• Skip to main content
  • Skip to primary sidebar

Making Easy Circuits

Learn and build electronic circuits

You are here: Home / High Voltage / Simple Induction Heater Circuit

Simple Induction Heater Circuit

Last Updated on January 10, 2018 by Admin 49 Comments

The concept of the proposed simple induction heater circuit is straightforward. The coil generates high-frequency magnetic flux and then metal things in the the coil produces eddy currents which can be found warming it.

The hysteresis drawdowns additionally help cause the heating. Possibly even for an undersized coil such as this a current around 100A is commonly employed, consequently, in suggestive of with the coil you will find a resonant capacitance, which makes up their inductive nature.

Coil-capacitor circuit ought to be powered at their resonant frequency. The motivation current is significantly less than the current throughout the coil. The power source is a straightforward MOSFET Half Bridge regulated by circuit IR2153. The MOSFETs possess a compact heatsink.

Driving frequency is tuned to resonance by potentiometer. The resonance is determined by a neon light bulb. The frequency could be regulated in the area of approximately 20 to 200 kHz.

The control circuit necessitates auxiliary voltage of 12-15Vdc. I will be employing an undersized building wall socket power supply, however simply because just few mA can be used, feel free to use precipitating resistor or capacitor.

Mainly because the output driver might not be associated straight in, you can find a complementing choke in succession. It includes around twenty turns 1.5 mm diameter on a 8x10 mm ferrite core as well as the strength may be established by modifying the air gap.

The induction heating is operated straightly from electrical grid. It will be implementing full-wave rectified voltage with no filtration electrolytic capacitor. A light bulb is attached in series to reduce the current and help save the circuit in error situation, overload or undesirable performance.
Work coil of induction heating needs to be sturdy copper wire or more desirable a copper tube and possesses approximately 12 - 30 turns on a 3 - 10 cm diameter.

Resonance capacitor is as a result of the large amperage crafted from numerous (at least 6) capacitors. Inside my example, the coil carries 26 turns and capacitors is 6 x 330n 250V~.

Together are getting piping-hot after extended workings. The resonance frequency is approximately 29 kHz. My resonant circuit is built quickly, with a bit of added trial and error it is possible to arrive at significantly better end results.

This really is my very first experience at simple induction heater circuit

 

Simple Induction Heater Circuit

 

induction

You'll also like:

  • 1.  How to Make a Strong RF Discharge Circuit
  • 2.  Voltage Stepper Circuit or Voltage Booster Circuit
  • 3.  Generator Mains Power Booster Circuit
  • 4.  How to Convert 12 V to 19 V using Boost Converter Circuit
  • 5.  3V to 110/220V Converter Circuit
  • 6.  220 V Touch Switch Lamp Circuit

About Admin

Hey friends, Thanks a bunch for stopping by this site! I am an engineer with a Bachelor of Engineering in Electronics and Telecommunication. One of my passions is gathering information from all sorts of electronics books and tutorials. I then take that information and compile it into a language that is super easy to understand. My goal is to make those complex electronics circuit concepts and technical terms much more accessible for all the new and budding electronics engineers out there. I can also design customized circuit diagrams as required by the users.
If you have any questions related to this field, please do not hesitate to drop a comment! I am always here and ready to help you out with any queries you might have. I cannot wait to hear from you!

Reader Interactions

Comments

  1. ambareesh says

    March 29, 2024 at 9:50 am

    can i transform this parallel resonance to series resonance?

    Reply
    • admin says

      April 3, 2024 at 10:13 pm

      You can do but the circuit configuration will change…

      Reply
  2. Ambareesh says

    March 26, 2024 at 5:33 pm

    could you please tell me4.7 nf and 4.7 ohm resistor are used in parallel with capacitor and coil?

    Reply
    • admin says

      March 27, 2024 at 11:52 am

      Yes, but before the TL….

      Reply
  3. ambareesh says

    December 19, 2023 at 1:43 pm

    i would like to know what is the maximum power of the induction heater

    Reply
    • admin says

      December 21, 2023 at 10:41 am

      Around 200 watts, but can be increased by upgrading MOSFET and work coil

      Reply
      • ambareesh says

        January 2, 2024 at 10:10 am

        Instead of irf 840 i would like to use irf260n,which has a drain current of 50 A.using this can i increase the input power.what modification can be made to upgrade this to 1500 watts.

        Reply
        • admin says

          January 9, 2024 at 9:28 am

          Yes, that looks feasible, but the work coil wire thickness will also need to be upgraded accordingly….

          Reply
          • ambareesh says

            January 10, 2024 at 2:03 pm

            what about the gate resistor and IC,tank capacitor values.

