摘要:
The present invention relates to an electro-luminescent material, which is characterized in that it comprises a liquid crystalline mixture containing at least one liquid crystalline compound with a negative dielectric anisotropy, to an electro-luminescent device containing such an electro-luminescent material as well as to a method of preparation such a device.
摘要:
The invention relates to a nematic liquid-crystal composition especially for active matrix displays with high voltage holding ratio, good low temperature stability and without reversed domains.
摘要:
A bypass switch includes a pair of fixed conductors connected in parallel with a battery cell, a movable conductor disposed in a vertical direction with respect to the pair of fixed conductors, and a thermally actuated device. In the thermally actuated device, a single diode that generates heat by being energized, a metal plate, and solder are stacked and sandwiched between a first and second heat-insulating spacers. When the battery cell malfunctions, the diode is energized and generates heat that is transferred to the solder through the metal plate, causing the solder to melt, and thereby the thermally actuated device to be displaced. Displacement of the thermally actuated device causes the movable conductor to be displaced in the vertical direction with respect to the fixed conductors and inserted between the fixed conductors, electrically connecting the fixed conductors and forming a bypass circuit to short-circuit the malfunctioned battery cell.
摘要:
Provided is an optical connector plug of which housing is provided with: a first member that has at least a lower surface section that covers the lower side of a providing space in which an optical fiber and a ferrule are provided, a half of a back surface section from which the optical fiber is led out, and a half of a front surface section from which the ferrule is led out, and is composite-molded out of a thermoplastic resin; and a second member that has at least an upper surface section that covers the upper side of the providing space, the remaining half of the back surface section and the remaining half of the front surface section, and is composite-molded out of a thermoplastic resin into the same shape as the first member.
摘要:
A vacuum switch includes a pair of windmill-shaped electrodes within a vacuum tube and including windmill portions and contact portions. Each of the windmill-shaped electrodes is arranged such that a component of a magnetic flux parallel to a contact surface and serving as an arc driving force with respect to a range of 0.5 mm from the contacting surface contacting the contacting portion of a leg portion of an arc has a magnetic flux density equal to or larger than 0.01 tesla with respect to an electric current of 1 kA, at any point on the contacting surface. The ratio of an inner diameter Di of the contact portion to an outer diameter D of the windmill-shaped electrodes is equal to or greater than 0.4, the difference in thickness between the windmill portions and the contact portions is equal to or less than 5 mm, and each of the windmill-shaped electrodes is connected to one of the pair of electrode rods, and a ratio of a diameter d of the connection portion of the electrode rod to an inner diameter Di of the contacting portion is equal to or less than 0.6. The windmill-shaped electrodes may be a Cu—Cr material including 20-60 weight % of Cr.