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:
Mar. 16, 1999
Filed:
Dec. 22, 1997
Haruo Takahashi, Moriyama, JP;
Nobuaki Imamura, Omihachiman, JP;
Yasuhiko Toda, Omihachiman, JP;
Yasunobu Saida, Omihachiman, JP;
Hisashi Takiguchi, Omihachiman, JP;
Masaru Omura, Moriyama, JP;
Abstract
A high-voltage generating circuit includes a high-voltage production circuit, a high-voltage detecting circuit and a control circuit. The high-voltage production circuit includes clamping diodes to provide a good response for stabilizing a high voltage. The control circuit applies pulse-width control to a power source voltage. The high-voltage detecting circuit has a high-voltage circuit section to which a voltage of 1 kV to several tens of kilovolts is applied and a low-voltage circuit section to which a voltage of several tens of volts is applied. The high-voltage circuit section comprises a parallel circuit including voltage-dividing resistors and a speed-up capacitor. The speed-up capacitor is set to 1000 pF or less.