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. 17, 1992
Filed:
Mar. 16, 1990
Applicant:
Inventors:
Shigeyuki Kawahata, Hitachi, JP;
Susumu Murakami, Katsuta, JP;
Eisuke Sato, Yokohama, JP;
Tadaaki Kariya, Ibaraki, JP;
Kazunori Morozumi, Katsuta, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K / ;
U.S. Cl.
CPC ...
307630 ; 307305 ; 307639 ; 307643 ; 357 38 ; 357 39 ;
Abstract
A method of transmitting a pulse signal composed of a combination of a positive pulse and a negative pulse through a semiconductor switch providing a conduction modulation in the on-state, the positive pulse and negative pulse flowing through the semiconductor switch in the forward and reverse directions, respectively, relative to the semiconductor switch. An offset current is superposed upon the pulse signal so as to make the absolute value of the positive pulse larger than that of the negative pulse.