Tdk Corporation

Tdk Electronics Company, Limited

Hisashi Osada

Kazuo Sato

Toshio Izu

Shigeyuki Doi

Yoshio Goshima

Yoshinari Yamashita

Hideaki Fujioka

Ikuo Kato

Composite device having inductor and coupling member

A case has parts storage openings through a top plane. Terminals protrude above the plane and extend downward through the case to a bottom plane, where they are bent to conform to the bottom plane. Interconnections of the terminals in the bottom plane provide the wiring pattern necessary for the creation of an LC filter. LC combination parts are made using a coil wound on a coil support with a capacitor secured to the top surface of the coil support. The coil part of the LC combination parts are inserted into the parts storage openings of the case, to secure the coils rigidly in place. The coils and capacitors are affixed to the terminals above the top plane. The resulting rigid support of the LC combination units provides stable and accurate filter characteristic in a compact package. The interconnections of the terminals in the bottom plane permits observation of the connections to permit manual inspection or the use of pattern recognition hardware and software for robotic sorting and assembly.

Integrated LC filter

A complex circuit component for a video signal circuit in a television receiver set has a single substrate, on which a first ceramic trap for removing speech carrier wave together with an inductor for that trap, a second trap for removing color subcarrier wave, and a delay circuit coupled with output of said second trap are mounted. The capacitors for those circuits are implemented by a pair of conductive patterns deposited on front surface and rear surface of the substrate. The capacitor for said first ceramic trap is subject to trimming so that the characteristics of the trap is adjustable.

Complex circuit component for a video signal circuit in a television

A concentrated constant type delay device can be assembled in simple steps and has simple and stable structure. The delay device comprises a composite capacitor which comprises a common electrode placed on one surface of a dielectric and a plurality of separated electrodes placed on the other surface of the dielectric and the separated electrodes being respectively connected to each joint of coils connected between an input terminal and an output terminal.

Concentrated constant type delay device

An electronic part comprises a plastic core holder having a sectional ] shape which has an opening part and a stopper in one side and a bottom; and a plurality of drum cores having windings which are arranged in the core holder to contact the flanges of the adjacent drum cores.

Growing community of inventors

Tokyo, Japan

Hisashi Osada