An automatic control device for a Hall current laser resistance trimming machine

Abstract

The invention relates to the field of laser resistance trimming machines, and discloses an automatic control device for a Hall current laser resistance trimming machine, which includes an operating table, support legs and an operating screen. A discharge port is opened in the middle of the upper side of the operating table. A sleeve rod is fixedly installed on the top of the discharge port, a hole is opened at one end of the sleeve rod, and a rotating rod is movably socketed inside the hole. The automatic control equipment of this kind of Hall current laser resistance adjustment machine has an air outlet through the upper middle part of the other side of the console to discharge the toxic gas generated by the internal laser resistance adjustment. The middle part of the air outlet is fixed with a support rod. A motor is fixedly installed in the middle of one side, and a fan blade is movably socketed in the middle part of the top of the motor. The motor is used to drive the fan blade to rotate and discharge internal toxic gas. There is an active carbon plate in the movable socket inside the groove, which is slightly ventilated so that the poisonous gas can stay inside for a longer time to increase the adsorption effect.

Description

technical field [0001] The invention relates to the field of laser resistance adjustment machines, in particular to an automatic control device for a Hall current laser resistance adjustment machine. Background technique [0002] The principle of laser resistance adjustment is to use a very thin laser beam to hit the thick and thin film resistors, and realize the cutting of thick and thin film circuits by vaporizing and evaporating the resistors. Change the geometric shape of the thick and thin film resistors to change the resistance value of the resistor. As the laser cutting process proceeds, the real-time measurement circuit monitors the change of the resistance value of the thick and thin film resistors in real time, and the resistance of the thick and thin film resistors is constantly approaching the target resistance value. , when the thick and thin film resistance reaches the target resistance value, the laser beam is turned off, that is, the laser resistance adjustme...

AI Technical Summary

Problems solved by technology

[0003] However, during the long-term use of the traditional laser resistor trimming machine, because the laser beam hits the thick and thin film resistors, the resistors are vaporized and evaporated to realize the cutting of the thick and thin film circuits, and the gas produced is toxic and harmful. It will inhale a large amount of gas. The original laser resistance adjustment machine does not have a closed space, nor does it have a device for absorbing and discharging poisonous gas. The toxic and harmful gas produced is directly discharged into the air, which endangers the health of workers and pollutes the environment.

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