摘要:
A clock-controlled gate circuit employs field-effect transistors of both n- and p-type conductivities. The circuit includes a precharge circuit, a logic circuit, and a switching transistor serially connected in that order between a power source and ground and a capacitor is connected to the junction between the precharge circuit and the logic circuit.
摘要:
A gate circuit employing insulated gate field effect transistors of complementary types includes a logic circuit such as an inverter, a NAND or a NOR circuit which is connected to an inverter circuit. Bias means are connected to the logic circuit through a first switching means and to the inverter circuit through a second switching means. A common clock signal is used to switch both the first and second switching means.
摘要:
Provided are a semiconductor device which can shorten reverse recovery time without increasing leakage current between the drain and the source, and a fabrication method for such semiconductor device.The semiconductor device includes: a first base layer (12); a drain layer (10) disposed on the back side surface of the first base layer (12); a second base layer (16) formed on the surface of the first base layer (12); a source layer (18) formed on the surface of the second base layer (16); a gate insulating film (20) disposed on the surface of both the source layer (18) and the second base layer (16); a gate electrode (22) disposed on the gate insulating film (20); a column layer (14) formed in the first base layer (12) of the lower part of both the second base layer (16) and the source layer (18) by opposing the drain layer (10); a drain electrode (28) disposed in the drain layer (10); and a source electrode (26) disposed on both the source layer and the second base layer, wherein heavy particle irradiation is performed to the column layer (14) to form a trap level locally.
摘要:
A magazine for spot welding electrodes that stores mini chips and can feed the mini chips one by one. A mini chip storage portion and a cap chip storage portion slidably aligning and storing a plurality of mini chips and a plurality of cap chips are formed such that the mini chip storage portion and cap chip storage portion communicate with each other at one of their ends, where they open to the outside to serve as a supply port. When an arm is inserted into the supply port, a cap chip is mounted to the arm, as well as the cap chip presses the mini chip so that the mini chip is also mounted to the chip base. When the mounting operation is complete, a push-out member pushes the mini chips and cap chips so that the mini chips and cap chips are automatically fed to the supply port.
摘要:
This invention provides a swing type electrode chip replacement apparatus which enables an electrode chip to be attached/detached without damaging a shank even if the shank is bent. The swing type electrode chip replacement apparatus comprises a fixed plate 20 located in the vicinity of a spot welding machine and a movable plate 21 slidable in the back-forth direction on the fixed plate 20, its front end being swingable in the right-left direction. An attaching unit 1 for attaching an electrode chip 95 to the tip of a shank 90 of a spot welding machine or a magazine of the electrode chip 60 for removing the electrode chip 95 is loaded on this movable plate 21, which is slidable in the back-forth direction and swingable in the right-left direction when the shank 90 comes into contact with the attaching unit 1 or the magazine of electrode chips 60.
摘要:
A cap tip detaching apparatus for a resistance welding machine that detaches a cap tip fitted to a shank of the resistance welding machine. The apparatus includes a pawl portion including a fixed pawl and a movable pawl. The fixed pawl extends in a direction orthogonal to the shank axis so as to be brought into close contact with a lower end portion of the shank. The movable pawl, forming a pair with the fixed pawl, is provided in a leading end of a leverage type lever and is brought into close contact with an upper end portion of the cap tip. A drive portion is included for moving the pawl portion to a portion between the shank and the cap tip. A rotating mechanism, working with the drive portion, rotates the lever to disconnect the cap tip from the shank by pushing down the movable pawl.
摘要:
A four-wheel steering vehicle including a four-wheel steering mechanism for controlling a steering of front and rear wheels based on a predetermined steering ratio property in accordance with an operation of a steering wheel, and an anti-lock braking system for controlling a braking force acted on each of the front and rear wheels to prevent the wheels from locking during a braking operation. The vehicle further comprises a stepping motor for controlling a steering ratio of a steering amount of the rear wheels to a steering amount of the front wheels in accordance with a vehicle speed based on said steering ratio property, fail detecting device for detecting an abnormal condition of the anti-lock braking system, compensating device for receiving signals from the fail detecting device and compensating the steering ratio property so that the rear wheels are steered in a direction and amount to improve a driving stability of the vehicle during a braking operation.
摘要:
A chloronicotinic acid compound is prepared by hydrolyzing a 3-trichloromethyl pyridine compound in the presence of sulfuric acid or phosphoric acid. By this process, a highly pure chloronicotinic acid compound is obtainable in good yield. This compound is useful as an intermediate for medicines.
摘要:
A synthetic resin composition containing, 100 parts by mass of a synthetic resin, 0.001-10 parts by mass of a triazine compound represented by (1) below, and 0.001-10 parts by mass of a diarylpentaerythritol diphosphite compound represented by general formula (2) shown below and/or 0.001-10 parts by mass of an organic cyclic phosphite compound represented by formula (3) below and/or 0.001-10 parts by mass of a hindered phenol compound represented by formula (4) below. In formula (1), R1 is C1-C12 alkyl group, etc.; R2 is C1-C8 alkyl group, etc.; R3 is hydroxyl group, etc.; and R4 is —O—R1, etc. In formula (2), R5 is C1-C4 alkyl group, etc. In formula (3), R6 and R8 is each C1-C4 alkyl group, etc, and R7 is C1-C18 alkyl group. In formula (4), R9 is a residue remaining after removing n hydroxyl groups from a mono- to tetravalent alcohol, and n is an integer 1-4.
摘要:
A synthetic resin composition is obtained by mixing, to 100 parts by mass of a synthetic resin, 0.001-10 parts by mass of a triazine-based compound represented by general formula (1), 0.001-10 parts by mass of a diaryl pentaerythritol diphosphite compound represented by general formula (2), and/or 0.001-10 parts by mass of an organic cyclic phosphite compound represented by general formula (3), and/or 0.001-10 parts by mass of a hindered phenolic compound represented by general formula (4). (In formula (1), R1 represents an alkyl group having 1-12 carbon atoms, R2 represents an alkyl group having 1-8 carbon atoms, R3 represents a hydroxy group, and R4 represents —O—R1. In formula (2), R5 represents an alkyl group having 1-4 carbon atoms. In formula (3), R5 and R8 represent an alkyl group having 1-4 carbon atoms, and R7 represents an alkyl group having 1-18 carbon atoms. In formula (4), R9 represents a residue obtained by removing n hydroxyl groups from a monovalent to tetravalent alcohol, and n represents an integer 1-4.)