Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Patent
1984-08-14
1987-02-03
Budd, Mark O.
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
310316, 2391022, H01L 4108
Patent
active
046410538
ABSTRACT:
In an ultrasonic liquid atomizer, an oscillator has a transistor and a resonant circuit a part of which is formed by a piezoelectric vibrator mounted in an energy transfer relationship with liquid in a chamber. The transistor and the resonant circuit receive a full-wave rectified supply voltage to generate ultrasonic energy in the vibrator in the presence of a bias voltage. A soft start circuit has a time constant circuit responsive to the bias voltage and a transistor responsive to an output of the time constant circuit which provides switching action in phase with the full-wave rectified supply voltage so that ultrasonic energy is generated in the form of a series of bursts having durations gradually increasing as a function of time during an initial brief interval from application of the bias voltage to the oscillator. A bias stabilizer has a second time constant circuit responsive to the bias voltage and a transistor connected to the output of the second time constant circuit to establish a low impedance path across the base and emitter of the transistor of soft start circuit after termination of the initial brief interval.
REFERENCES:
patent: 4319155 (1982-03-01), Nakai et al.
patent: 4520289 (1985-05-01), Sato et al.
Budd Mark O.
Matsushita Seiko Co., Ltd.
LandOfFree
Ultrasonic liquid atomizer with an improved soft start circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Ultrasonic liquid atomizer with an improved soft start circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ultrasonic liquid atomizer with an improved soft start circuit will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1092651