The National Instruments PCI-4472 and PXI-4472 are 8-channel dynamic signal acquisition devices for making high-accuracy audio-frequency measurements. The PCI-4474 is a similar 4-channel board. The vibration-optimized NI PXI-4472B offers a

34970A多通道数据采集，可采集直流电流，直流电压，温度，交流电压，交流电流-34970A multi-channel data acquisition, acquisition of DC current, DC voltage, temperature, AC voltage, AC current

本文阐述了PWM整流器发展过程、发展现状以及发展方向，分析了PWM整流器的基本工作原理及其分类，然后采用LabVIEW-Multisim协同仿真对AC-DC变换进行完整系统的闭环仿真，结合脉冲宽度调制(PWM)信号的控制策略对整流器进行控制，最后对仿真结果进行分析。-This paper describes the development of PWM rectifier produced and present domestic and foreign research hot topic,