Device to operate a piezoelectric ultrasonic transducer

Details Device to operate a piezoelectric ultrasonic transducer Device to operate a piezoelectric ultrasonic transducer

1986-07-15

1987-10-27

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

318116, 2391022, H01L 4108

Patent

active

047032138

ABSTRACT:
An Ultrasonic Piezoelectric Transducer for atomizing fluids oscillates at its free natural vibration in a parallel resonant circuit. Very short energy pulses are transmitted into the parallel resonant circuit to maintain continuously the free vibration. The measuring the time dependant voltage of the transducer, the transducer vibration frequency is tapped off to regulate the supplied pulses and to transmit them in proper phases. Thus, optimal atomizing is guaranteed in spite of changing operating conditions.

REFERENCES:
patent: 3842340 (1974-10-01), Brandquist
patent: 3889166 (1975-06-01), Scurlock
patent: 4264837 (1981-04-01), Gaboriaud
patent: 4271371 (1981-06-01), Furvichi et al.
patent: 4275363 (1981-06-01), Mishiro et al.
patent: 4277758 (1981-07-01), Mishiro
patent: 4445063 (1984-04-01), Smith

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