X-ray or gamma ray systems or devices – Electronic circuit – X-ray source power supply
Patent
1986-05-15
1988-08-30
Church, Craig E.
X-ray or gamma ray systems or devices
Electronic circuit
X-ray source power supply
174 85, 324117R, 324127, 378 98, 378110, H05G 110
Patent
active
047682159
ABSTRACT:
An X-ray generator with current measuring device has an X-ray tube, a power supply unit for feeding high voltage to the X-ray tube, a high voltage cable for connecting the X-ray tube and power supply unit. The high voltage cable is comprised of a core conductor, an insulating layer surrounding the core conductor and a covered shield surrounding the insulating layer and the covered shield is disconnected near one end of the cable connected to the X-ray tube so as to be divided into a major shield portion adjacent to the power supply unit and a minor shield portion adjacent to the X-ray tube. An insulating member is provided for electrically insulating the major and minor shield portions, and a magnetic sensor sensitive to a magnetic field generated by a current flowing through the high voltage cable is positioned around the minor shield portion. The X-ray generator can measure the X-ray tube current accurately and readily under electrical insulation.
REFERENCES:
patent: 3061665 (1962-10-01), Russ et al.
patent: 3323056 (1967-05-01), Huley
patent: 4104525 (1978-08-01), Franke
patent: 4424410 (1984-01-01), Edgerton
patent: 4573184 (1986-02-01), Tanaka et al.
patent: 4586970 (1986-05-01), Ishise et al.
"General View of Medical Radiation Appliances Technology in 1984", by Institute of Radiation Appliances Industry.
Hatakeyama Takanobu
Kaneko Kazuo
Kiwaki Hisakatsu
Okubo Hiroshi
Shimada Kayo
Church Craig E.
Freeman John C.
Hitachi , Ltd.
Hitachi Medical Corporation
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