Abstract: A flyback power converter includes a power transformer, a first lossless voltage conversion circuit, a first low-dropout linear regulator and a secondary side power supply circuit. The first low-dropout linear regulator (LDO) generates a first operation voltage as power supply for being supplied to a sub-operation circuit. The secondary side power supply circuit includes a second lossless voltage conversion circuit and a second LDO. The second LDO generates a second operation voltage. The first operation voltage and the second operation voltage are shunted to a common node. When a first lossless conversion voltage is greater than a first threshold voltage, the second LDO is enabled to generate the second operation voltage to replace the first operation voltage as power supply supplied to the sub-operation circuit; wherein the second lossless conversion voltage is lower than the first lossless switching voltage.

Abstract: An information handling system having a reconfigurable cooling fan holder including a plurality of cooling fans of a cooling system operatively coupled to the reconfigurable cooling fan holder, a reconfigurable frame having a plurality of slidingly adjustable walls including a pair of lengthwise slidingly adjustable walls and a widthwise slidingly adjustable wall where the pair of lengthwise slidingly adjustable walls may be expanded or reduced in length by sliding the at least two slide bars nested adjacent to one another forming each lengthwise slidingly adjustable wall to extend or contract each lengthwise slidingly adjustable wall, and the widthwise slidingly adjustable wall may be expanded or reduced in width by sliding the at least two slide bars nested adjacent to one another forming the widthwise slidingly adjustable wall to extend or contract the widthwise slidingly adjustable wall for adjusting the width and length of the reconfigurable cooling fan holder.

Abstract: A package structure includes a first carrier, a second carrier, and a first electronic device. The first carrier is electrically connected to a first voltage. The second carrier includes a first substrate and a first interconnect structure. The first substrate is in contact with the first carrier, the first interconnect structure is electrically connected to a second voltage, and the first interconnect structure and the first carrier are deposited on two opposite sides of the first substrate. The first electronic device is deposited on the first interconnect structure and away from the first carrier. The first electronic device is in contact with the first interconnect structure.

Abstract: A printed circuit board has a copper clad laminate and a plurality of holes. The copper clad laminate for dissipating heats generated from a chip when the chip operates has a plurality of solder paste disposed areas. The plurality of holes situate on the copper clad laminate and each of the holes does not communicate with others, wherein the plurality of holes are nonconductors. Each of the solder paste disposed areas is surrounded by the plurality of holes and each solder paste disposed areas is surrounded by at least two holes.

Abstract: A semiconductor substrate includes an interconnection structure and a dielectric layer. The dielectric layer surrounds the interconnection structure and defines a first cavity. The first cavity is defined by a first sidewall, a second sidewall, and a first surface of the dielectric layer. The first sidewall is laterally displaced from the second sidewall.

Abstract: A semiconductor substrate includes an interconnection structure and a dielectric layer. The dielectric layer surrounds the interconnection structure and defines a first cavity. The first cavity is defined by a first sidewall, a second sidewall, and a first surface of the dielectric layer. The first sidewall is laterally displaced from the second sidewall.

Abstract: A method for enhancing the accuracy of sounds heard by a hearing-impaired listener is disclosed. The method for enhancing the accuracy of sounds heard by a hearing-impaired listener includes receiving an input sound, determining if it is necessary to modify the frequency of the input sound, and modifying the input sound into a modified input sound if necessary. The determination relies on the frequency and energy of the input sound. The ratio of the energy of lower frequencies of the modified input sound will be increased.

Abstract: A method for enhancing the accuracy of sounds heard by a hearing-impaired listener is disclosed. The method for enhancing the accuracy of sounds heard by a hearing-impaired listener includes receiving an input sound, determining if it is necessary to modify the frequency of the input sound, and modifying the input sound into a modified input sound if necessary. The determination relies on the frequency and energy of the input sound. The ratio of the energy of lower frequencies of the modified input sound will be increased.