1. The main control circuit of the analog control induction heating equipment adopts analog circuit control and 0~5V power adjustment. Disadvantages of this type of equipment: poor temperature control accuracy, poor IGBT zero-crossing control, high power consumption of core power components, easy to damage, The main circuit often changes with the workpiece, the equipment does not work in the resonance state, and the output efficiency is low. It is only used for occasions where the heating temperature is not high, and has been gradually eliminated in the society. Induction heating equipment 2. Intelligent induction heating equipment A new generation of intelligent induction heating equipment: using digital circuit control, high temperature control accuracy, IGBT zero-crossing point is accurately controlled in the switching state, the main circuit resonant frequency is automatically tracked, and the load can be automatically adapted to the change of the workpiece. Make sure that the circuit is in resonance, so that the output of the whole device is extremely efficient. The intelligent induction heating equipment has the following characteristics: 1. Control core part: generally adopts the world's most advanced high-speed digital signal processor (HDSP), and uses a dedicated chip as an auxiliary processor. 2. The inverter device generally adopts the high-efficiency and fast resonance control method, the inverter efficiency is greater than 95%, and the power factor of the host is greater than 0.9. 3. The equipment has a design structure that combines air cooling and water cooling. 4. Control method: all-digital high-efficiency and fast resonance, sensors that can adapt to various parameters, and the power supply of intelligent equipment generally has a built-in digital PID temperature control module. 5. With IO interface: analog output, analog input, IO output and IO input interface, RS232 or RS485 communication interface. 6. The communication interface can be connected to a special data recorder. 7. Power adjustment adjustment method: stepless adjustment, can be adjusted from 0% to 100%, the resolution is 0.1% or 0.01%, and the output stability can reach 0.3% or 0.025%. Induction heating equipment 3. Induction melting equipment series use: mainly used in melting steel, iron, copper, aluminum and alloys, etc., with high melting efficiency, good power saving effect, uniform metal composition, less burning loss, fast temperature rise, easy temperature Control and other characteristics, suitable for various metal smelting occasions. Features: 1. Constant power output, faster melting speed and more obvious power saving effect. 2. The zero-voltage sweep frequency software is started, which can better meet the requirements of frequent start-up. 3. Comprehensive protection measures, such as overcurrent, overvoltage, current limiting, voltage limiting, water shortage, lack of equal protection, make the equipment run reliably under the premise of ensuring the melting speed. 4. Simple operation, suitable for various casting processes. Detailed explanation of the induction heating principle of induction heating equipment Induction heating is to use the method of electromagnetic induction to generate electric current inside the heated material, and rely on the energy of these eddy currents to achieve the purpose of heating. The basic components of an induction heating system include an induction coil, an AC power source and a workpiece. Depending on the heating object, the coil can be made into different shapes. The coil is connected with a power source, and the power source provides alternating current to the coil, and the alternating current flowing through the coil generates an alternating magnetic field passing through the workpiece, and the magnetic field causes the workpiece to generate eddy currents to heat. Simply put, it is to generate an alternating current, thereby generating an alternating magnetic field, and then use the alternating magnetic field to generate eddy currents to achieve the effect of heating. The commonly used induction heating equipment mainly includes the three introduced by Xiaobian to netizens. The induction heating principle is roughly the same. I hope it can help netizens in need!