The current transformer in the induction cooker has 4 pins, of which the resistance is the least
The two feet (basically 0Ω) are the primary, and the other two feet are the secondary resistance, which is generally 40-150 Ω.
The function of the current transformer is to detect the current of the induction cooker at all times, it converts the current change of the whole machine into the corresponding voltage change, and the voltage change is sent to the CPU after rectification and filtering, and then the CPU sends out the corresponding PWM square wave pulse duty ratio, so that the power tube timely adjusts the input power, so as to realize the automatic regulation of the corresponding heating power of the induction cooker. If the current transformer is damaged, the primary or secondary winding is usually short-circuited or burned.