Abstract: A sliding variable resistor includes a sliding base, a first supporting pole, two buffering members, a substrate, a casing assembly, an anchoring plate, a driving member, a driven member, a belt, and a belt guard. The sliding base includes two first through hole and at least one variable resistor sheet. The first supporting pole is inserted into the two first through hole. The first supporting pole has its two ends abut against the first buffering seats, respectively. The substrate is engaged with the two buffering members. The two buffering members are arranged in the casing assembly. The anchoring plate is fixedly arranged on the casing assembly. The belt is engaged with the driving member and the driven member, respectively. The belt guard is fastened to the sliding base, and is engaged with the belt. As such, the sliding base, while sliding, can have an improved smoothness.

Abstract: A sliding variable resistor includes a sliding base, a first supporting pole, two buffering members, a substrate, a casing assembly, an anchoring plate, a driving member, a driven member, a belt, and a belt guard. The sliding base includes two first through hole and at least one variable resistor sheet. The first supporting pole is inserted into the two first through hole. The first supporting pole has its two ends abut against the first buffering seats, respectively. The substrate is engaged with the two buffering members. The two buffering members are arranged in the casing assembly. The anchoring plate is fixedly arranged on the casing assembly. The belt is engaged with the driving member and the driven member, respectively. The belt guard is fastened to the sliding base, and is engaged with the belt. As such, the sliding base, while sliding, can have an improved smoothness.

Abstract: An encoder with a tri-color LED includes an insulating base, five terminals, a conductive elastic piece, a tri-color LED assembly, an encoder substrate assembly, a conductive wiper assembly, and an insulated light shaft. The five terminals and the insulating base are formed integrally. The conductive elastic piece is received in a receiving chamber of the insulating base. The tri-color LED assembly is disposed in the receiving chamber. The encoder substrate assembly covers on both the conductive elastic piece and the tri-color LED assembly. The conductive wiper assembly is received in the encoder substrate assembly. The insulated light shaft passes through a through hole of the conductive wiper assembly and a through hole of the encoder substrate assembly. Thereby, through voltage variation of an independent tri-color LED loop, color mixing can be controlled, and that to combine the same with the encoder a function of lighting and marking can be achieved.

Abstract: An encoder with a tri-color LED includes an insulating base, five terminals, a conductive elastic piece, a tri-color LED assembly, an encoder substrate assembly, a conductive wiper assembly, and an insulated light shaft. The five terminals and the insulating base are formed integrally. The conductive elastic piece is received in a receiving chamber of the insulating base. The tri-color LED assembly is disposed in the receiving chamber. The encoder substrate assembly covers on both the conductive elastic piece and the tri-color LED assembly. The conductive wiper assembly is received in the encoder substrate assembly. The insulated light shaft passes through a through hole of the conductive wiper assembly and a through hole of the encoder substrate assembly. Thereby, through voltage variation of an independent tri-color LED loop, color mixing can be controlled, and that to combine the same with the encoder a function of lighting and marking can be achieved.

Abstract: A tri-color LED module structure includes an insulating base, four terminals, a tri-color LED chip, and a cover. The insulating base has a receiving recess. The four terminals do not contact with one another, and each of them includes an inserting portion and a touching portion which are connected with each other. The touching portion is received in the receiving recess; while the inserting portion extends out of the insulating base. The four terminals and the insulating base are an integrally formed structure. The tri-color LED chip is disposed in the receiving recess of the insulating base, with four pins of the tri-color LED chip in touch with the touching portions of the four terminals, respectively. Further, the cover covers on the receiving chamber of the insulating base. Thereby, an independent red-green-blue tri-color LED loop can be constituted, making color mixing become possible by controlling various voltage combination.

Abstract: A humidity sensor includes a substrate, at least two elongated electrodes formed respectively on the substrate where each of the elongated electrodes has a first end and a second end, at least a pair of comb-like electrodes each contacting with the first end of the elongated electrode, and a humidity sensitive film which contains hydrophilic ionic polymer and is formed respectively on the at least a pair of comb-like electrodes but not on the second ends of the elongated electrodes. In addition, the present invention further comprises a method for making such a humidity sensor.

Abstract: A dewing sensor and a method for making the dewing sensor. The dewing sensor includes a substrate having at least two electrodes, at least two comb electrodes, and a detecting layer, wherein the comb electrodes contact the two electrodes on the substrate, and the detecting layer includes a derivative of cellulose formed on the comb electrodes.