交流电源调压器
AC power source voltage regulator
可调电压源
variable voltage source
adjustable voltage source
连续可调电压源
continuous variable voltage source
零伏可调稳压电源
0V adjustable regulated power supply
负载比[电压]调压器
load-ratio control transformer
标准电源电压不足时的印刷电路板
normal source undervoltage pc card
标准电源电压监控板
normal source voltage monitoring card