초록 ▼

A radial finned heat sink assembly for an electrical component is constructed from a graphite material, which may be resin impregnated. The assembly includes a base, and a plurality of spaced parallel planar fin members supported by the base. Each fin member includes a planar fin of an anisotropic g

A radial finned heat sink assembly for an electrical component is constructed from a graphite material, which may be resin impregnated. The assembly includes a base, and a plurality of spaced parallel planar fin members supported by the base. Each fin member includes a planar fin of an anisotropic graphite material having graphite layers aligned primarily with the plane of the fin. In a first construction the fin members include integral core portions. In a second construction the core portions are separately formed so that the graphene layers of the core portion are aligned primarily parallel to the core axis so that heat is efficiently transmitted from the base to the plate members along the core axis.

대표청구항 ▼

A radial finned heat sink assembly for an electrical component is constructed from a graphite material, which may be resin impregnated. The assembly includes a base, and a plurality of spaced parallel planar fin members supported by the base. Each fin member includes a planar fin of an anisotropic g

A radial finned heat sink assembly for an electrical component is constructed from a graphite material, which may be resin impregnated. The assembly includes a base, and a plurality of spaced parallel planar fin members supported by the base. Each fin member includes a planar fin of an anisotropic graphite material having graphite layers aligned primarily with the plane of the fin. In a first construction the fin members include integral core portions. In a second construction the core portions are separately formed so that the graphene layers of the core portion are aligned primarily parallel to the core axis so that heat is efficiently transmitted from the base to the plate members along the core axis. he steps of: (a) generating a position error signal indicative of the head's position with respect to a centerline of a selected track; (b) processing the position error signal to generate a nominal control effort signal; (c) sensing a vibration affecting the disk drive to generate a sensor signal; (d) generating a feed-forward signal in response to the sensor signal; (e) combining the nominal control effort signal with the feed-forward signal to generate the adjusted control effort signal applied to the actuator; (f) during a normal read operation, substantially removing the contribution of the feed-forward signal from the adjusted control effort signal; and (g) during a retry read operation, including the contribution of the feed-forward signal in the adjusted control effort signal. 6. The method of enhancing a retry read operation in a disk drive as recited in claim 5, wherein the disk drive further comprises a plurality of programmable parameters, the method further comprising the steps of: (a) during a first number of disk revolutions of the retry read operation, modifying the programmable parameters with the adaptive vibration compensator disabled; and (b) during a second number of disk revolutions of the retry read operation, enabling the adaptive vibration compensator. 7. The method of enhancing a retry read operation in a disk drive as recited in claim 6, further comprising the step of adjusting a closed-loop parameter associated with the feed-forward signal during the second number of revolutions. 8. The method of enhancing a retry read operation in a disk drive as recited in claim 6, further comprising the step of disabling a normal write operation if the sensor signal exceeds a predetermined threshold.