X-ray or gamma ray systems or devices – Electronic circuit – X-ray source power supply
Patent
1988-09-21
1990-05-22
Fields, Carolyn E.
X-ray or gamma ray systems or devices
Electronic circuit
X-ray source power supply
378111, 378112, 378117, H05G 134
Patent
active
049282956
ABSTRACT:
A high-voltage generating device for use with an X-ray tube comprises a converter circuit for rectifying, chopper controlling, boosting and rectifying an A.C. voltage from an A.C. power supply to apply a D.C. voltage to the X-ray tube, a tube-voltage detecting circuit for detecting a tube voltage of the X-ray tube to produce a signal corresponding to the detected tube voltage, a preset signal generator for generating a signal corresponding to a constant voltage, and a feed-back control circuit for controlling the chopper transistor of the converter circuit on the basis of the output of the preset signal generator at the start of operation and on the basis of the output of the tube voltage detecting circuit after the output of the tube voltage detecting circuit has reached a reference value.
REFERENCES:
patent: 4208584 (1980-06-01), Vogler et al.
patent: 4439868 (1984-03-01), Makino et al.
patent: 4614999 (1986-09-01), Onodera et al.
West German Patent Office Action dated Apr. 13, 1989, and an English translation.
Fields Carolyn E.
Kabushiki Kaisha Toshiba
Porta David P.
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