The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 29, 1980
Filed:
May. 16, 1978
Kazumitu Kawamura, Yokohama, JP;
Mitsuru Yahata, Tokyo, JP;
Tokyo Shibaura Electric Co., Ltd., Kawasaki, JP;
Abstract
A capacitor connected between the anode and cathode of an X-ray tube through an X-ray switch is charged by a DC output voltage including ripple component from a rectifier connected to the secondary of a high-tension transformer. The primary of the high-tension transformer is connected to a switching circuit. A switching control circuit produces a turn-on signal for the switching circuit when a pulse signal derived from a phase detector in synchronism with a given phase of the ripple component, an X-ray exposure instruction signal and a charge instruction signal formed in a comparator are logically processed, and a turn-off signal when the charge voltage of the capacitor reaches a given value. The switching circuit is ON-OFF controlled by the switching control circuit.