Inverter type X-ray apparatus

Details Inverter type X-ray apparatus Inverter type X-ray apparatus

1988-01-15

1989-06-13

Church, Craig E.

X-ray or gamma ray systems or devices

Electronic circuit

X-ray source power supply

363 17, 363 26, 378110, 378112, H05G 120

Patent

active

048399159

ABSTRACT:
In an inverter type X-ray apparatus comprising an inverter including a plurality of switching elements operated alternately to generate an AC voltage having a rectangular waveform, a high voltage transformer transforming the AC voltage of rectangular waveform into a high AC voltage, a high voltage rectifier circuit rectifying the high AC voltage into a DC voltage, and an X-ray tube to which the DC voltage is applied as a tube voltage, the switching elements are driven to make chopping operation at a frequency high than the inverter drive frequency, and a pattern signal is generated for gradually increasing the duty cycle of the chopping operation in synchronism with the timing of switching over the switching elements.

REFERENCES:
patent: 4158138 (1979-06-01), Hellstrom
patent: 4449175 (1984-05-01), Ishii et al.
patent: 4449227 (1984-05-01), Osako
patent: 4601051 (1986-07-01), Santurtun

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