Thin-film resistor resistance fine-tuning device

Abstract

The invention relates to the technical field of thin-film resistors, particularly relates to a resistance fine adjustment device for a thin-film resistor, and aims to improve the resistance adjustmentconvenience of the device, improve use adaptability of the device, improve work adaptability of the device and reduce the use limitation. The device comprises a protection box, a thin-film resistor,a fixed connecting arm, a fixed plug, a movable connecting arm and a movable plug, wherein the thin-film resistor is installed at the top of the cavity wall of the protection box, the top end of the movable connecting arm is electrically connected with the left side of the bottom end of the thin-film resistor, and a top end of the movable plug is connected with a bottom end of the movable connecting arm; a bearing, a lead screw, a mounting piece, a thread sleeve, a connecting piece, a first positioning piece and a positioning slide rail are further included, the bearing is installed in a shafthole of the protection box, the lead screw is rotatably connected with the protection box through the bearing, a bottom end of the connecting piece is installed at a top end of the installing piece,a top end of the connecting piece is slidably connected with a bottom end of the thin-film resistor, and a top end of the first positioning piece is installed at a bottom end of the installing piece;top ends of the movable connecting arms are connected with bottom ends of positioning sliding rails.

Description

technical field [0001] The invention relates to the technical field of thin film resistors, in particular to a thin film resistor resistance trimming device. Background technique [0002] As we all know, the thin-film resistor resistance fine-tuning device is an auxiliary device used to control the current in the circuit, and it has been widely used in the field of thin-film resistors; an existing thin-film resistor resistance fine-tuning device includes Protective box, thin film resistor, fixed connecting arm, fixed plug, movable connecting arm and movable plug, the thin film resistor is installed on the top of the cavity wall of the protective box, the top of the fixed connecting arm is electrically connected with the right side of the bottom end of the thin film resistor, fixed The top of the plug is installed at the bottom of the fixed connecting arm, the top of the moving connecting arm is installed and electrically connected to the left side of the bottom of the film r...

AI Technical Summary

Problems solved by technology

[0002] As we all know, the thin-film resistor resistance fine-tuning device is an auxiliary device used to control the magnitude of the current in the circuit, and it has been widely used in the field of thin-film resistors; an existing thin-film resistor resistance fine-tuning device includes Protective box, thin film resistor, fixed connecting arm, fixed plug, movable connecting arm and movable plug, the thin film resistor is installed on the top of the cavity wall of the protective box, the top of the fixed connecting arm is electrically connected with the right side of the bottom end of the thin film resistor, fixed The top of the plug is installed at the bottom of the fixed connecting arm, the top of the moving connecting arm is installed and electrically connected to the left side of the bottom of the film resistor, the top of the moving plug is connected to the bottom of the moving connecting arm, and the fixed and moving plugs are located at the outer end of the protection box; In the use of an existing thin-film resistor resistance fine-tuning device, it was found that the resistance value of the existing resistor device was fixed and could not be adjusted, resulting in high installation limitations, and the existing device was only suitable for installation and use at designated locations, with poor adaptability. Highly limited use

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