          • admin says

            January 11, 2024 at 9:25 am

            everything is given in the diagram and the article.

          • ambareesh says

            January 10, 2024 at 4:26 pm

            what is the L value of your work coil?

          • admin says

            January 11, 2024 at 9:24 am

            L is not required because the number of turns, and diameter is already given.

  4. Rafael says

    July 23, 2023 at 7:41 pm

    I wonder if I can insert a pipe into the induction coil. Can I use the heater as a water heater. How long can it works heating?

    Reply
    • admin says

      July 31, 2023 at 6:58 pm

      Yes you can do that. The heater will work as long as it connected to the power supply

      Reply
  5. Kcoolguy says

    December 17, 2022 at 1:47 pm

    Thanks Admin ????
    I’m going to make it.

    Reply
  6. antonio clemente says

    August 26, 2022 at 12:01 am

    good afternoon what is the value of the diode between pins 1 and 8 and now what is the value of the tank capacitors.

    Reply
    • admin says

      September 4, 2022 at 11:12 am

      diode can be FR107 or BA159….capacitors are 330nF each

      Reply
  7. Cell says

    March 3, 2022 at 6:11 pm

    What do you mean by “The control circuit necessitates auxiliary voltage of 12-15Vdc. I will be employing an undersized building wall socket power supply”? you said as far as I can tell, you supplied the IC with around 300V DC, (assuming the mains is 230V AC). and you used 250V~ capacitor

    Reply
  8. Kishor Soni says

    December 21, 2021 at 2:45 pm

    What about TL. nothing written about TL in text

    Reply
    • admin says

      December 28, 2021 at 10:10 am

      It is a current limiting coil…20 turns of 1 mm copper wire on any ferrite core will work.

      Reply
  9. Diana says

    January 27, 2021 at 10:24 pm

    Hello. I’m currently trying to make the same project. One short question, is it possible to use electrolytic capacitor for resonance, if no what is the reasoning for that? Also, why are you using many capacitors instead of using one of higher value?

    Reply
    • admin says

      February 6, 2021 at 10:07 am

      No, electrolytic capacitor cannot be used here….only metallized polyester because electrolytic can start leaking due to high current and high voltage and high frequency…also the capacitor must be strictly non-polar…

      one capacitor will heat up and burn

      Reply
  10. TedyArch says

    October 24, 2020 at 8:51 am

    1. whats DT ?? before capacitor bank ??
    2. can i change capacitor 0.47uF with 5uf ?

    Reply
    • admin says

      October 26, 2020 at 12:45 pm

      DT refers to a neon bulb.
      0.47uF can be replaced with 5uF, because 5uF is 10 times more than 0.47uF

      Reply
  11. Welensky says

    June 19, 2020 at 11:59 am

    can i have typical values for the limiting inductor

    Reply
    • admin says

      June 19, 2020 at 7:19 pm

      You can try 1 mH. It is just a current limiter coil

      Reply
  12. Sebastian says

    January 16, 2020 at 7:09 pm

    En el diagrama electronico el pin 1 del IR2153 deberia estas conectado a los catodos del puente rectificador??,ademas es posible agregarle una limitación de corriente??

    Reply
  13. D RAMESH says

    August 22, 2019 at 3:38 pm

    dear sir, why cant an induction emf road way developed ?

    Reply
    • admin says

      August 31, 2019 at 11:34 am

      How, please elaborate??

      Reply
  14. hamed says

    August 21, 2019 at 11:16 pm

    Hi dear friend. I want to use this circuit to heat water as an electric water heater. Is it possible to do this? Shouldn’t the pin # 1 IC be connected to the power supply?

    Reply
    • admin says

      August 31, 2019 at 11:34 am

      Hi Hamed, yes pin#1 should be connected to the positive line, please do it in your circuit, sorry for the mistake.

      Reply
  15. hamed says

    August 21, 2019 at 11:14 pm

    Hi dear friend. I want to use this circuit to heat water as an electric water heater. Is it possible to do this? Shouldn’t the # 5 IC be connected to the power supply?

    Reply
  16. Zahid Latif says

    May 23, 2019 at 9:12 am

    Dear friends I am working industrial induction heating in plastic extrusion industry.
    I want freelance professionals to design and test induction heaters from 1000w to 50kw
    Please contact me at [email protected] we are equal ownership company

    Reply
  17. azeem says

    January 25, 2018 at 4:09 pm

    Hi,

    How much output power it can generate? can I enlarge it in terms of power so that I could reach up to say 500C in less than a minute? and if so, then what alterations I need to do with the circuit.

    and my last question: is it safe to touch the circuit components when it is ON.

