Piezoelectric audible sound generator

Details Piezoelectric audible sound generator Piezoelectric audible sound generator

1981-03-16

1983-07-12

Crosland, Donnie L.

Communications: electrical

Audible indication

Ultrasonic pest control

340384R, 340692, 367167, 367172, 116137R, 116DIG19, 179110A, 331 78, 310322, G08B 300, H01L 4104

Patent

active

043933734

ABSTRACT:
A piezoelectric audible sound generator having a feedback type piezoelectric transducer, an amplifier, and a phase compensator for adjusting the phase shift due to the combination of a bias resistance of the amplifier and equivalent capacitance of the piezoelectric transducer.

REFERENCES:
patent: 3815129 (1974-06-01), Sweany
patent: 4275388 (1981-06-01), Hornung
patent: 4303908 (1981-12-01), Enemark et al.

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