2000W 33khz Digital Ultrasonic Signal Generator Module Push away for parts cleaner machine

In view of the advantages of good effect, high efficiency and low cost of ultrasonic cleaning, Ultrasonic cleaning is widely used in electronics, machinery, watches, optics, medical treatment, chemical fiber, electroplating and other industries [1]. In ultrasonic cleaning equipment, ultrasonic power supply is one of its important components. Most of the existing ultrasonic power supplies use dedicated integrated control chips (such as SG3525, TL494) or microcontrollers to generate PWM pulse signals. After power amplification, impedance, and tuning matching, the transducer is pushed to convert the electrical signal into mechanical vibration, generating ultrasonic waves. Both of these power sources have their own limitations. The former control method has slow dynamic response, inconvenient parameter adjustment, and severe temperature drift [2]. However, using a microcontroller to directly generate PWM signals can achieve high-precision and high stability control characteristics, and achieve flexible and diverse control functions. However, due to the limitations of its operating frequency, the frequency resolution of the output PWM signal is low, making it difficult to meet frequency fine tuning. In view of the above problems of ultrasonic power supply, this paper develops a digital ultrasonic power supply with stable performance, simple control and adjustment, and low cost based on PWM technology, using single-chip microcomputer and Linear integrated circuit to form an intelligent control system.