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. 05, 1996
Filed:
Feb. 27, 1995
Applicant:
Inventor:
Masuo Hanawaka, Tokyo, JP;
Assignee:
Yokogawa Electric Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02M / ;
U.S. Cl.
CPC ...
363 21 ; 363 97 ;
Abstract
A switching power source of a voltage resonant type having a circuit for detecting the lowest point of voltage applied to both ends of a switching element, a time signal generating circuit which is activated concurrently with the turning ON of the switching element to output a predetermined time signal, and a circuit for inhibiting the turning ON of the switching element based on the lowest point detection signal, while a time signal is outputted from the time signal generating circuit.