Ultrasonic power generator In the power ultrasonic equipment, the matching design of ultrasonic power supply and transducer is very important, which largely determines whether the ultrasonic equipment can work normally and efficiently. The matching between ultrasonic power supply and transducer includes two aspects: impedance matching and tuning matching.

The ultrasonic power generator achieves maximum electrical power while maintaining load, and the purpose of tuning and matching is to make the transducer as close as possible to the pure resistance state and reduce reactive power components. When piezoelectric ultrasonic transducers operate near their resonant frequency, they are generally capacitive due to the influence of static capacitance. If the signal source is directly connected to the transducer, a portion of the reactive power component will be generated, resulting in a relative decrease in the active power of the transducer. Therefore, it is necessary to match the opposite inductance at the output end of the ultrasonic power supply to make its load a pure resistor.

The ultrasonic power generator uses a designed ultrasonic power supply for experiments, adjusts the inductance to make the tuning circuit work at a frequency of 40kHz, and measures the primary voltage and current waveform of the output transformer as shown in Figure 7. From the figure, it can be seen that the current waveform is basically a sine wave, and the current and voltage phases are consistent, which effectively achieves frequency tracking function. The power supply is stable and reliable during long-term high-power continuous operation, and the switch tube, absorption circuit, and heat sink do not generate heat.

Piezoelectric Industrial Ultrasonic Generator Sweep Frequency Ultrasonic Generator Box Power Supply