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:
Feb. 03, 1998
Filed:
Nov. 14, 1995
Sumitaka Arikawa, Nara, JP;
Masahiko Aiba, Nara, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A high-voltage power pack includes: a switching circuit for effecting switching control of a low-voltage d.c. signal to generate a low-voltage a.c. signal; a high-voltage transformer for increasing the voltage of the low-voltage a.c. signal outputted from the switching circuit to generate a high-voltage a.c. signal; a combination of a rectifying circuit and a low-pass filter for rectifying and smoothing the high-voltage a.c. signal to generate a high-voltage d.c. signal; resistors dividing the high-voltage d.c. signal obtained from and smoothed through the rectifying circuit and low-pass filter; a feedback circuit for controlling the switching circuit so that the potential at a divided point between the resistors may be kept constant; and an a.c. power source for applying an alternating current to the divided point, the alternating current having a frequency component transmissible through the low-pass filter, whereby an a.c. superimposed voltage made of the high-voltage d.c. signal with an a.c. voltage superimposed is obtained from the output side of the low-pass filter.