摘要:
A magnetic disk apparatus includes a spindle motor for rotating a magnetic disk. Either a first pulse-train signal or a second pulse-train signal is selectively generated. The first and second pulse-train signals are different from each other in pulse frequency. When the first pulse-train signal is generated, the spindle motor is controlled to rotate at a first rotational speed in response to the first pulse-train signal. When the second pulse-train signal is generated, the spindle motor is controlled to rotate at a second rotational speed in response to the second pulse-train signal. The second rotational speed differs from the first rotational speed.
摘要:
There is provided a semiconductor integrated circuit device which has realized high speed operation, high integration density and highly efficient layout of the RAM macro, in which a memory array which is divided into four sections in the X and Y coordinates directions is disposed, a first input circuit for receiving a signal which requires optimization for a signal delay is disposed to the center of such four memory arrays, a second input circuit for receiving a data input and control signals thereof is disposed to the center of Y coordinate corresponding to the extending direction of the word line and a signal line for transferring an input signal from the external circuit of the RAM macro to the first and second input circuits is formed using an upper layer wiring for the wiring to form the memory array.
摘要:
A semiconductor integrated circuit device includes a first variable delay circuit which delays a timing signal for activating a sense amplifier which is supplied with a signal read out from a memory array and amplifies the signal so that a timing difference between a dummy signal read out from a dummy memory cell and the timing signal of the sense amplifier is detected by a detection circuit to be made small in accordance with an output of the detection circuit, and a second variable delay circuit which adjusts a relative timing difference between the dummy signal and the timing signal of the sense amplifier.
摘要:
A control system for automatically stopping and starting the vehicle's engine is disclosed, which performs the automatic engine-stop and start control while the negative pressure of the fuel tank is maintained at a suitable level. The system comprises a canister for absorbing evaporating fuel generated in the fuel tank and purging the absorbed evaporating fuel into an air intake system of the engine; a pressure control section for controlling the inner pressure of the fuel tank in a manner such that the internal pressure is maintained at a predetermined level lower than the atmospheric pressure at least while the engine is operated; and an engine stop/start determining section for stopping or starting the vehicle according to the driving state of the vehicle, wherein the engine stop/start determining section determines to prohibit an engine stopping operation when the internal pressure of the fuel tank is higher than the predetermined level.
摘要:
A threading mechanism for a magnetic tape machine is contrived so as to obtain sufficient driving power when the threading arm is latched with a leader block at a position where the leader block is stopped in a cartridge or a machine reel, and is also contrived so as to avoid impact force based on a driving motor even when the threading arm stops suddenly at the stop position. The positions where the leader block is stopped in the cartridge and the machine reel are inside a track of the threading arm which swings around its pivoting point and the leader block is threaded therebetween. A driving arm for swinging the threading arm is motor-driven around a pivoting point of the driving arm itself. The driving arm causes the threading arm to work together between the positions where the leader block is stopped, and cancels the working with the threading arm in the direction of the trace over the disengaging positions, so as to be swung.
摘要:
In an electromagnetic relay in which a contact mechanism 50 provided on a base 10 is driven by a card 60 which slides and moves in parallel to the axis of an electromagnet block 20 provided in the base 10 as the electromagnet block 20 is magnetized and demagnetized, the base 10 comprises a guide portion 17 for restricting the card 60 in its position. This prevents variations in the performance characteristics so that high productivity and long service life of contacts can be obtained.
摘要:
A vacuum arc deposition apparatus includes arc power sources having cathodes connected to both ends of an evaporation source; exciting coils disposed at positions axially outwardly far from both the ends of the evaporation source so as to be coaxial with the evaporation source; and coil power sources independently connected to the exciting coils. In this apparatus, each of the coil power sources is capable of controlling the exciting current in such a manner that the film thickness and the consumption of the evaporation source are suitably distributed. Moreover, an arc containment device of the vacuum arc deposition apparatus includes an arc containment body having a diameter substantially the same as that of a cylindrical evaporation source, which is disposed at one end portion of the evaporation source.
摘要:
The present invention relates to an arc ion plating device utilizing a vacuum arc discharge to be utilized for the surface process of works and to an arc ion plating system provided with the above-mentioned device, and the present invention offers the device and the system which are able to realize extremely high productivity by an efficient handling of works. The device according to the present invention comprises a rod-shaped evaporation source and works to be coated with a film being disposed so as to surround the rod-shaped evaporation source, The device is so constituted that the works can be moved relative to the rod-shaped evaporation source in the axial direction of the rod-shaped evaporation source.