Polarization position angle swings of ～ 180° observed in extragalacticradio sources are a regular behavior of variab......

针对传统交-交变频电路功率器件多、控制复杂和功率因数低等缺点,在脉冲阻塞式交-交变频控制原理基础上,依据输出电压的平均值跟随......