on video How to make a Simple and Powerful induction soldering iron

How to make a Simple and Powerful induction soldering iron 

Story

Induction heaters are trending the new market nowadays. They are cheap but the cost of maintenance is quite high. They are able to draw a very high current from the supply. Then use induction phenomena to heat the material. TO be more specific about the design of induction, they use a big coil, MOSFET and some oscillator circuity. Induction is modified form of inducing current into second conductor.

Coils can produce voltage across the terminal when placed in moving magnetic field. And by the same method a noticeable amount of voltage drop can be measured in the coil when placed near to an oscillating coil. The same amount of magnetic flux is induced in the secondary coil. But there are some current losses given by eddy current. PCB of this project is sponsored by

Induction working:

I follow the induction tutorial by electronoobs, here you find the one. He explained the working and circuit designing. Also, the animations made by him are really increase the understanding. In this he explained the working of induction heater. But we are going to build an induction soldering iron so there might be some changes in circuit.

I just skipped the working part here, but a change in circuit is that instead of using the secondary coil we are using a copper wire of 1mmx 3. You will find the building instruction of this soldering iron below in detail.

Components required:

1) Ferrite core

2) 1mm copper enameled wire

3) IRFZ44N Mosfet

4) 1uf polyester film capacitors

5) 10k, 470-ohm resistors

6) Tactile button

7) Power supply 10 amperes

I used MOSFET for alternate switching, 2 fast switching diodes are connected to the gate terminals. 10k and 470 ohms resistor for proper biasing and a tactile button for switching on/off. I also made a place for USB type C but I think this is not able to work with such a high ampere

2 polyester film 1uf capacitors with 200uh coil forms the LC filter. A special output coil is made from a long ferrite core. This circuit is very stable and MOSFET don’t heat too much but keep the voltage under 15 volts and current can be limited to a maximum of 5Amperes.

LC filter making:

This consists a ferrite inductor and polyester capacitors. I used 200uh inductor and it is made using a 1cm x 0.7 cm round toroidal ferrite core. You may find the one in old CFL bulb.

I made 15 turns of 0.6mm wire in clock wise direction. You can make the coil according to the used wire. Online coil calculators are also available to predict the value of number of turns and thickness of wire. Here I am using 400volt capacitors, higher the ratings better are the output and overall protection.

How to make a coil:

For the main output coil, a big toroidal coil is need and instead of using a round ferrite core I am using a long length core. You can find this one in the old laptop charge cable or in any old tv cable.

 

How to make a Simple and Powerful induction soldering iron 

Story

Induction heaters are trending the new market nowadays. They are cheap but the cost of maintenance is quite high. They are able to draw a very high current from the supply. Then use induction phenomena to heat the material. TO be more specific about the design of induction, they use a big coil, MOSFET and some oscillator circuity. Induction is modified form of inducing current into second conductor.

Coils can produce voltage across the terminal when placed in moving magnetic field. And by the same method a noticeable amount of voltage drop can be measured in the coil when placed near to an oscillating coil. The same amount of magnetic flux is induced in the secondary coil. But there are some current losses given by eddy current. PCB of this project is sponsored by

Induction working:

I follow the induction tutorial by electronoobs, here you find the one. He explained the working and circuit designing. Also, the animations made by him are really increase the understanding. In this he explained the working of induction heater. But we are going to build an induction soldering iron so there might be some changes in circuit.

I just skipped the working part here, but a change in circuit is that instead of using the secondary coil we are using a copper wire of 1mmx 3. You will find the building instruction of this soldering iron below in detail.

Components required:

1) Ferrite core

2) 1mm copper enameled wire

3) IRFZ44N Mosfet

4) 1uf polyester film capacitors

5) 10k, 470-ohm resistors

6) Tactile button

7) Power supply 10 amperes

I used MOSFET for alternate switching, 2 fast switching diodes are connected to the gate terminals. 10k and 470 ohms resistor for proper biasing and a tactile button for switching on/off. I also made a place for USB type C but I think this is not able to work with such a high ampere

2 polyester film 1uf capacitors with 200uh coil forms the LC filter. A special output coil is made from a long ferrite core. This circuit is very stable and MOSFET don’t heat too much but keep the voltage under 15 volts and current can be limited to a maximum of 5Amperes.

LC filter making:

This consists a ferrite inductor and polyester capacitors. I used 200uh inductor and it is made using a 1cm x 0.7 cm round toroidal ferrite core. You may find the one in old CFL bulb.

I made 15 turns of 0.6mm wire in clock wise direction. You can make the coil according to the used wire. Online coil calculators are also available to predict the value of number of turns and thickness of wire. Here I am using 400volt capacitors, higher the ratings better are the output and overall protection.

How to make a coil:

For the main output coil, a big toroidal coil is need and instead of using a round ferrite core I am using a long length core. You can find this one in the old laptop charge cable or in any old tv cable.