    [email protected]

    Reply
    • admin says

      January 25, 2018 at 9:27 pm

      500 degrees in a minute is easily possible, you will have to enhance the coil and capacitor so that it can handle higher current may be upto 50 amps and also upgrade the input power to this level

      Reply
      • ambareesh says

        January 1, 2024 at 5:31 pm

        i have pot having 220 mm dia and 130 mm height.It is magnetic.can this pot achieve 500 deg in a minute with full of water in it?

        Reply
        • admin says

          January 9, 2024 at 9:26 am

          I don’t think that may be possible with water inside.

          Reply
      • ambareesh says

        January 3, 2024 at 10:33 am

        could you please elaborate enhancing of coil and capacitor.

        Reply
        • admin says

          January 9, 2024 at 9:30 am

          You will need to increase the coil wire thickness and test the results with trial and error.

          Reply
  18. Ivan says

    August 24, 2017 at 4:03 am

    I would like to make an induction heater for an school project, can someone of this blog healp me with diagrams.
    Thanks for everything

    This is my e-mail [email protected]

    Reply
    • admin says

      August 24, 2017 at 2:06 pm

      Ivan, the idea is already presented in the above article, you can use the same and scale down the parameters for making a smaller variant

      Reply
  19. Nicos says

    May 30, 2017 at 1:33 pm

    Hello. I want to ask you if the project will operate if I powred the circuit with a 12V baytery instead of AC and rectifier. Of cource I am tallking about a low power output here.

    I make this question because I observed that there is no large capacitor after the rectifier. So, I assumed that the input power it is not fully rectifiered

    Reply
    • admin says

      May 30, 2017 at 1:50 pm

      hello, i think there’s a typo in the diagram, the 100uF associated with pin#1 of the IC must be connected to the positive rail.

      By the way a 12V battery would yield better results than an AC rectified supply

      Reply
  20. Jacob says

    April 19, 2017 at 12:48 pm

    I want tube amplifier circuit

    Reply
    • admin says

      April 19, 2017 at 3:07 pm

      tubes have become obsolete today….

      Reply
  21. Samir says

    January 15, 2017 at 8:52 pm

    my dear sir or lady Is it possible to explain to me how this circuit works and how current flows from beginning to end and the changes that occur
    With greetings and my thanks
    Samir Fathy

    Reply
    • admin says

      January 16, 2017 at 12:52 pm

      Samir, the circuit is basically a half wave bridge inverter circuit, which causes induction in the work coil by alternately energizing the LC tank at the set resonant frequency, which ultimately causes the iron load inside the coil to heat up.

      the series inductor is used for limiting excess current from entering the work coil

      Reply
    • Héctor Villicaña says

      July 30, 2021 at 10:38 pm

      Hello excelent, I have a question
      What is DT in the schematic?

      Reply
      • admin says

        July 31, 2021 at 7:58 pm

        thank you, that’s a neon bulb, you can remove it if you want!

        Reply

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

Primary Sidebar

Categories

  • 3 Phase (4)
  • 8051 Microcontroller (1)
  • Arduino (11)
  • Audio and Amplifier (102)
  • Automation (8)
  • Battery Chargers (64)
  • Bicycle Projects (4)
  • Car and Motorcycle Projects (39)
  • Datasheets (10)
  • DIY Projects (5)
  • Electrical (15)
  • Free Energy (6)
  • Games Projects (2)
  • High Voltage (14)
  • Hobby Projects (30)
  • Household Circuits (2)
  • IC 555 Circuits (5)
  • Ignition Circuits (2)
  • Indicators (50)
  • Infrared (6)
  • Inverter Circuits (29)
  • Lights and Lamps (97)
  • Medical (8)
  • Meter and Tester Circuits (38)
  • Motor Driver (17)
  • New Circuits (56)
  • Oscillators (30)
  • Pets and Pests (5)
  • Power supply (80)
  • Protection Circuits (25)
  • PWM (9)
  • Remote Control (20)
  • Security and Alarm Circuit (48)
  • Sensors and Detectors (66)
  • Signal Processor (23)
  • Solar Controller Circuits (62)
  • SSR (3)
  • Temperature Controller (20)
  • Timer (25)
  • Transformerless (7)
  • Transmitters (12)
  • Tutorials (45)
  • UPS (2)
  • Voltage Regulators (57)
  • Water Sensor and Controller (29)
  • Home
  • Privacy Policy
  • Contact
  • Disclaimer
  • Copyright

© 2025 · Making Easy Circuits