Abstract: A light for headgear includes a shroud plate having a shell configured to receive a goggle mount, the shell having a periphery generally conforming to a contour of the headgear; and a lighting system on the shell having at least one light. The light further includes a power unit electrically coupled to the lighting system.

Abstract: A light for headgear includes a shroud plate having a shell configured to receive a goggle mount, the shell having a periphery generally conforming to a contour of the headgear; and a lighting system on the shell having at least one light. The light further includes a power unit electrically coupled to the lighting system.

Abstract: A light for headgear includes a shroud plate having a shell configured to receive a goggle mount, the shell having a periphery generally conforming to a contour of the headgear; and a lighting system on the shell having at least one light. The light further includes a power unit electrically coupled to the lighting system.

Abstract: A light for headgear includes a shroud plate having a shell configured to receive a goggle mount, the shell having a periphery generally conforming to a contour of the headgear; and a lighting system on the shell having at least one light. The light further includes a power unit electrically coupled to the lighting system.

Abstract: A system for powering a disk drive microprocessor using the back electromotive force (BEMF) generated by the still-spinning spindle motor after host DC power fails, and for parking the heads under microprocessor control in a manner similar to that of a conventional seek. The system detects failing host computer DC power, converts the BEMF to DC, applies the DC power to the microprocessor, and moves the heads toward the parking zone under microprocessor control in accordance with a seek profile or other suitable control method of a type conventionally used for seeking. Thus, the heads travel to the parking zone at controlled velocities that minimize the travel or seek time.

Abstract: A self-contained disk drive actuator velocity controller for, independently of the disk drive microprocessor, placing the actuator into a velocity mode to slew the actuator to a pre-programmed velocity during parking, unparking, power interruption or microprocessor malfunction. The velocity controller may place the actuator into the velocity mode in response to a timeout signal that is generated in the event the microprocessor fails to update the current demand DAC within a predetermined timeout interval. The velocity controller may also place the actuator into the velocity mode in response to a supply power loss. In addition, the velocity controller may be triggered in response to a command from the microprocessor to park or unpark the actuator. The velocity controller monitors the BEMF generated by the actuator motor coil and adjusts the gain of the actuator motor driver accordingly until BEMF reaches a value that corresponds to the target velocity.