Ezaki Glico Co., Ltd.

Fujitsu Denso Ltd.

Nanoegg Research Laboratories, Inc.

Yoshiki Kubota

Kazuo Kobayashi

Yoko Yamaguchi

Kazuhisa Sugimoto

Hiromi Nishiura

Keiichi Hirata

Katsuhiko Nishimura

Provision of a stable &#x3b1;-lipoic acid. A method for producing &#x3b1;-lipoic acid nanoparticles, the method comprising the steps of: preparing an aqueous dispersion liquid containing &#x3b1;-lipoic acid and a nonionic surfactant; adding a divalent metal salt into the aqueous dispersion liquid, wherein the divalent metal salt is a divalent metal halide, a divalent metal acetate or a divalent metal gluconate; and adding an alkali metal carbonate or an alkali metal phosphate into the aqueous dispersion liquid which has been added with the divalent metal salt, thereby forming &#x3b1;-lipoic acid nanoparticles.

&#x3b1;-Lipoic acid nanoparticles and methods for preparing thereof

A primary side of a transformer has a switching transistor to on-off control the current flowing in a primary winding on a primary side. A secondary side of the transformer has a commutating side FET to be turned on by applying the induced voltage of a tertiary winding on a secondary side of a current transformer, and a flywheel side FET with the primary winding on the primary side of the current transformer connected thereto in series. The current transformation ratio of the current transformer is small in the initial period when the flywheel side FET is turned on, and then, the current transformation ratio is increased by current controlling means comprising a saturable reactor, a diode or the like.

Control switch for synchronous rectification circuit of DC-DC converter

Growing community of inventors

Kawasaki, Japan

Yoshiki Kubota