摘要:
A magneto-resistance effect magnetic head having a uniform bias distribution and adapted for avoiding shorting between a magneto-resistance device and a bias conductor wherein a magneto-resistance device 5 and a bias conductor 6 for applying a bias magnetic field to the magneto-resistance device 5 are interposed between a lower shielding magnetic member 1 and an upper shielding magnetic member 2. The bias conductor is embedded in a groove formed in the shielding magnetic member provided on the opposite side of forward and rear electrodes with respect to the magneto-resistance effect device.
摘要:
In a magnetoresistance thin film magnetic head, a bias conductor and a magnetoresistive magnetic sensing section are electrically connected to each other in series. Further, the bias conductor (7) is formed in such a pattern as to have a width and distance from a magnetic recording medium facing surface which become larger as it is away from a portion transversing the magnetoresistive magnetic sensing section.
摘要:
A magneto-resistance effect type thin film magnetic head which does not produce significant Barkhausen noises and has stabilized characteristics even where the track width is smaller than, for example, 10 .mu.m. The magnetic head comprises a base member, a lower layer thin film magnetic core and an upper layer thin film magnetic core layered on the base member in such a manner that a magnetic gap is formed between front ends thereof, the gap being open to an opposing face of the magnetic head which is in contact with or opposed to a magnetic record medium, and a magneto-resistance effect magnetic sensing section disposed in the magnetic gap between the lower and upper layer thin film magnetic cores. The front end of the lower layer thin film magnetic core which defines the magnetic gap has a width selected to be smaller than the width of the front end of the upper layer thin film magnetic core which defines the magnetic gap so as to define a track width of the magnetic gap.
摘要:
A magneto-resistance effect type magnetic head incorporates a grounded conductive layer, a second thin film magnetic core and an MR sensing part, the conductive layer being located near the thin film magnetic core, the layer and the core being electrically connected. The conductive layer is further connected electrically to an electrode of the MR sensing part, the electrode facing an air bearing surface. This setup protects the MR sensing part from static electricity destruction, thus providing a magneto-resistance effect type magnetic head of high reliability.
摘要:
A transmitter (1) applies current from a power supply node to a ground node in synchronization with only a rise of an input signal and transmits a transmission signal including an RF pulse signal to a receiver (2). The receiver (2) applies current from a node (231) on which precharge is performed to a ground node only at the reception of the RF pulse signal, decreases the potential of the node (231) from a precharge potential Va to 0 V, and outputs an H-level output signal by detecting the decreased potential 0 V. After receiving the RF pulse signal, the receiver (2) performs precharge to change the potential of the node (231) to the potential Va.
摘要:
The invention relates to a test method and a test apparatus for a semiconductor integrated circuit device having a high-speed input/output device, and it has for its object to perform the test of the high-speed I/O exceeding 1 GHz, promptly by a simple board construction, without altering a test system for individual I/O specifications. A semiconductor integrated circuit device (1) having a high-speed input/output device (2) is set on a load board (3) which is provided with loopback paths (4) each connecting the external output terminal and external input terminal of the semiconductor integrated circuit device (1) by transmission lines, and the operation of the high-speed input/output device (2) is tested within the semiconductor integrated circuit device (1) by utilizing test means (5) disposed inside the semiconductor integrated circuit device (1), and the loopback paths (4).
摘要:
An apparatus for covering a plurality of permanent magnets on a rotor with a cylindrical sleeve has a movable jig, a holder jig having a plurality of insertion grooves for inserting therein the permanent magnets disposed in grooves of the rotor, the holder jig and the movable jig being pressable partly into an insertion end of the cylindrical sleeve, a plurality of resilient members disposed in the insertion grooves for pressing the permanent magnets against the outer circumferential surface of the rotor, and a presser device for inserting the movable jig, together with the rotor and the permanent magnets into the cylindrical sleeve under the guidance of the holder jig. The permanent magnets on the rotor are reliably and efficiently covered with the cylindrical sleeve without the need for an adhesive to secure the permanent magnets to the rotor.
摘要:
A semiconductor assembly comprises first and second containers which contain respective semiconductor chips and are stacked one over another. First and second external leads extending from the insides of the respective containers to outside thereof are bent so as to be connected to each other. The first and the second containers may be provided at corresponding positions with a recess and a projection to be engaged each other for positional alignment. There may be provided first and second heat radiating plates extending from the insides of the respective containers to outside thereof are bent so as to be connected to each other.
摘要:
An apparatus for manufacturing a stator. On a split core of the stator, there are wound main conductors and two auxiliary conductors, which are thinner than but correspond to the main conductors. These main conductors are arrayed and wound in a plurality of layers, such that the main conductors of an upper layer are arranged in the valleys between the adjoining main conductors of a layer. For the main conductors of a first layer, the auxiliary conductors are arranged in a first space and a second space. For the main conductors of the second and subsequent layers, the auxiliary conductors are arranged in a third space, and the auxiliary conductors are arranged in a fourth space.
摘要:
Data transfer speed is increased in a semiconductor storage device in which the core unit and the interface unit are separate chips. The device has a plurality of core chips through in which a memory cell is formed, and an interface chip in which a peripheral circuit is formed for the memory cell. The plurality of core chips through have latch circuit units through for temporarily storing data to be outputted by the memory cell, and latch circuit units through for temporarily storing data to be inputted to the memory cell, respectively, and these latch circuit units through and latch circuit units through are connected in a cascade to the interface chip. Since the plurality of latch circuit units connected in a cascade can thereby perform a pipeline operation, it becomes possible to achieve high-speed data transfer.