Murata Manufacturing Co., Ltd.

Tsutomu Ishige

Keiji Inoue

Yasutaka Fujii

Katsuhiko Tanaka

Yasuhiro Negoro

Keisuke Teranishi

Yoshiteru Ohta

Yuji Iyoda

Tomoki Okano

An inductor element includes a magnetic body core provided with a through-hole, and a coil inserted through the through-hole and wound around the magnetic body core a plurality of times. The coil includes three bonding portions located on one side in a thickness direction of the magnetic body core. The three bonding portions are located on a first virtual plane that partially intersects with the coil.

Inductor element and manufacturing method for inductor element

A circuit module has a circuit board on which electronic components are mounted and a covering member which has a plate portion and one or more supporting portions. The supporting portions fix the plate portion parallel to the surface of the circuit board. The covering member can be chucked by a chucking device to mount the circuit module to a mother circuit board.

Circuit module and method for mounting the same

To prevent a substrate for mounting electronic components from being damaged when cores are rubbed together during assembly, a pair of core members sandwich a part of a coil pattern formed on the substrate from the top and bottom sides of the substrate, and the core members are held together by a core-combining member. A cover member is fixed to the substrate to cover the upper side of the core-combining member. Inclined ribs on the cover member raise the core-combining member by abutting against external inclined fates of leg portions of the core-combining member. A clearance thereby is formed between internal faces of a top bar portion of each core member and a surface of the substrate.

Coil apparatus and manufacturing method for the same

A reference electrode is fixed on the bottom of a concave portion of a substrate. A movable electrode is provided so that its electrode face faces that of the reference electrode at an interval to form a capacitor by the movable and reference electrodes. A driving electrode for driving the movable electrode is fixed on the substrate at an interval from the movable electrode. The distance 2L between the driving and movable electrodes is twice the distance L between the movable and reference electrodes. An external bias voltage is applied between the driving and movable electrodes to deflect the movable electrode. This doubles the range of the displacement of the movable electrode, thereby increasing the capacity change rate of the variable capacitor.

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Kyoto-fu, Japan

Tsutomu Ishige