Ultrasonic power supply for focused ultrasound nucleic acid interrupter

Abstract

Provided is an ultrasonic power supply for a focused ultrasound nucleic acid interrupter. The invention relates to the technical field of ultrasonic application, and discloses an ultrasonic power supply for a focused ultrasound biological sample processing instrument, which comprises a main control board, a power amplifier circuit module, a program-controlled voltage-stabilized power supply, a transformer and a transducer matching module. The main control board outputs a corresponding frequency signal required by an ultrasonic transducer, a power electric signal of the corresponding frequencyis obtained after the corresponding frequency signal passes through the power amplifier circuit module, and an electric signal suitable for driving the ultrasonic transducer is obtained after the power electric signal passes through the transformer and the transducer matching module, so that the ultrasonic transducer emits ultrasonic waves. The program-controlled voltage-stabilized power supply provides a direct-current power supply for the power amplifier circuit module. The main control board can adjust the voltage output of the program-controlled voltage-stabilized power supply, so that theamplitude of an output voltage signal of the power amplifier circuit module can be indirectly adjusted. The ultrasonic transducer emits ultrasonic waves with different intensities due to electric signals with different amplitudes. Therefore, the power of the ultrasonic waves can be adjusted.

Description

technical field [0001] The invention relates to the technical field of ultrasonic applications, in particular to an ultrasonic power supply for a focused ultrasonic biological sample processing instrument. Background technique [0002] Ultrasonic power supply is also called ultrasonic driving power supply and ultrasonic generator. Its function is to convert the mains power into a high-frequency AC signal that matches the ultrasonic transducer, drive the ultrasonic transducer to work, and provide ultrasonic energy for it. [0003] Focused ultrasound biological sample processing instrument is a device that uses ultrasonic waves emitted by ultrasonic power sources to process biological samples, including but not limited to nucleic acids and their fragments, protein or amino acid fragments, eukaryotic cells, paraffin-embedded sections, fungi, bacteria . When working, it uses hundreds of KHz high-frequency ultrasound to cut biological samples into the required fragment length or...

AI Technical Summary

Problems solved by technology

[0006] 1. The driving power supply uses IGBT. Due to the limitation of the performance of the component itself, only a frequency of tens of KHZ can be obtained.

[0007] 2. The rectified DC power supply voltage is fixed, and the output power cannot be finely adjusted

[0008] 3. It needs to be equipped with frequency tracking circuit and control method to ensure that the transducer works in a resonant state. It needs a process of adjustment to stability. Frequency tracking is generally to obtain the maximum power. The frequency of each adjustment will be slightly different, so it is not conducive to maintaining Consistency of Focused Ultrasound Biological Sample Processing Instruments in Processing Experimental Samples

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