keying waveform meaning in Chinese
键控波形
Examples
- The requirements are the following : ( 1 ) input voltage : 220 vac ; ( 2 ) output voltage : 48 vdc ; ( 3 ) output current : 20 adc ; ( 4 ) switching frequency : 80khz ; ( 5 ) operated frequency of apfc : 100khz the simulated software pspice 7 . 1 realizes simulation research of the main circuit , and the simulated result of key waveforms in the main circuit is introduced
设计指标为：输入电压为交流220v ，频率为50hz ，输出电压和电流为48v ， 20a ，功率因数校正电路的工作频率为100khz ，直流变换器电路的工作频率为80khz 。利用仿真软件pspice7 . 1对主电路进行了仿真研究，并介绍了主电路的几个关键波形的仿真结果。 - Abstract : on the basis of the practical design experiences and relatedreference literatures , the basic principles , development process , key waveforms , performance features and application points of five new pwm constant current feedback control modes for inverter welders are illustrated and reviewed in the light of their schematic drawings in details
文摘:根据实际设计工作经验及有关参考文献，比较详细地依据基本工作原理图说明了逆变焊机用的5种新型pwm恒流调节反馈控制模式的基本工作原理、发展过程、关键波形、性能特点及应用要点[ 1 3 ] 。