ULTRASONIC DEVICE

An ultrasonic apparatus (100) includes an ultrasonic transducer (120), a transmitting circuit (110), a receiving circuit (140), a Q-factor measuring circuit (210), and a frequency measuring circuit (250). The ultrasonic transducer is a three-terminal ultrasonic transducer that includes a transmittin...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	NAKAO, Motoyasu, WATANABE, Kosuke
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ANALOGOUS ARRANGEMENTS USING OTHER WAVES DEAF-AID SETS DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS MEASURING PHYSICS PUBLIC ADDRESS SYSTEMS RADIO DIRECTION-FINDING RADIO NAVIGATION TESTING
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