摘要:
A semiconductor integrated circuit that is efficiently reduced in a noise level is offered. P-channel type MOS transistors M1 and M2 serving as differential input transistors have a thin gate oxide film in order to reduce the noise level. A protection circuit to protect the P-channel type MOS transistors M1 and M2 from overvoltage is formed including P-channel type MOS transistors M3 and M4. The P-channel type MOS transistor M3 is a first protection transistor to protect the P-channel type MOS transistor M1 from overvoltage, and is connected to a drain of the P-channel type MOS transistor M1. The P-channel type MOS transistor M4 is a second protection transistor to protect the P-channel type MOS transistor M2 from overvoltage, and is connected to a drain of the P-channel type MOS transistor M2.
摘要:
A semiconductor integrated circuit that is efficiently reduced in a noise level is offered. P-channel type MOS transistors M1 and M2 serving as differential input transistors have a thin gate oxide film in order to reduce the noise level. A protection circuit to protect the P-channel type MOS transistors M1 and M2 from overvoltage is formed including P-channel type MOS transistors M3 and M4. The P-channel type MOS transistor M3 is a first protection transistor to protect the P-channel type MOS transistor M1 from overvoltage, and is connected to a drain of the P-channel type MOS transistor M1. The P-channel type MOS transistor M4 is a second protection transistor to protect the P-channel type MOS transistor M2 from overvoltage, and is connected to a drain of the P-channel type MOS transistor M2.
摘要:
This invention offers a signal processing circuit of an electrostatic capacity type touch panel which is capable of switching between a differential input mode and a single input mode and has an extended adjustable range of an offset in the single input mode. The signal processing circuit of this invention includes a first sensor circuit of a differential input type, a second sensor circuit of a single input type, a third and fourth electrostatic capacitors that are variable capacitors for calibration to adjust the offset in an output voltage of the first sensor circuit, and a switching control circuit to control so as to put in operation one of the first and second sensor circuits. The switching control circuit also controls so that the third and fourth electrostatic capacitors for calibration are connected in parallel to each other when the second sensor circuit is put in operation.
摘要:
A detection circuit includes: a control signal updating circuit configured to update a digital control signal for controlling drive of a sensor based on a clock having a predetermined frequency; a digital to analog converter configured to convert the digital control signal output from the control signal updating circuit to an analog control signal for driving the sensor; a comparator configured to compare a voltage level of a detection signal from the sensor which changes depending on the analog control signal with a reference voltage having a predetermined voltage level to output a comparison result signal; and a counter configured to count to measure a time period depending on the detection signal based on the comparison result signal output from the comparator and a clock having a predetermined frequency.
摘要:
A track frame assembly to guide the conveyor chain or the like in a conveyor system is provided which includes at least a pair of frame members (A1), coupling block (10) and track rails (D). The frame member (A1) includes a base plate portion (1) and a pair of bent plate portions (2 and 4). The bent plate portions (2 and 4) have a plurality of cuts (5) formed therein nearly perpendicularly to the length thereof at predetermined intervals. When the base plate portion (1) is curbed in the direction of its thickness, the cuts (5) are deformed and the bent plate portions (2 and 4) are bent in the direction of their width, so that the frame members can be deformed easily and positively to a desired curved shape. Therefore, the track frame assembly is highly lightweight and rigid, simply configured, easy to produce and suitable for mass production, easy to handle and assemble. Thus the track frame assembly is optimally usable as a curved track portion in the conveyor system.
摘要:
To reduce a total power amount required to drive an elevator by a commercial power supply during a peak power-consumption time period, for instance, afternoon in summer time, a control apparatus for this elevator is arranged by employing: a converter for rectifying AC electric power to be converted into DC electric power; and inverter for inverting the DC electric power into AC electric power having a variable voltage and a variable frequency; a motor driven by said AC electric power having the variable voltage and the variable frequency so as to operate an elevator; a power storage apparatus for charging thereinto electric power; and a power controller for using both the power storage apparatus and the commercial power supply so as to supply the electric power to the inverter, and for controlling at least any one of the power storage apparatus and the commercial power supply in order to supply electric power which is required for the inverter.
摘要:
An elevator control apparatus includes a power storage unit for storing the DC power; a charge/discharge control circuit that controls a state of charge of the power storage unit, outputs a drive signal to charge the power storage unit with the DC power during a halt of the elevator based on operational information regarding the elevator received from the controller, and outputs a stop signal to stop charging when a voltage of the power storage unit reaches a preset voltage; and a charge/discharge circuit for starting charging the power storage unit with the DC power in response to the drive signal, and stopping the charging in response to the stop signal. This arrangement ensures landing of the elevator in case of a power failure, eliminates a peak in power consumption, and permits energy saving by effectively using power produced in a regenerative mode of the elevator.
摘要:
An elevator control device includes: a convertor which rectifies a.c. power and converts the a.c. power into d.c. power; an inverter which converts the d.c. power into a.c. power having a variable voltage and a variable frequency; an electric motor which is driven by the a. c. power having a variable voltage and a variable frequency to operate an elevator; a power storing unit which is charged with electric power; a required-power arithmetically operating circuit which calculates power required by the elevator, which is an electric power required for the operation of the elevator or an electric power caused by the operation of the elevator; and a charging/discharging control circuit which controls charging and discharging of the power storing unit based on the power required by the elevator.
摘要:
A configuration for mounting a fuel line on an engine which reduces the number of parts needed to mount the fuel lines and the fuel cock, reduces the number of assembly and mounting processes, and improves both the handling qualities and the safety of the engine at a low cost. In this fuel line configuration for a single-cylinder multi-purpose engine having a fan cover and a front cover on the front of the engine, a fuel tank on top of the engine is connected to the carburetor by a fuel line with a fuel cock on it. Semicircular grooves are provided in the fan cover and front cover, and the fuel line is engaged in a channel formed by the two grooves and thereby immobilized. The fuel cock, which is attached to the front end of the fuel line, is mounted to the front cover.
摘要:
The objective of this invention is to solve two sorts of problems in an engine using a chain transmission scheme with the camshaft as the output shaft. One set of problems results from the stretching of the chain. The other concerns lining up the crankshaft and camshaft during assembly. With this invention, power is transmitted from the crankshaft to the camshaft by means of a silent chain. The silent chain is tensioned before use to suppress its initial tendency to stretch. The chain is installed so that the slack in the chain is 1 to 2% looser than its theoretically calculated distance value between the crankshaft and the camshaft. (A chain tensioner is not used.) One or several marks are provided on the opposed surfaces of the aforesaid silent chain and the two sprockets to help match the positions of the crankshaft and camshaft.