Abstract:
A differential circuit with a function of a variable gain without shifting the output cross point is disclosed. The differential circuit includes an amplifying stage and a control stage. The amplifying stage includes three units each having a pair of transistors, a pair of load resistors, and a pair of current sources. The second and third units each put between the first unit and the load resistor to bypass the current. The control stage includes two units and two current sources to compensate the current bypassed by the second or third unit to keep the DC output level substantially in constant.
Abstract:
A completely-enclosed cell wherein if the internal pressure in the cell rises because of short circuit or overcharging, temperature rise and explosion of the cell is effectively prevented, the current is cut off, and the internal pressure is simultaneously and quickly released. The cell includes a sealer comprising a valve body composed of a metal substrate perforated at narrowly spaced intervals in the endless periphery and a metal foil 72 substrate to cover the perforations. The cell a structure in which a narrow gap portion of a 98 metal plate deformable even by a weak force of when the internal pressure increases elongates and the portion surrounded by the through holes projects 122.
Abstract:
A differential amplifier capable of canceling an input offset current and expanding a linearly operating range is disclosed. The differential amplifier, which is preferably applicable to an optical receiver to convert a photocurrent into a voltage signal, includes a trans-impedance amplifier and an offset canceller that detects output offset and extracts input current to cancel the output offset. Moreover, the extracted input current traces the average level of the input voltage to widen the linearly operating range of the trans-impedance amplifier.
Abstract:
A trans-impedance amplifier (TIA) with an adjustable bandwidth is disclosed. The TIA of the present invention includes the amplifying stage and the emitter follower stage arranged in the downstream of the amplifying stage. The transistor in the amplifying stage includes a diode in the emitter thereof to provide a substantial emitter level to the transistor. This diode is biased by another current source with a variable function. The operating point of the diode, in particular, the differential resistance thereof, is variable by the current source, which adjusts the bandwidth of the TIA without affecting the phase characteristic of the TIA.
Abstract:
An amplifier for an optical receiver is disclosed. The amplifier includes a common base buffer, a differential amplifier, and some buffer amplifiers, where circuit block from the common base buffer to the buffer amplifiers have the differential arrangement and are connected in series in this order. The amplifier further includes an offset compensator that receives the outputs of the buffer amplifier put in the rear end of the amplifier and outputs control signals, which are complementary to each other and filtered by a low-pass-filter, to the base of the transistors in the common base buffer to compensate the offset appeared in the output of the buffer amplifier.
Abstract:
A shading decorative sheet which is excellent in a design and used for plate glasses of buildings, partitions for dividing a room and the like is provided by the present invention, and it comprises a base layer comprising a thermoplastic resin film having a haze value of 20% or more measured through a transmitted light according to JIS K7105 and formed on one surface of the base layer, a design layer comprising a decorative part having a similar color to that of the base layer and a non-decorative part.
Abstract:
A differential amplifier capable of canceling an input offset current and expanding a linearly operating range is disclosed. The differential amplifier, which is preferably applicable to an optical receiver to convert a photocurrent into a voltage signal, includes a trans-impedance amplifier and an offset canceller that detects output offset and extracts input current to cancel the output offset. Moreover, the extracted input current traces the average level of the input voltage to widen the linearly operating range of the trans-impedance amplifier.
Abstract:
A resin film for use in laminating for producing decorative laminates which is equal or superior to conventional polyvinyl chloride resins in suitability for embossing, processability, and long-term water resistance and can be significantly well-designed; and a decorative laminate in which the resin film has been laminated. The resin film is obtained by compounding a polyester resin with 0.5 to 60 wt. % crystallization accelerator having a particle diameter of 0.01 to 5 &mgr;m, forming the mixture into an unstretched film, and embossing at least one side of the film. The resin film is laminated to a metallic or wooden plate, a board, etc. to produce a decorative laminate.
Abstract:
A resin-coated metal sheet in which at least one surface is overlaid by a paint layer E, a modified olefin resin layer D of 5 to 100 microns thickness, a pattern or/and solid decorative layer C, an adhesive layer B, and a transparent polyester resin film A of 5 to 10 microns thickness. The modified polyolefin resin layer provided between the transparent polyester resin film and the metal sheet has excellent adhesiveness against the decorative layer, the paint layer and the polyesters resin film so that delamination of the resin-coated metal sheet does not occur even in the case in which the resin-coated metal sheet is formed under severe conditions such as deep drawing. The modified polyolefin layer absorbs any unevenness of the component layers so that the resin-coated metal sheet exhibits excellent reflectivity.
Abstract:
An anti-lock control method for a vehicle includes the steps of: calculating an operation control quantity on the basis of a braking pressure at the start of an anti-lock control when a wheel is about to be locked during braking, and controlling the operation of an actuator, capable of adjusting the braking force of a wheel brake by the operation control quantity in order to reduce the braking force. In this process, the braking pressure at the start of anti-lock control is corrected with the locking tendency of the wheel to set an adjusted reference braking pressure, and the operation control quantity is calculated on the basis of the adjusted reference braking pressure. Thus, it is possible to determine the reference braking pressure with good accuracy, leading to an enhanced accuracy of the anti-lock control.