Using the optical chopper to modulate the detected light to make it related to the reference squarewave signal is a common method of locking phase detection of weak signals.
其中利用光学斩光器对被测光进行调制使其与方波参考信号相关是对微弱光信号进行锁相检测的一种常用方法。
2
With the shift-phase modulated multiple chopper circuit, the equivalent switch frequency can be improved, so it can be used in large power occasion.
采用移相调制的多重斩波电路，可以提高等效开关频率，因此可应用在中大功率场合。
3
The accuracy and practicability of the simulation program are verified by simulation on chopper, three-phase all-controlled bridge rectifier and three-phase half-controlled bridge rectifier.