Mitsubishi Denki Kabushiki Kaisha

Elpida Memory, Inc.

Yasuhiro Namba

Shigeki Yamakawa

Peter M Lee

Tatsushi Takahashi

Takehiko Kubota

A simulation method includes determining a relationship between stress time and a degradation rate of drain current on a basis of a table in which data of a lifetime of a transistor, or the degradation rate of the transistor, is written, and calculating an amount of change in drain current accordance with the degradation rate, using a table in which information indicating a change in the drain current, being dependent on voltage, is written, based on actually measured data of drain current of the transistor after degradation, drain current in an initial state of a particular transistor model, and the relationship between stress time and the degradation rate of drain current.

Simulation method for transistor unsuitable for existing model

In an elevator apparatus, a control panel is disposed below a lowermost movement position of a proximity switch projecting from a car. The control panel is mounted on a hoistway wall through a mounting bracket at a position which is overlapped by a cross-section of the proximity switch projected in the ascending and descending directions of the car. Namely, the control panel is mounted by utilizing the space below the movement range of the proximity switch. Also, a gap is present between the surface of the hoistway wall and the control panel by the mounting bracket.

Elevator apparatus with control panel located within elevator hoistway

In an elevator controlling apparatus, a first suspension member and a second suspension member are fixed to a guide rail at a vertical interval. A control panel can be suspended from either a first or second suspension member. Thus, the control panel can be moved between a operation position at a first height from a bottom portion of a hoistway and a maintenance position lower than a operation position. A junction box is fixed on a hoistway wall. The junction box and the control panel are connected to each other through flexible cables.

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Tokyo, Japan

Yasuhiro Namba