A DC half-bridge induction cooker is used to boil water. The principle is that the DC power supply is converted into high-frequency alternating current through the half-bridge circuit, which generates an alternating magnetic field. When a metal container with water is placed on the induction cooker, eddy currents are induced in the metal container due to the alternating magnetic field, resulting in heat generation and heating the water.
Here is a simple description of the process:
- The DC power is input to the half-bridge circuit.
- The half-bridge circuit switches on and off rapidly to generate high-frequency AC.
- The high-frequency AC creates an alternating magnetic field around the induction cooker coil.
- The metal container absorbs the energy of the alternating magnetic field and converts it into heat through eddy currents.
- As the heat accumulates, the water in the container gradually heats up and eventually boils.
For example, when you place a pot filled with water on the induction cooker and turn it on, you can see the water starting to bubble and steam rising as it reaches the boiling point. Different induction cookers may have different power and control mechanisms to achieve efficient water boiling.