Buzzer with electronic integrated oscillation circuit

Details Buzzer with electronic integrated oscillation circuit Buzzer with electronic integrated oscillation circuit

1978-01-23

1979-07-31

Pitts, Harold I.

Communications: electrical

Audible indication

Ultrasonic pest control

340388, 340384E, G08B 300

Patent

active

041632230

ABSTRACT:
A buzzer comprises a vibration unit, an electromagnet transducer for applying an electromagnetic excitation to the unit, and an electronic oscillation circuit for driving the transducer. The oscillation circuit includes a group of electrical components which constitute a blocking oscillator together with the coil assembly of the transducer and which are contained on a bipolar integrated circuit module. The module is mounted on the coil bobbin of the transducer.

REFERENCES:
patent: 3950744 (1976-04-01), Stephens

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