How ultrasonic power works
Usually called ultrasonic power box, ultrasonic source, and ultrasonic power. Its function is to convert our mains (220V or 380V, 50 or 60Hz) into a high frequency AC signal that matches the ultrasonic transducer. From the form of the amplifying circuit, a linear amplifying circuit and a switching power supply circuit can be used, and a high-power ultrasonic power source generally adopts a circuit form of a switching power supply in terms of conversion efficiency. Linear power supplies also have their own range of applications. It has the advantage of not requiring strict circuit matching and allowing continuous and rapid changes in operating frequency. From the current situation in the ultrasound industry, ultrasound is mainly divided into self-excited and its exciting power supply.
The ultrasonic generator adopts the world's leading other shock oscillating circuit structure. Compared with the previous self-excited oscillating circuit structure, the output power increases by more than 10%, and the electrical performance meets the technical standard (factory standard) provided by Party A.
The principle of the ultrasonic generator is to first generate a signal of a specific frequency by the signal generator. The signal of the ultrasonic generator can be a sinusoidal signal or a pulse signal. The specific frequency is the frequency of the transducer, and is generally applied to the ultrasonic wave. The ultrasonic frequency in the device is 20KHz, 25KHz, 28KHz, 33KHz, 40KHz, 60KHz; 100KHz or above is not yet widely used. However, with the continuous development of precision cleaning. I believe that the use of the face will gradually expand.
Second, the ultrasonic generator feedback signal
The ultrasonic generator with better output power signal should also have feedback link, mainly providing feedback signals in two aspects: The first one is to provide the output power signal, we know when the power supply (voltage) of the generator changes. The output power of the generator will also change. At this time, it is reflected in the transducer that the mechanical vibration is suddenly large and small, resulting in unstable cleaning effect. Therefore, it is necessary to stabilize the output power, and the power amplifier is adjusted correspondingly by the power feedback signal, so that the power amplification is stable.
Frequency tracking signal
The second is to provide a frequency tracking signal. When the transducer works at the resonant frequency point, its efficiency is the highest, the work is the most stable, and the resonant frequency point of the transducer changes due to assembly reasons and work aging. Of course, the frequency of this change is only drift, and the change is not very large. The frequency tracking signal can control the signal generator to make the frequency of the signal generator track within a certain range.
The resonant frequency point of the transducer. Let the generator work at its best. Of course, with the development of modern electronic ultrasound technology, especially microprocessor (uP) and signal processor (DSP), the function of the generator is more and more powerful, but no matter how it changes, its core function should be as described above. Content, only the ultrasound technology is different when each part is implemented.
Third, the ultrasonic sounder function
1, frequency fine-tuning function
The ultrasonic generator has the function of fine-tuning the frequency, the adjustment range is 2%, and the adjustment is slightly adjusted under different working conditions, so that the transducer always works at the best state, the conversion efficiency is maximized, and the maximum can be achieved under different working conditions. Good effect.
2, sweep function
The ultrasonic generator has a frequency sweeping function, and the ultrasonic frequency is reciprocally swept in a reasonable range during the cleaning process to drive the cleaning liquid to form a fine reflow, so that the workpiece dirt is quickly taken away from the workpiece surface while being ultrasonically peeled off, thereby improving the cleaning efficiency.
3, power adjustment function
The ultrasonic generator has the function of power regulation, and the output power can be continuously adjusted from 10% to 100% to meet the requirements of various cleaning objects.
Fourth, ultrasonic sounder classification
Summary - can be divided into frequency adjustable ultrasonic generator, 100W / 300W ultrasonic generator, low power ultrasonic generator, high frequency ultrasonic generator, large function ultrasonic generator, digital display ultrasonic generator.
1, frequency adjustable ultrasonic generator | sound wave transmitter
The new power is adjustable from "0" to 3000 watts, and the frequency is from 20KHZ to 40KHZ.
Adjustable ultrasonic generator. The ultrasonic generators can be shared using different transducers. The structure is reasonable, so as to prevent moisture, impact, fire, and operation. People who have never used an ultrasonic cleaner and who do not understand the frequency power, as long as they have a little electrician common sense, will see it.
2, 100W/300W ultrasonic generator
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