induction heater is a good tool to help the master-master for heating metal objects.
In this article, the Wizard will tell you how to make a powerful induction heater for 2000 watts.




Tools and materials:
-Printed circuit board;
- Copper wire 12 AWG and 16 AWG;
-Ferrite cores;
-Fan 12V DC;
-Radiator;
-Resistors;
-Capacitors;
-Diodes;
-Soldering accessories;
-Nippers;
-Pliers;







Step One: Scheme
The device works as an LC-type generator and induces current in metal objects with a constantly changing magnetic field.
A DC voltage in the range from 12 to 36 V is applied to the input. Two fuses are installed at the input. Power is then supplied to a 12 V LM7812 voltage regulator, which is used to drive the fan, and to four N-channel amplifiers that drive two channels that operate alternately and thus change the DC voltage into a continuously changing electric field .

Now there are two possible configurations, you can either use only one built-in inductor and divide the output coil into two parts, which makes the design more complicated, or use two inductors and one coil, as the master did.

Step Two: PCB Design
Having finished work on the circuit, the master began to develop a special printed circuit board for the induction heater.
Scheme, files and specification can be downloaded from this the link.




The master ordered the board at JLCPCB.





Step Three: PCB Mounting
After all the details have been assembled, the master proceeds with the installation of the board.




It starts with smaller parts - resistors, diodes, connectors.









Installs a radiator and fan.







Step Four: Inductor
Coils master makes of 24 mm ferrite. The winding is wound with 16 AWG copper wire. It is necessary to wind 22 turns.




Then solder and to the board.




Step Five: Induction Coil
Induction coil wound from 12 AWG copper wire. Produces winding on a plastic pipe. The number of turns 25. Mounts the terminals at the ends.Mounts the coil on a circuit board.







All is ready. Tests have shown that a metal ruler and a 5-mm metal rod are heated to red in a few seconds.
The whole process of manufacturing such a device can be seen in the video.
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17 comments
0
Reply To quote A complaint
That's why I became interested in foreign manufacturers of boards. I can agree with friends in my city, they will do it at their enterprise for almost this way ( drinks ), but it will have to wait until done, an indefinite time. And they, too, will not bother, not only because of 5 boards, but also because of 25! The specifics of this production is as follows. And you’ll have to pay the money, you won’t get off with vodka xaxa

It happens that you need to make 1, 2, 3 or the same 5 boards. And there it will already be visible. On demand, so to speak.

A simple example from the old days. In the days of VHS VCRs, the "Electronics VM-12" video was widely distributed; it was also assembled in our city. A thing of the past, in narrow circles they know that he was torn from the Japanese G .... At first, he came with an imported block of video heads and some microcircuits. Unlike the prototype, ours was distinguished by a lower quality picture and low reliability. Of course, he did not have a remote control.

One of my friends, when I was repairing this video player, expressed his dream. Well, it would be nice to make a remote control for him. (And there were already domestic TVs with remote control). I asked how much he was willing to pay for this pleasure. The average monthly salary of an engineer !!!!! I tensed up and in a month developed and manufactured a prototype of this device. This was not an easy matter. I decided to insert a photodetector (shielded photodiode FD 263) instead of the logo of the manufacturer xaxa . thus, it was not necessary to drill the front panel; drilling was always painfully perceived by the owner of the device. In addition, he made the function of accelerated viewing without holding the button. This could not be done from the front panel of the tape recorder, it was necessary to keep the key pressed constantly.

In short, there was a demand for this system of mine. I left work and began to manufacture these remote controls and install them. And then altogether, only by manufacture, others set. In fairness, I must say that another craftsman came up with a similar system. Parameters were compared somehow. My range was higher and there was a function of accelerated viewing without holding the button. But then I drew the circuit boards on a string by the route manager, and he had a canal at the factory and the finished circuit boards were stamped in batches.

