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彩电用超声延迟线是由压电陶瓷材料制成的一种延迟器件。其主要由玻璃介质和输入、输出换能器组成,输入信号经换能器转换为机械振动,并在玻璃介质内形成具有方向性的超声波束,最后由输出换能器吸收其波束能量再转换为电信号输出。在检测超声延迟线时,若有条件可使用扫频仪检测其特性曲线,未检测到此曲线,则表明该延迟线已损坏;而用万
Color TV with ultrasonic delay line is made of piezoelectric ceramic material as a delay device. It is mainly composed of glass medium and input and output transducers. The input signal is transformed into mechanical vibration by transducer, and a directional ultrasonic beam is formed in the glass medium. Finally, the output transducer absorbs the beam energy and then transforms For the electrical signal output. In the detection of ultrasonic delay line, if conditions can be detected using the swept characteristic curve, not detected this curve, it shows that the delay line has been damaged; and with million