Electricity: motive power systems – Impact – mechanical shock – or vibration-producing motors
Patent
1996-02-01
1997-08-12
Ro, Bentsu
Electricity: motive power systems
Impact, mechanical shock, or vibration-producing motors
318129, 318134, H02M 753, H02K 3300
Patent
active
056568967
ABSTRACT:
A power supply for vibrating compressors comprises a voltage booster circuit portion having voltage changing means for boosting the DC voltage of a commercially available battery and changing the boosted voltage, and an AC voltage generating circuit portion for supplying the boosted DC voltage to the vibrating compressor. The AC voltage generating circuit portion comprises a MOSFET or bipolar transistor for driving a vibrating compressor, a timer IC for generating pulses to cause the MOSFET or bipolar transistor to switch, a forced operation circuit for detecting a timing at which a counter electromotive force generated by the vibrating compressor during the OFF period of the MOSFET or bipolar transistor is recovered to the neighborhood of 0 volts and forcibly reversing the output of the timer IC, and a driver for driving the MOSFET based on the output of the timer IC or a base-current supply circuit for controlling the bipolar transistor.
REFERENCES:
patent: 4027211 (1977-05-01), Omura et al.
patent: 4320448 (1982-03-01), Okuda et al.
Akazawa Naoki
Ogiwara Kazuyuki
Ro Bentsu
Sawafuji Electric Co. Ltd.
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