X-Ray apparatus

Details X-Ray apparatus X-Ray apparatus

1982-09-14

1984-05-22

Smith, Alfred E.

X-ray or gamma ray systems or devices

Electronic circuit

X-ray source power supply

378110, H05G 130, H05G 134

Patent

active

044505779

ABSTRACT:
An X-ray apparatus is disclosed which comprises an X-ray tube, a high voltage generating circuit for applying a high voltage between the anode and the cathode of the X-ray tube, a filament heating circuit for heating a filament of the X-ray tube, first switching element connected between one terminal of said filament and the negative bus of said high voltage generating circuit, second switching element connected between the other terminal of said filament and the negative bus of said high voltage generating circuit and an inverter circuit for alternately switching said first and second switching elements at a given period to switch the tube current paths.

REFERENCES:
patent: 1912755 (1933-06-01), Braden
patent: 4253048 (1981-02-01), Osako
Miyazaki et al., "D-C Filament Heating Method in X-Ray 12-Pulse Generator and Problems of it's Method," Jap. Soc. Rad. Tech., May 1982, pp. 300-301.
Brezovitch et al., "An Investigation and Explanation of the Fall-Off of X-Ray Tube Current During an Exposure," Phys. Med. Biol., 1980, vol. 25, No. 2, pp. 241-249.

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