本文介绍一种新型的直流开关电源，该电源是一种直流电压输入，三种直流电压输出，并能够达到相当高的效率。
A new type of DC switch power which is possessed a DC voltage input and three DC voltage output, and is able to reach higher efficiency has been introduced in this paper.
可编程控制器在高于24V的直流电压等级控制回路中应用时需解决输入模块的电压变换和谐波干扰等问题。
In the application of above 24V fort current voltage grade control circuit, Voltage Alternating and resonant wave interference of input model for Programmable Logic Controllers must be resolved.
文章对一种只检测交流输入电压而不需要检测输出直流电压的简化单相pfc变换器进行了理论分析和研究。
It theoretically analyzed and studied a simple DC voltage sensorless single APFC converter by detecting an AC line voltage in the paper.
该方案能在80 ~ 265V宽输入电压范围内得到稳定直流电压输出，具有效率高、总谐波畸变率低、功率因数接近为1等特点。
It can achieve a fixed output of DC voltage in the universal input range of ac 80 ~ 265 V. It owns the advantages of high efficiency, low total harmonic distortion, PF near to 1.
此外，7461A能2通道电压测量和1个通道电流测量的直流电压，BC H码输入，有助于提高测量系统的性能。
Furthermore, the 7461a is capable of 2-channel voltage measurement and 1-channel current measurement with the DCV-Bch input, contributing to higher measurement system performance.
此外，7461A能2通道电压测量和1个通道电流测量的直流电压，BC H码输入，有助于提高测量系统的性能。
Furthermore, the 7461a is capable of 2-channel voltage measurement and 1-channel current measurement with the DCV-Bch input, contributing to higher measurement system performance.
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