摘要:
It is an exemplified object of the present invention to provide a heat sink, method of manufacturing the same, and electronic apparatus having the heat sink in which a fine and inexpensive adjustment upon placement and replacement may be made to exoergic components having various shapes and calorific values, and to placement space of various shapes and dimensions. The inventive heat sink comprises a housing, a cooling fin that is separably coupled with the housing, receives heal from the exoergic components, and dissipates heat form the exoergic components, and a cooling fan that forcefully cools the cooling fin and is connected with the housing, each element can be replaced alone.
摘要:
It is an exemplified object of the present invention to provide a radiator mechanism and electronic apparatus having the radiator mechanism that can prevent destruction, deterioration, and malfunction due to heat of exoergic components or other electronic components, thermal deformation of a housing thereof, and low-temperature burn, without preventing the electronic apparatus including a printed board from miniaturization. The radiator mechanism is comprised of a cooling fan and a through hole provided in a motherboard, thereby thermally protecting a variety of circuit components mounted on the motherboard to provide a stable operation.
摘要:
A power supply controlling integrated circuit device have detection input terminals for receiving the voltages of a plurality of cells and a plurality of comparing means for comparing the voltages of the individual cells with a predetermined reference voltage. To control discharging or charging of the cells in accordance with the outputs of the comparing means, a mode terminal is provided for receiving a signal for designating the number of cells. Also provided are a first circuit that can forcibly bring part of the comparing means into a predetermined output state in accordance with the signal received at the mode terminal and a second circuit for excluding from monitoring the outputs of those comparing means which have been brought into the predetermined output state. This enables the power supply monitoring integrated circuit device to control different numbers of cells without requiring any separately-mounted component or the like.
摘要:
A battery charger outputs a high voltage even when a power supply device having a rechargeable battery is not connected to the battery charger so that the battery charger can supply the high voltage to the power supply device whenever the power supply device is connected to the output terminal of the battery charger. This battery charger has periodic signal producing means for supplying a periodically varying periodic signal to the output terminal by charging and discharging a capacitor connected to the output terminal, and detecting means for checking whether the power supply device is connected to the battery charger or not by checking through a filter whether the periodic signal is present at the output terminal or not. Thus, although the battery charger has no mechanical switch, it can detect the presence of the power supply device.
摘要:
A power supply unit has an output transistor and two resistors connected in series between a power source line and a ground potential point. The output electrode of the output transistor is connected to an output terminal. Between the output terminal and the ground potential point, a capacitor is connected. When a starting switch is turned on, the output transistor starts conducting. A current limiting circuit is also provided to limit the current that flows through the output transistor when it starts conducting. The current limiting circuit bypasses part of the output current of a comparator to the ground potential point.
摘要:
An apparatus for stopping the transverse swing and skew motions of a hoisted cargo according to the present invention comprises a pair of movable frames (15) which are disposed on a transversely moving trolley (1) along left and right sides of the trolley (1) and which are movable with respect to the trolley (1) in a direction of movement of the trolley, two sets of guide sheaves (13, 14) for hoisting ropes fixedly arranged on each of said pair of movable frames (15) with a certain distance between the sets, and a pair of drive means (17) disposed on said trolley (1) for moving said pair of moving frames (15) independently with respect to said trolley (15), wherein the swing or skew motion, or a combination of these motions, of the cargo hoisted by the trolley (1) is reduced by the operation of the movable frames (15) (guide sheaves) disposed the opposite sides of the trolley (1). The apparatus can be made simpler, the control becomes easier and the arrangement of the apparatus enjoys a larger degree of freedom.
摘要:
In a structure for attaching a heat sink to a semiconductor device in which a frame is encapsulated in a resin mold, a pin is formed integrally with the semiconductor device, and a hole engageable with the pin is formed integrally with the heat sink.
摘要:
A pipe joint for joining two pipes end to end comprises a hollow cylindrical spigot portion having an annular projection on the outer periphery of a base end thereof, a hollow cylindrical socket portion having an inside diameter approximately equal to the outside diameter of the spigot portion and formed with two opposed apertures in its peripheral wall close to a forward end thereof and with a stepped part on the inner surface of the peripheral wall for the projection to come into contact with, the stepped part being closer to a base end of the socket portion than the apertures, and a stopper having a pair of circular-arc resilient legs fittable into the respective apertures from outside to project inward and each having a slanting inner surface, the legs being opposed to each other for the inwardly curved surfaces thereof to face each other. The projection is fixedly held between the stepped part and the legs by inserting the stopper into the apertures with the slanting surfaces facing toward the insertion side of the spigot portion and inserting the spigot portion into the socket portion until the projection moves past the legs. The spigot and socket portions are provided at the joint ends of the two respective pipes to be joined.
摘要:
The present invention provides an alkaline dry cell which has a negative electrode comprising zinc alloy powders free of mercury as a negative electrode active material and provided in the center portion of the cell, a positive electrode provided around the outer surface of the negative electrode with a separator provided therebetween and a current collector comprising copper or a copper alloy and inserted in the negative electrode and which is inhibited from generation of hydrogen gas and from leakage of liquid. This alkaline dry cell is characterized in that the surface of the current collector is plated with a metal of high hydrogen overvoltage such as tin, lead, copper, zinc or an alloy of two or more of these metals.
摘要:
An erectable container having a polygonal bottom plate is formed in the center of a foldable board member and side plates which are integrally provided extending from each edge of the bottom plate, at least one of the side plates being made in a pentagonal form. The pentagonal side plate is provided with two fold lines connecting between the vertexes at each end of the edge corresponding to the bottom plate and the vertex which is not adjacent thereto. An adhesive tab is provided on either one of each pair of lateral edges of the side plates which are adjacent to each other when the sides of the bottom plate are folded, so that, when each of the side plates is erected, the adhesive tab may join the side plates.