摘要：Multisim is a Windows-based simulation tool launched by National Instruments Inc., which is suitable for the design of analog/digital circuit boards at board level. It includes the graphic input of circuit schematic diagram and the input of circuit hardware description language. It has a rich simulation and analysis ability. Compared with the traditional manual calculation and design circuit, it can be designed and simulated more simply and quickly through Multisim simulation software. Through further analysis and simulation of the improved Sallen-Key filter network of different orders, the Sallen-Key active filter network is designed as the filter forming circuit in the spectrometer amplifier. Through the observation and comparison of the output waveform, the characteristics of the filter forming circuit can be clearly understood and mastered, which provides a reference for the virtual simulation experiment teaching nuclear power electronics.
