Positive feedback resonant transducer circuit

Details Positive feedback resonant transducer circuit Positive feedback resonant transducer circuit

1998-07-16

2000-04-25

Dougherty, Thomas M.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310318, H01L 41107

Patent

active

060547960

ABSTRACT:
A circuit including a transformer, preferably a laminated piezoelectric transducer, in combination with a positive feedback amplifier circuit, capable of serving: 1) to produce either an audible or ultrasonic signal; or 2) as an energy source capable of driving an auxiliary high voltage device with an initial and continuing low voltage source such as a battery.

REFERENCES:
patent: 3690309 (1972-09-01), Pluzhnikov et al.
patent: 3707636 (1972-12-01), Inoue
patent: 3708701 (1973-01-01), Kowada

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