Ultrasonic generator principle

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Introduction: Ultrasonic generator , as its name suggests, is a device for emitting ultrasonic waves. So the question is, how does it emit ultrasonic waves? How does it work? Let's take a look How exactly does it prove that the " ultrasonic generator " is the " ultrasonic generator "~

First, the principle of ultrasonic generator - - Introduction

An ultrasonic generator is a device that converts utility power into a corresponding high-frequency alternating current of a transducer to drive a transducer, and is an important component of a high-power ultrasonic system, and can also be called an electronic box. Ultrasonic drive power supply, ultrasonic controller. Although the ultrasonic generator can also be referred to as an ultrasonic driving power source, in reality, the ultrasonic generator is only a part of the ultrasonic driving power source. Ultrasonic power can be divided into self-excited and excited according to different excitation modes, and ultrasonic generator refers to its ultrasonic power supply, because its excited oscillation circuit is more than 10% higher in self-excited output power. Therefore, most of the ultrasonic generators currently used as the driving power source.

Second, the principle of ultrasonic generator

The input of the ultrasonic generator is a fixed frequency signal. The waveform of the signal is indefinite, sinusoidal and pulseable, but its frequency is fixed to the frequency of the transducer, generally 20, 25, 28, 33, 40, 60 KHz. Through the internal conversion of the ultrasonic generator, its output is a power signal, a frequency tracking signal, and the like.

Since the output signal exhibits an unstable state as the input signal changes, a feedback portion is also included in the part of the ultrasonic generator, and the feedback effect is mainly embodied in two aspects. On the one hand, the change of the input signal leads to the instability of the output power, which makes the mechanical vibration of the transducer irregular, resulting in poor cleaning effect. After adding the feedback part, the power feedback signal adjusts the output power so that it does not follow the input signal. The change of the change, showing a stable state, the regular mechanical vibration of the transducer makes the cleaning effect better. On the other hand, the transducer frequency is the most efficient at the resonance frequency point, but in the actual situation, it cannot be always working in the optimal state for various reasons, so the feedback part plays its role, providing the frequency tracking signal, and controlling The signal from the signal generator is always at the resonant point of the transducer, allowing it to operate at its optimum.

Third, the principle of ultrasonic generator - - Features

In addition to the above, the output power can be adjusted to stabilize and the frequency is adjusted so that the transducer is always in the optimal state. The ultrasonic generator can also monitor the power and operating frequency of the high-power ultrasonic system, and can automatically follow the setting parameters. Frequency, the amplitude can be controlled to be stable when the load changes, and an alarm can be issued to protect the system equipment when the situation is bad. It is believed that with the continuous development of technology, the ultrasonic generator will become more and more powerful, and gradually improve more functions.

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