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:
Oct. 19, 1993
Filed:
Jun. 24, 1992
Juntaro Oku, Numazu, JP;
Tokyo Electric Co., Ltd., Tokyo, JP;
Abstract
A high-voltage power source control device comprises a pulse generating section for holding duration data and periodically generating a switching pulse of a duration corresponding to the duration data, a monitor circuit for generating a monitor voltage corresponding to an output voltage of a high voltage power source, an A/D converter for outputting monitor voltage data based on a monitor voltage from the monitor circuit, and a processing section for deriving as adjustment data a difference between the monitor voltage data from the A/D converter and the reference voltage data, adding the adjustment data to the duration data, and setting the result of addition into the pulse generating section as new duration data to change the duty ratio of the switching pulse, thereby maintaining the output voltage of the high voltage power source at or near the reference voltage. The processing section in the control device has a shift register for decreasing the adjustment data at a preset rate.