Tohoku University

Alps Electric Co., Ltd.

Tsutomu Nakamura

Shinya Yoshida

Tadahiro Ohmi

Yasuhiko Kasama

Hirofumi Fukui

Hitoshi Seki

Akira Abe

Itaru Honma

Satoshi Miyazawa

Hiroshi Hyodo

Kazuko Ogino

To provide an individual boost circuit capable of boosting a minute power voltage to a target voltage more reliably. An individual boost circuit includes a first PMOS transistor that has a gate to which a first clock voltage is applied and performs on- and off-operations; a second PMOS transistor that has a gate to which a second clock voltage that has a reciprocal relation with the first clock voltage is applied and performs the on- and off-operations; an auxiliary capacitor; a boost capacitor; an auxiliary charging circuitthat charges an auxiliary capacitor via the second PMOS transistor with a power voltage from an external power when the first PMOS translator enters an off-state and the second PMOS transistor enters an on-state; and a boost charging circuitthat charges the boost capacitor via the first PMOS transistor with the second clock voltage through the auxiliary capacitor when the first PMOS transistor enters the on-state and the second switching transistor enters the off-state.

Individual step-up circuit, step-up circuit, and electronic apparatus

A battery includes a main body having a space therein, and including a channel communicating between an outside and the space; a pair of electrodes adjoining the space; and a valve that closes the channel responsive to pH.

Battery and electronic device

An etchant which generates neither heat nor gas during the process, does not sublimate, is stable for a long period of time, requires no special pipings, and further requires no special treatment of waste water because of containing no organic solvents. The etchant is a solution containing hydrofluoric acid and an-oxoacid or oxoacid salt compound expressed by Mm(XOn)p (where M is hydrogen, one-to three-valence metal or NH.sub.4, m is 1 or 5, X is a halogen element, n is 3, 4 or 6, and p is 1, 2 or 3).

Etchant, detergent and device/apparatus manufacturing method

Growing community of inventors

Sendai, Japan

Tsutomu Nakamura