Chime tone audio system utilizing a piezoelectric transducer

Details Chime tone audio system utilizing a piezoelectric transducer Chime tone audio system utilizing a piezoelectric transducer

1978-06-08

1980-07-15

Pitts, Harold I.

Communications: electrical

Audible indication

Ultrasonic pest control

340384R, G08B 300

Patent

active

042131219

ABSTRACT:
An audible signalling system utilizes a piezoelectric transducer to produce a chime tone audible signal. The system includes audible signalling circuitry, circuitry for driving the audible signalling circuitry to provide a pulsed audible signal, and circuitry for exponentially decaying the pulsed audible signal to produce a chime tone audible signal.

REFERENCES:
patent: 3569963 (1971-03-01), Mallory
patent: 3573630 (1971-04-01), Baer
patent: 4001816 (1977-01-01), Yamada
patent: 4104628 (1978-08-01), Sweany

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