市电频率Hum,主要原因包括灯丝线路走线导致的不平衡;供给灯丝的电源变压器(缺陷)导致电源杂波耦合进入信号通道,等等。
Line frequency hum, primarily induced by imbalance in the filament circuit wiring, the transformer used to power the filament, coupling into the signal leads, etc.
市电频率Hum,主要原因包括灯丝线路走线导致的不平衡;供给灯丝的电源变压器(缺陷)导致电源杂波耦合进入信号通道,等等。
Line frequency hum, primarily induced by imbalance in the filament circuit wiring, the transformer used to power the filament, coupling into the signal leads, etc.
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