Abstract: A printed circuit cable assembly (PCCA) for a hard disk drive (HDD) is disclosed. The PCCA includes a stiffener portion having an elongated shape that includes an integrated circuit (IC) chip. The PCCA also includes a flexible portion extending from the elongated stiffener portion, wherein the PCCA is configured to be mountable on a headstack of the HDD such that an entire footprint of the IC chip overlays a metallic portion of the headstack of the HDD.

Abstract: A printed circuit cable assembly (PCCA) for a hard disk drive (HDD) is disclosed. The PCCA includes a stiffener portion having an elongated shape that includes an integrated circuit (IC) chip. The PCCA also includes a flexible portion extending from the elongated stiffener portion, wherein the PCCA is configured to be mountable on a headstack of the HDD such that an entire footprint of the IC chip overlays a metallic portion of the headstack of the HDD.

Abstract: The invention provides a signal transmission apparatus using a rotary transformer by which a wide bandwidth and a high transfer rate can be used without a significant increase of the cost. The signal transmission apparatus includes a transmission side circuit and a reception side circuit between which a rotary transformer is interposed. A passive element circuit including an inductance element is connected to an output stage of the rotary transformer in parallel to the transformer. The passive element circuit has an inductance value set substantially equal to or lower than an equivalent inductance value when the circuit of the rotary transformer side is viewed from the reception side circuit.

Abstract: A disk drive for use with interchangeable flexible magnetic disks of potentially different weights, comprising a disk drive motor for imparting rotation to a disk loaded therein, and a stepper motor for moving a transducer across the track turns on the disk. Since the current consumption of the disk drive motor is subject to change according to the weight of each disk being driven, a current detector circuit is provided for detecting the magnitude of the current being consumed by the disk drive motor. A current control circuit controls the magnitude of the current supplied to the stepper motor in inverse proportion to the detected magnitude of the disk drive motor current. The stepping pulse rate is also varied for making the rotational speed of the stepper motor higher with a decrease in the magnitude of the disk drive motor current. Thus the seek speed is made progressively higher as the disk weight grows less, without increasing the total current requirement of the disk drive.

Abstract: A magnetic head device has a wiring board on which are formed first electrode pads connected to a head chip through lead wires and second electrode pads electrically connected to the first electrode pads and arranged for external connection. The lead wires connected to the first electrode pads are covered with an insulating resin. An aperture is formed in the wiring board so as to lie between the first electrode pads and the second electrode pads.