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:
Aug. 31, 1993
Filed:
Jan. 28, 1992
Toshio Naoi, Machida, JP;
Katsuhiko Tajika, Nobeoka, JP;
Asahi Kasei Electronics Co. Ltd., Tokyo, JP;
Abstract
An electric current detecting apparatus having gaps in a looped core and a primary winding and a secondary winding around the looped core. The gaps have continuous portions in the looped core. A magnetoelectric transducer such as a Hall effect element is inserted into at least one of the gaps. The gaps and the secondary windings have the same dimension as well as the same shape and are symmetrically arranged to reduce damping oscillation and transient spike noise of the secondary current I2. The continuous portion prevents increase of magnetic reluctance of the core. The electric current detecting apparatus has good high frequency response characteristics and detects a large current of a square wave pulse at a high speed and with high fidelity.