Smk Corporation

Sony Corporation

Kohei Homma

Mitsuhiro Yoshida

Tadahito Sasaki

Masayoshi Suzuki

Haruhiko Terada

Makoto Goto

Toyokazu Yoshino

Provided is an optical-electrical composite cable in which, even if the entire optical-electrical composite cable having an optical fiber routed along flexible flat wiring boards is made thin, the optical fiber is not deformed or damaged by a large bending stress. A pair of the flexible flat wiring boards are disposed on a front surface side and a rear surface side of the optical fiber, and a covering member integrates the entirety thereof. Thus, even if the optical-electrical composite cable is made thin, the cable is not bent with a large curvature without deformation of the optical fiber.

Optical-electrical composite cable

A composite cable is provided which can connect a power line for feeding drive power to flat panel-shaped electric equipment and a signal line for outputting an electric signal to the electrical equipment at the narrow side surface of the electrical equipment. A flexible printed circuit board constitutes an end connection unit of the flexible composite cable to be connected to the electrical equipment, so that the composite cable can be connected to a side surface of the electrical equipment. Since the lateral width of the flexible printed circuit board is sufficiently long, a power trace is made thin and wide, so that the resistance value per unit length can be reduced and a current carrying capacity that allows the use of high power current can be adopted.

Composite cable to be connected to flat panel-shaped electrical equipment

Disclosed herein is an oscillation circuit including: a control transistor changing an electric potential at an output terminal thereof by proceeding to one of a conduction state and a non-conduction state in accordance with an electric potential at an input terminal thereof; a transistor as an object of a measurement having a polarity of a channel identical to that of the control transistor, and connected in series with the control transistor between a power source and a ground; a capacitor delaying the change in the electric potential at the output terminal in accordance with a value of a leakage current leaked from the transistor as an object of a measurement when the control transistor proceeds from the conduction state to the non-conduction state; and an inversion circuit inverting the electric potential at the output terminal, thereby feeding the inverted electric potential back to the input terminal.

Oscillation circuit and test circuit

Growing community of inventors

Kanagawa, Japan

Kohei Homma