With miniaturization and weight saving of portable information device, power supplies of such small information device is becoming necessary. For an example of such information device, we took up the digital tape measure which is used at home or shop floor. We manufactured the test model of digital tape measure equipped power generation capability, and evaluated performance of the test model for optimal design of the system at this research.

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An automatic power generator unit for a digital tape measure was developed as a part of development of a small-size, maintenance-free automatic power generating system with low environmental load. In the 1^<st> report, feasibility of the system was verified by making the macro-model. The objective of this report is; 1) the examination of the miniaturization of an automatic electrical generating system, 2) making the 2^<nd> trial unit based on the optimum design and 3) the evaluation of the performance of the 2^<nd> trial unit. As a result of the optimum design the 2^<nd> trial unit was improved to the twice of electric power efficiency, and 1.35% of size from the 1^<st> trial unit.

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Most of conventional micro manipulators do not have multi purpose functions, sophisticated motions and powers as human being's hands do, and can do only simple works; stabbing, injection and pipette insertion and translation. The purpose of this study is to develop and to assemble a chopstick-type micro hand with much higher workability and compatibility toa conventional manipulator system applying a commertial video game controller pad which has multi-input gate for the micro manipulators. Our chopstick-type micro manipulator is designed referring to the actions of chopstick. When we use the chopstick, a piece of the chopstick at the side of forefinger moves mainly to manipulate an object. But a piece of chopstick at the side of thumb hardly moves at all and only supports an object. Our new chopstick-type micro manipulator can catch a erlass dummy cell (φ50μm) by two glass needle and top of the single finger micro manipulator can reach exactly to the center of dummy cells.

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