30 December 1976 Laser Application To Resistor Trimming
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The adjustment of film resistors to specified value by selective removal of film material with a programmed laser beam has been practiced since 1966. Evolution of systems to perform not only passive resistor trim but adjustment of operating circuit parameters has led to sophisticated multipurpose machines. This paper describes such a trimmer and correlates the utilization of its various configurations with trim requirements of several types of product. Precautions and suggestions on adjustment of system parameters are discussed to optimize results with respect to accuracy and stability of trimmed resistors.
© (1976) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Gilbert C. Waite, Gilbert C. Waite, "Laser Application To Resistor Trimming", Proc. SPIE 0086, Industrial Applications of High Power Laser Technology, (30 December 1976); doi: 10.1117/12.954966; https://doi.org/10.1117/12.954966

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