Tdk Corporation

Masaru Kumagai

Masaaki Iwakura

Katsumi Kobayashi

Nobuo Kitajima

Satoshi Shinbo

Hiroshi Suzuki

Hideki Sasaki

Kazunori Arimitsu

Yutaka Hatakeyama

Shoichi Sasaki

A coil device includes a bobbin, a terminal, and a terminal block. The bobbin includes a winding portion for winding a wire around an outer circumference of the winding portion. The terminal is connectable with an end of the wire. The terminal block holds the terminal. The terminal is movable both in a first axis and a second axis of the bobbin.

Coil device

A transformercomprises a bobbin. A cylinder portionof the bobbinis provided with a first winding partwhere a first wireis wound and a second winding partwhere a second wireis wound at a position different from the first winding partin an axial direction. At an outer circumference of the cylinder portionlocated between the first winding partand the second winding part, an insulating partition collaris formed. On the first winding part, a winding partition collar, separating in respective sections S, S, is formed. On the winding partition collar, at least one communication groovea, communicating the sections S, Sadjacent to each other is formed. The first wireis &#x3b1;-wound around the first winding part

Transformer and leakage transformer

A transformercomprises a bobbin. A cylinder portionof the bobbinis provided with a first winding partwhere a first wireis wound and a second winding partwhere a second wireis wound at a position different from the first winding partin an axial direction. At an outer circumference of the cylinder portionlocated between the first winding partand the second winding part, an insulating partition collaris formed. On the first winding part, a winding partition collar, separating in respective sections S, S, is formed. On the winding partition collar, at least one communication groove, communicating the sections S, Sadjacent to each other is formed. The first wireis &#x3b1;-wound around the first winding part

Transformer

A coil unit including an annular toroidal core, two coils wound over the toroidal core providing a bifilar winding, a winding-start positioning part, and a winding-end positioning part. The winding-start positioning part is adapted for making contact with a winding-start portion of the coils. The winding-end positioning part is adapted for making contact with a winding-end portion of the coils for regulating the positions of the winding-start portion and the winding-end portion relative to the toroidal core.

Growing community of inventors

Tokyo, Japan

Masaru Kumagai