X-ray tube protection circuit

Details X-ray tube protection circuit X-ray tube protection circuit

1976-09-02

1977-07-12

Smith, Alfred E.

Radiant energy

With charged particle beam deflection or focussing

With target means

250409, H05G 130

Patent

active

040356485

ABSTRACT:
An eight bit binary address signal is generated in response to a selected time station, X-ray tube, focal spot and anode rotation speed which is then used to address a read only memory (ROM) pre-programmed with specific binary representations of exact values on the manufacturer's high set rating chart curves which represents the maximum power allowed for each selected type of X-ray exposure desired. Once the exposure parameters are selected, the read only memory outputs a unique binary digital signal which is fed into a digital to analog converter which in turn generates an equivalent analog voltage. This analog voltage of maximum allowable power is then compared against the power (kV .times. mA) selected to inhibit further operation if an unsafe condition exists or thereafter cause a proper adjustment to occur while permitting an X-ray exposure for a safe condition, thus allowing the radiologist to utilize the X-ray tube to its fullest capability.

REFERENCES:
patent: 3746862 (1973-07-01), Lombardo et al.
patent: 3838285 (1974-09-01), Siedband et al.
patent: 3968372 (1976-07-01), Laughinghouse

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