The induction coil is capable of extremely quickly heating metal objects. If you assemble it according to the proposed scheme, you can get an induction boiler for boiling water in a steel container such as a cup or saucepan. This is quite a working device that can be used in practice.
Low Voltage Power Induction Heater Manufacturing Process
The coil assembly will be carried out according to the presented diagram. For this, a printed circuit board is first prepared for it. 2 resistors 10 kOhm and 2 for 330 Ohm are soldered into it.
Next, a pair of IN4007 rectifier diodes is soldered into the board. Behind these is added a 1µF capacitor and a 50uH inductor.
The IRFZ44N transistors are soldered to the board according to scheme 2. Aluminum radiators are installed to cool them.
Then a core must be cut out of a metal bar, and wrapped with copper enamel wire. 10 turns will be enough. The coil is connected to the circuit. It is necessary to leave a gap between them so that the board does not heat up from the steel body.
The device is powered from a 12V source. The switched on device adheres to steel surfaces due to the magnetic field.
The heater can be fixed in this way on a metal circle, and water can be boiled in it due to the induced eddy currents.