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    超声波发生器的工作原理
    2015-6-1 10:56:20

    超声波发生器的原理
    The principle of ultrasonic generator
    首先由信号发生器来发生一个特定频率的信号,这个信号可以是正弦信号,也可以是脉冲信号,这个特定频率就是换能器的频率,一般在超声波设备中使用到超声波频率为25KHz28KHz35KHz40KHz1OOKHz或以上现在尚未大量使用.但随着以后精密清洗的不时发展,相信使用面会逐步扩大.
    First by the signal generator to a particular frequency signal, this signal can be a sine signal, also can be the pulse signal, the specific frequency is the frequency of the transducer, commonly used in ultrasound equipment to ultrasonic frequency for more than 25 khz28khz35khz40khz1ookhz or has not yet been heavily used now. But with the development of precision cleaning from time to time later, believe in the use of surface will be gradually expanded.
    功率放大器可有多种形式,如电子管甲类放大器.甲乙类放大器;晶体管甲类或乙类放大器(均属于模拟式)晶体管开关式放大器等,功率一般从50W5000W不等,由信号发生器产生的频率信号经过功率放大器后需经过阻抗匹配,使得输出的阻抗与换能器相符,推动换能器将电信号转换为机械振动.
    Power amplifier can take many forms, such as tube class a amplifier. Class ab amplifier. A or b transistor amplifier, all belong to the analogue transistor switch amplifier, power generally ranging from 50 w5000w, produced by signal generator frequency signal after power amplifier has been impedance matching, make the output impedance match the transducer, push the transducer converts electrical signals into mechanical vibration.

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