X-ray generator using tetrode tubes as switching elements

Details X-ray generator using tetrode tubes as switching elements X-ray generator using tetrode tubes as switching elements

1986-10-08

1988-03-29

Church, Craig E.

X-ray or gamma ray systems or devices

Electronic circuit

With switching means

315107, 361 87, 378114, H05G 0126, H05G 0154

Patent

active

047349247

ABSTRACT:
The anode and cathode of an X-ray tube are connected to a high-voltage power source respectively, through corresponding tetrode tubes, and the center metal electrode of the X-ray tube is grounded. The tetrode tubes are simultaneously turned on and off upon receipt of a control signal. An abnormal current, which flows through the center metal electrode due to a short-circuiting fault of the tetrode tube connected to the cathode of the X-ray tube, is detected during an OFF period of the tetrode tubes. Upon detection of the abnormal current, the tetrode tube connected to the anode of the X-ray tube is forcedly turned on, thus preventing the fusion of the center metal electrode in the X-ray tube.

REFERENCES:
patent: 2173315 (1939-09-01), Schuttig
patent: 4402086 (1983-08-01), Setbon
patent: 4520495 (1985-05-01), Tanaka

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