I told this to the fact that it would then be possible to order ready-made boards from the Chinese, or somewhere else, you could become a millionaire on that homemade product.
Author 0
Reply To quote A complaint
Yes, at least 5 boards. But the most expensive is the delivery. And the first time for free, and then .... But all the same, cheaper than in Russia.
0
Reply To quote A complaint
Without touching the homemade product itself, I’ll say. I decided to study the prices for the manufacture of printed circuit boards, the benefit of the article shows the corresponding site. As I understand it, a two-layer board 15x15 cm (small) -2 bucks (5 pcs. Must be ordered, otherwise they will not be taken to produce). Well, I think the four-layer, of course, will not be more expensive than 2 times, but more ... But I did not expect this. 15 bucks, moreover, the dimensions are even smaller - 5x5 cm (tiny) and you need to order 10 pcs. minimum! smile The quality, I agree, is excellent. And there is a mask, they probably now do not do without a mask. As one-sided. So, if the board contains only 10 parts, then the wiring should draw a two-way))) xaxa It turns out that you will have to make your own boards in one copy yourself, as you did 20 years ago. cray
Author 0
Reply To quote A complaint
This is how they let us out. And he is from Pakistan. Maybe there are 26, 27, 33 ......
Author +1
Reply To quote A complaint
Sell ​​a bare board.
- Firstly, I am not the author, and secondly there is a link to the board and specification. At the end of the article there is a link to the article source. Come in there. There is a link for the board. The author says a 30% discount if you go through this link.
0
Reply To quote A complaint
You can enable the video. In the first frames.
0
Reply To quote A complaint
Exactly. The diameter of the ferrite is 24 mm. These pipes produce 20mm, 32mm, 50 mm and beyond. It can be seen that the coil is larger, it means not 20. But not twice, it means not 50. The output is 32 mm.
+2
Reply To quote A complaint
Quote: pogranec
The ferrite diameter is 24 mm. So, probably feonor12 - 32 pipe is right

These are perspective distortions of short-focus lenses. And so when you shoot these, you need to consider when building a frame. Comparable objects in the photo should be equidistant from the lens and from the center.
Guest Boris 0
Reply To quote A complaint
Sell ​​a bare board.
Author 0
Reply To quote A complaint
The ferrite diameter is 24 mm. So, probably feonor12 - 32 pipe is right
Author 0
Reply To quote A complaint
One writes 32, the other 25. Therefore, I do not write if the author does not indicate. I tried to find the info in the comments, but ... Personally, I think closer to 25, but FIG knows what size range of such pipes they have in Pakistan.
0
Reply To quote A complaint
If in the photo the rod = 5mm and the ruler = 19mm, then the dia. "pots" ~ 25mm.
0
Reply To quote A complaint
Yes 32nd PVC pipe (32 mm).
Author +1
Reply To quote A complaint
on a pipe of which diameter is wound.
- the author is silent about this. I can only guess
+1
Reply To quote A complaint
Quote: pogranec
- what is a "potty"?


I think Korolev had in mind the hundredth sewer pipe, and the essence of the matter is on a pipe of which diameter is wound.

And the voltage in watts is not measured.
Author 0
Reply To quote A complaint
What happened to the fan
-melt-)))) replaced by another
Will Pushkin translate diameters into mm?
- In mm what? 16 AWG - diameter in mm 1.291 - Cross-sectional area, mm2 1.31 - Nearest face value, copper, mm2 1.5.
On the canal?
- what is a "potty"?
This is somewhere 55 - 166A !!!

The heater can operate in the range from 12 to 36 V DC and can withstand voltage surges up to 2000 W, which is enough energy to work with large objects.
+2
Reply To quote A complaint
four N-channel amplifiers that set in motion two channels that operate alternately and thus change the DC voltage in continuously changing electric field
The ease of thought is extraordinary! What happened to the fan in the last photo in step three?
wired 16 AWG ... 12 AWG
Will Pushkin translate diameters into mm?
Produces winding on a plastic pipe. The number of turns 25
On the canal?
The input voltage is DC in the range from 12 to 36 V
This is somewhere 55 - 166A !!!

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