摘要
文中所述交流电掉电检测方法是通过检测交流电的相位来判断是否掉电,该方法能克服原有交流电掉电检测方法对宽范围交流电压检测能力的不足,准确获得交流电掉电信息,并及时发出报警信号。
In this paper,an alternating current power failure detection method is introduced by detecting alternating current phase to determine whether the power is off.This method can overcome the deficiencies of the original AC power failure detection method for a wide range of AC voltage.Accurate information about the AC power failure is obtained and alarm signals are send out in time.
出处
《通信电源技术》
2016年第1期153-154,共2页
Telecom Power Technology
关键词
交流电
掉电检测
报警电路
alternating current
power off detection
alarm circuit
