58results about "Current collector arrangements" patented technology

The invention provides a precision shunt resistor and its producing method, and it is composed of a resistor body and a bus bar made of red copper plate, and it has the character: it adopts a manganin plate with a temperature coefficient less than 20ppm as the resistor body and there is a transition manganin-red copper alloy band with temperature coefficient less than 50ppm, formed by electronic beam welding and fusion, between the resistor and the bus bar. There are installation holes and a voltage end. It has the advantages of low temperature coefficient, high reliability, heavy current rating, small bulk, convenient use, etc. Its producing method has a few production procedures, and high production efficiency, convenient for automatic production and at the same time can effectively assure it has better thermal stability and very high reliability.

An electrical contactor or wiper that uses an elastomer near the tip to reduce flexing and improve electrical signal accuracy. The contactor includes an elongated beam having a U-shaped end. Several carbon fibers form a bundle attached to the beam. The fibers have ends and tips. The ends are compressively held inside the U-shaped end and the tips emanate from the U-shaped end. An elastomer is disposed over the carbon fibers where they emanate from the U-shaped end. The elastomer reduces flexing of the carbon fibers. The elastomer is located between the beam and adjacent to the tips with the tips being exposed. A laser is used to trim the carbon fibers and elastomer to form the tips.

An electrical contact device, configured for electrical signals to be transmitted therethrough and for movable contact with an electrically conductive track, includes a composite carbon fiber material including plural carbon fiber elements aligned in substantially the same direction. At least a portion of the plural carbon fiber elements is bonded together in a semi-conductive (low-resistance) synthetic resin compound.

A binder resin for sliding resistors contains an acetylene-terminated polyamic acid oligomer represented by the following general formula (I):

wherein n is an integer of zero or more.

Provided are: a chip resistor whose resistance value can be adjusted with high accuracy while maintaining high sulfurization resistance of electrodes of the chip resistor even in the case where the resistance value of the chip resistor is low; and a method for manufacturing this chip resistor. This chip resistor (1) includes: an insulating film that covers a resistor substance (4) formed so as to make contact with both of a pair of electrodes (3, 3) formed on an upper surface (2A) of an insulating substrate (2). Each of the pair of electrodes (3, 3) includes: (1) a main electrode layer (3B) that contains silver as a main metal component and 10 weight % or more of palladium as another metal component, and an auxiliary electrode layer (3A) that is lower in specific resistance than the main electrode layer (3B); (2) a laminate part where the auxiliary electrode layer (3A) and the main electrode layer (3B) are sequentially laminated in this order on a single surface of the insulating substrate (2); and (3) an exposed part (3A1) of the auxiliary electrode layer (3A) where a part of the auxiliary electrode layer (3A) is not covered with the main electrode layer (3B) on a far side from the resistor substance (4), and parts (3B1) that extend from a near side to the far side with respect to the resistor substance (4).

The invention discloses a double-sliding-piece slide rheostat for electrical experiments. The double-sliding-piece slide rheostat comprises a porcelain cylinder, wherein both sides of the porcelain cylinder are bonded with brackets; the surface of the porcelain cylinder is surrounded by a resistance wire; the two ends of the resistance wire are fixedly connected with separation blades; the surfaces of the separation blades are welded with lower binding posts; the lower binding posts are connected with lower terminal post caps through threads; the tops of the two brackets are separately provided with threaded holes; threaded holes are connected with metal rods through threads; the metal rods are fixedly connected with limiting pieces; the ends, close to the limiting pieces, of the metal rods are connected with threaded pipes through threads; the metal rods are in sleeve connection with slide blocks; the surfaces of the slide blocks are provided with through holes; circular rings are arranged in and bonded with the through holes; two sides of each circular ring are fixedly connected with a first sliding piece and a second sliding piece respectively; the second sliding pieces are fixedly connected with threaded rods, and the threaded rods penetrate the first sliding pieces; the tail ends of the threaded rods are connected with nuts through threads; and the surfaces of the first sliding pieces are provided with bumps. The double-sliding-piece slide rheostat of the invention is worth promotion.

A chip resistor includes a resistor board, a first electrode, a second electrode and an insulating layer. The second electrode is offset from the first electrode in a lateral direction perpendicular to the thickness direction of the resistor board. The obverse surface of the resistor board includes a first region in contact with the first electrode, a second region in contact with the second electrode and an intermediate region in contact with the insulating layer. The intermediate region is disposed between the first region and the second region in the lateral direction. The first electrode includes a first underlying layer and a first plating layer. The first underlying layer is disposed between the first plating layer and the insulating layer in the thickness direction of the resistor board.

A rotatable variable resistor with a clicking mechanism includes a rotary unit provided with a rotor and a wiper, and a fixed unit provided with a cover, a resistor substrate, and external terminals. The wiper has an arm segment, a clicking projection and a non-clicking projection. The undersurface of the cover is provided with a clicking depression. The distance from the center of rotation of the rotary unit to the top of the clicking projection is different from the distance from the center of rotation to the top of the non-clicking projection. The non-clicking projection may have a flat top portion with a width extending in one direction that is greater than that of the clicking depression such that a sliding track of the top of the clicking projection is located within a sliding track of the non-clicking projection in the radius direction. The clicking depression may alternatively be an aperture.