Published:2011/7/5 1:28:00 Author:zj | Keyword: The subsonic, remote control, lamp switch circuit | From:SeekIC
As shown in the figure ultrasonic remote control lamp switch circuit uses digital integrated circuit, which is composed of acoustic wave transducer, amplifier and general digital integrated circuit. In the graph, L is a 2.2mH inductance; 18kHz subsonic generator adopts a rubber ball puffer type ultrasonic horn. The acoustic transducer B can use CRZ2-113F ordinary electret capacitor microphone.
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