Line (electrical engineering)

Abstract: There is provided a light emitting device in which low power consumption can be realized even in the case of a large screen. The surface of a source signal line or a power supply line in a pixel portion is plated to reduce a resistance of a wiring. The source signal line in the pixel portion is manufactured by a step different from a source signal line in a driver circuit portion. The power supply line in the pixel portion is manufactured by a step different from a power supply line led on a substrate. A terminal is similarly plated to made the resistance reduction. It is desirable that a wiring before plating is made of the same material as a gate electrode and the surface of the wiring is plated to form the source signal line or the power supply line.

Abstract: PURPOSE: A nonvolatile semiconductor memory device is provided to reduce current consumed at a sense amplifier when amplifying a small signal induced to a bit line by that a cell capacitor and a bit line capacitor hold an electric charge in common by precharging a bit line in a semiconductor device using a ferroelectric capacitor to a half of the level of a power voltage and increase amplifying function by decreasing the coupling effect by a gate capacitance of a sense amplifier CONSTITUTION: The memory device includes a sense amplifier(S1), a memory cell(M1), a plate driver(F1), a reference voltage generating portion(R1), a half power voltage generating device and a precharging circuit(P1) The sense amplifier senses a difference of a voltage between a bit line(BL) and a bit line bar(BLB) and amplifies the difference The memory cell, in which a switching transistor and a ferroelectric capacitor are in series connected, stores a data The plate driver is connected to the ferroelectric capacitor and drives a plate line applying a voltage to the ferroelectric capacitor The reference voltage generating portion generates a reference voltage necessary for sensing and amplifying The half power voltage generating device, to which a level of a power voltage is inputted, outputs a level of a half power voltage The precharging circuit supplies the half power voltage inputted from the half power voltage generating device to the bit line and bit line bar in response to a signal for controlling a bit line

Abstract: Electric power line phase conductor (line) monitoring system in which a single measuring station can measure all the power parameters of voltage and current and phase angle plus ambient and line temperatures. The measuring station fastens to the line, typically draws power from the line, is small, light, and manually installed without the need for a line power outage. The measured data is transmitted from the measuring station up on the power line phase conductor to a ground receiving and data processing station by either radio or a fiber optic cable or an optical-through-air data link. Each type of data link, fiber optic, radio or optical-through-air, can be built to carry either analog (linear) or digital data. Line true RMS voltage and true RMS current values, line phase angle, along with ambient and line temperature values are digitized and transmitted in digital form through a digital data link. Real time analog voltage and current sinusoidal waveforms are transmitted in analog form through a linear data link with only group delay which for a 50-foot long fiber optic cable would be roughly only 50 nanoseconds. Voltage data is obtained by an elegantly simple voltage divider technique which takes advantage of the highly dielectric character of plastic and glass materials in general and fiber optic cables in particular to form a dual purpose unibody cable assembly containing both the optical fibers of the data link and the large resistance resistive link of the voltage divider. Resistive link materials are described which have high precision resistance tolerance and low temperature coefficients of resistance, and thus improve the accuracy of the voltage sensor by establishing precisely the total resistance of the resistive link and by minimizing changes in the magnitude of that resistance due to changes in ambient temperature.