摘要:
A fuel cell stack includes a plurality of membrane electrode assemblies (MEAs) and a stamped metal separator. The metal separator is positioned between the membrane electrode assemblies. The separator includes at least one channel on both surfaces of the separator formed by a stamping process. The separator comprises a plurality of holes, each of which form a manifold communicating with each the channels.
摘要:
A memory card socket is provided. The memory card socket includes an outer case, an inner case which is movable within the outer case and includes a slot into which a memory card is insertable. The memory card socket also includes a locking portion which locks the inner case to the outer case upon a withdrawal of the memory card.
摘要:
An apparatus and method for testing a digital device or software installed in the digital device are provided. According to one aspect, the apparatus for testing the digital device or software installed in the digital device includes a test agent for providing a test execution environment, and the test agent performs a test for each test case in response to a command from a test director. The test agent may report an execution state of the test to the test director, and the test director may generate a test result report based on the report or resumes the test upon generation of error.
摘要:
Fuel cell systems and methods for controlling fuel cell systems. In one embodiment, the method includes supplying power produced by operating the fuel cell stack in a maximum output mode to the load while concurrently charging the secondary cell with the produced power when an amount of charge of the secondary cell is smaller than a first standard value, supplying both power produced by operating the fuel cell stack in a stable output mode and the power discharged by the secondary cell to the load when the amount of charge of the secondary cell is larger than a second standard value, and maintaining an existing output mode among the output modes when the amount of charge of the secondary cell is larger than the first standard value and smaller than the second standard value.
摘要:
In a method of throttling temperature of a nonvolatile memory device including a memory cell array, a current temperature of the nonvolatile memory device may be detected periodically. The current temperature may be compared with a reference temperature. Whether an external input/output command, which is provided by a memory controller, exists may be determined when the current temperature is lower than the reference temperature. An input/output operation, which corresponds to the external input/output command, may be performed on the memory cell array when the external input/output command exists. A desired and/or alternatively predetermined internal input/output operation may be performed on the memory cell array regardless of a command from the memory controller when the external input/output command does not exist.
摘要:
There is provided a lead pin for a package substrate including: a connection pin being inserted into a hole formed in an external substrate; a head part formed on one end of the connection pin; and a barrier part formed on one surface of the head part in order to block the path of a solder paste so that the solder paste is prevented from flowing so as to cover the upper portion of the head part when the head part is mounted on the package substrate.
摘要:
A memory card socket is provided. The memory card socket includes an outer case, an inner case which is movable within the outer case and includes a slot into which a memory card is insertable. The memory card socket also includes a locking portion which locks the inner case to the outer case upon a withdrawal of the memory card.
摘要:
Disclosed herein are a package substrate and a fabricating method thereof. The package substrate includes a substrate including at least one conductive pad, an insulation layer formed on the substrate and including an opening through which the conductive pad is exposed, a blister prevention layer formed along a top surface of the conductive pad exposed through the opening and a sidewall of the insulation layer, a metal post made of at least one alloy material and formed on the blister prevention layer, and a heat-diffusion prevention film formed on the metal post.
摘要:
Disclosed herein is a lead pin for a package substrate.The lead pin for the package substrate includes a cylindrical connection pin; and a head part that is formed on one end of the connection pin and has a convex round part formed on the lower end of the head part, having a step part. When the lead pin for the package substrate is mounted on the package substrate, the bulge phenomenon of a solder paste that surrounds the head part and is melted is prevented by a flange part, thereby making it possible to prevent the connection pin from being polluted and to improve a contact defect such as a short defect or the like when coupling a socket.
摘要:
Disclosed is a package substrate, in which the plating area of a first plating layer formed on a layer which is to be connected to a motherboard is larger than the plating area of a second plating layer formed on a layer which is to be connected to an electronic part, and open portions are formed on the first plating layer, thus balancing the plating areas of the plating layers formed on the layers of the package substrate, thereby minimizing warpage of the package substrate due to differing coefficients of thermal expansion.