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. 26, 1988
Filed:
Jul. 24, 1986
Hirofumi Hino, Noda, JP;
Masaji Ootakeguchi, Toyonaka, JP;
Hitachi Medical Corporation, Tokyo, JP;
Abstract
A high voltage generating apparatus for an X-ray tube comprises an inverter for converting a DC voltage into an AC voltage, a high voltage transformer for boosting an output voltage of the inverter, a rectifier for converting an output voltage of the transformer into a DC voltage, and a detector for detecting an X-ray tube voltage to produce an output signal corresponding to the X-ray tube voltage. The output signal of the detector is sampled and held by a sample/hold circuit in synchronism with an operating period of the inverter so that the X-ray tube voltage is controlled in accordance with an error between an output signal of the sample/hold circuit and an X-ray tube voltage set level.