摘要:
A magnetic recording/reproduction apparatus of the present invention, which records/reproduces information on/from a magnetic tape by passing the tape around a rotary head cylinder having a rotary head for a predetermined arc, includes: a capstan shaft; a pinch roller; a first reel base rotatably attached to a shaft; a second reel base rotatably attached to a shaft; and an idler supported swingably to swing to the second reel base when the capstan is rotated in a first direction and to the first reel base when the capstan shaft is rotated in a second direction, wherein the idler includes a gear portion which rotates in association with the rotation of the capstan shaft. The above components of the magnetic recording/reproduction apparatus are situated in such a manner that when the running of a magnetic tape is to be shifted from a first direction to a second direction, the rotation of the capstan shaft, in the first direction stops, the pinch roller moves away from the capstan shaft, the capstan shaft is rotated in the second direction by a predetermined amount so that the idler swings to the first reel base, the capstan shaft stops again, the pinch roller presses the magnetic tape against the capstan shaft, and the capstan shaft is rotated again in the second direction and the gear portion to be coupled with the first reel base, the gear portion rotating the first reel base in a direction in which the magnetic tape is wound onto the first reel.
摘要:
A memory circuit is equipped with a first integrated circuit including a first set of terminals which are connected to a bus and a second integrated circuit including a second set of terminals which are connected to the bus. The signal lines, which one-to one connect the terminals in the first set of terminals to the terminals in the second set of terminals, are arranged so that no pair of signal lines connected to adjacent terminals in the first set of terminals is connected to an adjacent pair or terminals in the second set of terminals.
摘要:
The invention relates to a loading mechanism for a magnetic recording/playback apparatus and is directed to provide a positioning mechanism which can reliably and fixedly position a loading boat with a quite simple structure when completing an operation of withdrawing a magnetic tape. The invention is also directed to provide a loading post driving and pressing device which can eliminate the need of using a two-staged gear fitted with a spring, position two loading posts under pressing by one urging means, and realize reduction of the size, weight and thickness. The invention is further directed to provide a loading post driving device in which a gear serving as a prime mover part has the two-stages structure to realize reduction of the size, weight and height, and driving force can be directly transmitted from the gear serving as a prime mover part to a large loading gear by using no geneva gear.
摘要:
A wobble plate type refrigerant compressor is disclosed which includes a compressor housing having a crank chamber and a cylinder block which is provided with an axial central bore and a plurality of cylinders. A plurality of pistons are slidably fitted within each of the cylinders. A wedge-shaped cam rotor is disposed within the crank chamber to rotate together with a drive shaft. A wobble plate is coupled to the pistons through each corresponding connecting rod. The wobble plate is disposed on the inclined surface of the cam rotor to convert rotating motion of the cam rotor into reciprocating motion to be imparted to the pistons while preventing the rotating motion of the wobble plate. A first bevel gear is fixed on the wobble plate and a second bevel gear connected thereto is supported by the cylinder block. The second bevel gear includes a shank portion which is non-rotatably disposed within the central bore of the cylinder block by means of at least one engaging mechanism, such as a key/groove mechanism, provided between the second bevel gear and the cylinder block. The first and second bevel gears intermesh through spherical member to prevent rotation of the wobble plate. The engaging mechanism includes an axial hollow space or groove formed between the shank portion of the second bevel gear and the cylinder block, and a rod member or key fittingly disposed within the axial hollow space. The engaging mechanism further includes a dampening member or vibroisolating member for dampening torque which acts on the shank portion of the second bevel gear to thereby reduce vibration and noise.
摘要:
A tape loading device of a magnetic recording/reproducing apparatus, includes: first and second tape guide posts for taking a tape, extending between a supply side reel and a winding side reel of a tape cassette, from the tape cassette and travelling the tape to a predetermined position located outside the tape cassette; first and second loading guides for respectively guiding travels of the first and second tape guide posts to take out the tape from the tape cassette to the predetermined position; a common guide for joining a part of the first loading guide and a part of second loading guide into the same path so as to guide the first and second loading guides in order; and a branch pointer arm for switching between the common guide and the first and second loading guides, the branch pointer arm being urged to open one loading guide of the loading guides and close the other loading guide thereof, and pressed by one tape guide post of the tape guide posts when the tape guide post, moving along the common guide in precedence to the other tape guide post, has guided by the one loading guide which has been opened, whereby the one loading guide is closed and the other loading guide is opened to guide the other tape guide post of the tape guide posts.
摘要:
An input signal discrimination method is provided wherein the on/off state of an AC input signal is discriminated.An AC input signal (1) is input to a processor (21) through a photocoupler (13). The processor (21) counts pulses in a time for which the AC input signal (1) remains above a predetermined threshold level, and a time for which the signal remains below the predetermined threshold level. When the number of pulses counted while the signal remains above the predetermined threshold level is larger than a previously calculated number, it is decided that the AC input signal is on, and when the number of pulses counted while the signal remains below the predetermined threshold level is larger than a previously calculated value, it is decided that the AC input signal is off. Consequently, the on/off state of the AC input signal can be accurately discriminated in a short period of time.
摘要:
A film thickness measurement device, which measures the film thickness of an oil film of lubricating oil, formed in a gap between a piston ring and an electrode provided flush with a piston ring sliding surface of a cylinder liner, by detecting the electrostatic capacitance across the gap, employs an electrostatic capacitance detection portion, which charges the electrostatic capacitance by supplying a constant current to the electrode, detects the electrostatic capacitance based on changes in the charging voltage accompanying the charging, and outputs a detection signal indicating the electrostatic capacitance, and a film thickness computation portion, which calculates the film thickness of the oil film based on the electrostatic capacitance indicated by the detection signal input from the electrostatic capacitance detection portion.
摘要:
A package comprising an electronic component, a circuit substrate onto which the electronic component is mounted, and an interposer located between the electronic component and the circuit substrate, allowing them to be electrically connected with each other, wherein the interposer is composed of at least two sub-interposers, and the at least two sub-interposers lie in the same plane to be disposed only on electrode terminal-forming areas of both of the electronic component and the circuit substrate.
摘要:
A fuel assembly 20 is constituted by combining a plurality of fuel rods 21, holding the fuel rods 21 by a plurality of support grids 22, and arranging a lower nozzle 24 and an upper nozzle 23 at opposite ends of the fuel rods 21. A shock-absorbing device 10 for a fuel assembly is fitted to the lower nozzle 24 and the upper nozzle 23. The shock-absorbing device 10 for a fuel assembly is constituted a nozzle support 12 fitted to a depression 24U of the lower nozzle 24 and a depression 23U of the upper nozzle 23, and a buffer 11 combined with the nozzle support 12, with stiffness thereof in a longitudinal direction of the fuel rods 21 being equal to or lower than that of the nozzle support 12.
摘要:
An object of the present invention is to realize reduction in an area of an output stage driver in an interface circuit that switches between two transmission systems. The interface circuit has two driver circuits and a drive control circuit that can switch between two driving systems that are a voltage driving system and a current driving system. The two driver circuits are connected to a power supply potential via the drive control circuit. Two input signals and inverted logic signals of the input signals are inputted via a selection circuit. According to a control signal inputted into the drive control circuit, the interface circuit switches between the voltage-driving type single-ended transmission system and current driving type differential transmission system.