Abstract:
The present invention provides a continuous-time delta-sigma modulator which is configured with an SC (SCR) feedback DA (103) for improving tolerance to jitter for a clock signal and operates stably by maintaining a certain feedback amount without being influenced by a change in a production process thereof or an operating temperature condition thereof. By adjusting a reference voltage Vref that determines an output voltage of the SC feedback DA (103), it is possible to feed back a certain amount of charge from the SC feedback DA (103) to a loop filter (101). Thereby, operation of the delta-sigma modulator is stabilized.
Abstract:
Output signal waveform having high input signal reproducibility is outputted from inductive load or the like. Output signals V1a and V1b obtained by feeding back an output signal Vp-n1 at output terminals (50 and 51) across load L1 to input terminals (9a and 9b) are compared with an input signal Vin to detect an error between signals; a first error suppression signal Vout1 is produced such that the detected error between the signals is suppressed; inclination of first error suppression signal Vout1 is detected, and a second error suppression signal Vout2 is produced such that inclination error to input signal Vin is suppressed based on the detected inclination signal; and the ratio between the period that electric power is supplied to the load L1 and the period that electric power is not supplied to the load L1 is modified according to the error of the error suppression signal.
Abstract:
A pointing device being improved in assembling performance, capable of being downsized, being long in product life. Magnetic sensors (21) are disposed on a mounting substrate (24), two each symmetrically along the X axis and Y axis. A switch (28) is disposed on the silicone resin (23) side of the mounting substrate (24) to provide a switching function so that the switching function is satisfied when a magnet cover (25) is pushed in a magnet (22) direction. Although originally designed to output coordinates values of an input point, the pointing device can be provided with a determining function in addition to coordinates values by being given a switching function. Silicone resin (23), when under an external force, easily deforms, and, when the external force is removed, immediately restores to an initial condition not under the external force.
Abstract:
A sensor (1) produces the output that changes linearly with absolute temperature. In response to the output, a reference voltage generator (13) produces reference voltages (Vhigh, Vlow) that change linearly with absolute temperature. A Schmidt trigger (14) compares the output signal from a sensor signal amplifier (12) with the reference voltages and produces output. The sensor signal amplifier (12) with a temperature-independent amplification factor amplifies the output signal from the sensor (1) while performing offset compensation. The sensor signal processing circuit (2) is formed of thin-film silicon deposited on an insulating substrate. The output from the sensor (1) undergoes accurate temperature compensation over a wide temperature range, resulting in reliable operation at high temperature.
Abstract:
A non-aqueous cell comprising a rolled electrode assembly including a positive plate with an active layer, a negative plate with an active layer, and a separator between the active layers of the positive and the negative plates; and a case that contains the electrode assembly and a non-aqueous electrolyte. In this cell, a metallic portion disposed in association with the positive plate and having an equipotential to the positive plate is equipped on at least one of the sides thereof with a portion having no active layer, and thus forms a positive plate equipotential exposed metallic portion (α) extending in a lontitudinal direction for a length at least one turn, and this positive plate equipotential exposed metallic portion (α) is so arranged as to oppose a negative plate equipotential exposed metallic portion (β) disposed in association with the negative plate, for a length at least one turn. The invention discloses also a non-aqueous cell produced by employing a simple laminate electrode assembly or a zigzag-woven laminate electrode assembly, which has substantially the same structure as the rolled electrode assembly. Due to the unique construction described above, even when the case is crushed by an external pressure or when overcharge is generated due to abnormality in a charger circuit, etc, or when a nail, etc, pierces the cell or when the cell is abnormally heated from outside, an abnormal rise of the cell temperature is limited due to internal short-circuit of the metals having sufficiently low resistance, and the safety of the cell is therefore ensured.
Abstract:
Disclosed is a negative type photosensitive resin composition comprising (A) a polyamide having a photopolymerizable unsaturated double bond, (B) a monomer having a photopolymerizable unsaturated double bond, (C) a photopolymerization initiator and (D) a melamine resin.
Abstract:
A tilt sensor capable of measuring a tilt angle by utilizing piezoresistive effect without selectively etching a substrate having piezoresistors formed therein, wherein the backside of the silicon substrate 1 having piezoresistors R1 to R4 formed therein is uniformly ground to a deflectable thickness, both ends of the silicon substrate 1 are supported by a support member 2, and a weight member 3 is provided at the center of the silicon substrate 1 through a convex portion 3a.
Abstract:
[OBJECT] To provide a radio-frequency antenna through which a high amount of current can be efficiently passed even at a radio-frequency level for plasma generation, as well as a plasma processing device utilizing the radio-frequency antenna. [MEANS FOR SOLVING PROBLEM] A radio-frequency antenna (10) according to the present invention includes a metal fiber sheet. A plasma processing device according to the present invention includes: a vacuum container (21) including a wall (211) having an opening (213); a radio-frequency antenna (10) including a metal fiber sheet and located at the opening (213); and a dielectric protection plate (12) located closer to the interior of the vacuum container (21) than the radio-frequency antenna (10) and configured to close the opening (213) in a gas-tight manner. The radio-frequency antenna (10) including a metal fiber sheet has a larger surface area and an accordingly lower impedance to a radio-frequency current than a radio-frequency antenna including a metal plate having the same outer shape. Therefore, it allows a radio-frequency current commonly used for plasma generation (e.g., at a frequency of 13.56 MHz) to be more efficiently passed through in large amounts.
Abstract:
A configuration of a lateral transistor suited for the hybrid-integration (BiCMOS) of a high-performance lateral transistor (HCBT) and a CMOS transistor, and a method for manufacturing the lateral transistor are provided. A semiconductor device includes a HCBT 100 and a CMOS transistor 200 hybrid-integrated therein. The HCBT 100 has an open region 21 opened by etching a device isolating oxide film 6 surrounding an n-hill layer 11, an emitter electrode 31A and a collector electrode 31B each of which is formed in the open region 21 and is composed of a polysilicon film having such a thickness as to expose the n-hill layer 11 exposed by etching the device isolating oxide film, and an ultrathin oxide film 24 covering at least a part of the n-hill layer 11. The ultrathin oxide film 24 functions as a protective film for protecting the n-hill layer 11 from being etched when the polysilicon film is etched to form the emitter 20 electrode 31A and the collector electrode 31B.
Abstract:
The present invention relates to a compound semiconductor substrate having a reduced dislocation (defect) density at an interface between a Si substrate and a compound semiconductor layer, and a method for producing the compound semiconductor substrate. Contaminants, such as organic matter and metal, on a surface of a Si substrate were removed by subjecting the Si substrate sequentially to organic washing, acid washing and alkaline washing, whereby a flat oxide film (not shown) was formed (S31). The oxide film on the surface was removed by using an aqueous hydrogen fluoride solution having a concentration of 1.0% by weight, whereby hydrogen termination treatment was performed (S32). The Si substrate immediately after being subjected to the hydrogen termination treatment was placed in a vacuum apparatus, and then the temperature of the Si substrate was raised in a vacuum apparatus (S33). If the substrate temperature is raised without any operation, the termination hydrogen is released. Before the hydrogen was released, pre-irradiation with As was performed (S34). Thus, an interface between the Si substrate and the compound semiconductor layer was prepared. Several minutes later, irradiation with Ga and As was performed (S35). Thereby, the compound semiconductor was formed (S36).