Zero-cross detection circuit and equipment and high-frequency induction power supply system

• Main Authors: YANG YONGYUE, HUANG MENG, CHEN MANLIN, FU PENGLIANG, QI YUSHENG, JIANG YINGYI
• Format: Patent
• Language: Chinese; English
• Published: 26.10.2021
• Subjects: MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

The invention relates to a zero-cross detection circuit and equipment and a high-frequency induction power supply system, and belongs to the technical field of zero-cross detection. According to the zero-cross detection circuit and equipment and the high-frequency induction power supply system, differential processing and interference removal are conducted on accessed high-frequency signals through a differential module, and a target high-frequency signal is obtained; the target high-frequency signal is compared with the zero-value signal through a comparison module to obtain a square-wave signal; and shaping processing is carried out on the square-wave information through a waveform shaping module to obtain a zero-cross detection signal. The resistance value of a pull-down resistor in the waveform shaping module is set to be 3-20 times of the resistance value of a pull-up resistor, so that the rising edge speed and the falling edge speed of the square-wave signal are increased, and the waveform of a square w