Laser Trimming Machine The laser trimmer mainly uses a short pulse laser to scan and trim the resistor, the laser vaporizes the resistive film on the ceramic substrate and cuts a certain depth of incision on the resistor, changing the length and cross-sectional area of the resistor, thus changing the resistance value of the resistor. How does laser trimming work? Laser trimming involves using a focused laser beam to precisely cut or modify materials, typically thin films or electronic components, by removing unwanted portions. The process is controlled with high accuracy, allowing for fine adjustments to be made without physically touching the material. Itâ??s commonly used in applications like trimming resistors, capacitors, and other microelectronic components, where precision is crucial. Appliance Automotive Electronics. Electric Vehicles Fuel Tank Measurement Sensor Technology: Temperature Sensors Temperature Sensors Parking distance sensors Pressure sensors Industrial and Power Electronics: Current Controllers Current Controllers Hybrid circuits Aerospace. Satellite Systems Crystal Oscillators Automation Measurement and Control Technology Medical Technology, Medical Sensors Linear and circular potentiometers