Tokyo Shibaura Denki Kabushiki Kaisha

Hideki Sato

Hiroshi Asahina

An X-ray radiation control apparatus comprises an X-ray tube, tetrodes each connected between the anode and the cathode of the X-ray tube, and tetrode controlling circuits connected thereto. Each of the tetrode controlling circuits controls the anode voltage drop of the respective tetrode for stabilizing a high-tension DC voltage to be applied to the X-ray tube as well as removing ripple components therefrom. Each tetrode controlling circuit is constituted by a first high-voltage transistor for producing a first grid bias controlling voltage for stabilizing the high-tension DC voltage and a second high frequency transistor for producing a second grid bias controlling voltage for absorbing the ripple components contained in the high-tension DC voltage.

X-Ray radiation control method and apparatus

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.

Growing community of inventors

Ootawara, Japan

Hideki Sato