X-Ray diagnostic system comprising means for the fixed specifica

Details X-Ray diagnostic system comprising means for the fixed specifica X-Ray diagnostic system comprising means for the fixed specifica

1980-04-22

1983-03-22

Smith, Alfred E.

X-ray or gamma ray systems or devices

Electronic circuit

X-ray source power supply

H05G 134

Patent

active

043777481

ABSTRACT:
In an exemplary embodiment, a control loop for the x-ray tube current is present which adjusts the x-ray tube current to a value which is a function of the exposure time and the selected mAs-product. In order that deviations of the x-ray tube voltage from a desired value can be controlled via the x-ray tube current, but that the mean value of the x-ray tube current can nevertheless be kept constant, a phase angle control device, arranged in the primary circuit of the high voltage transformer, can be present as the regulating unit for the mean value of the x-ray tube current. As controller for the x-ray tube voltage, a circuit for the adjustment of the filament current of the x-ray tube can be provided.

REFERENCES:
patent: 2512193 (1950-06-01), Zavales
patent: 3846633 (1974-11-01), Romandi
patent: 3978339 (1976-08-01), Aichinger
patent: 4160906 (1979-07-01), Daniels et al.

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