中和阴极灯丝电源的正极接地，使得整个中和阴极灯丝处于负电位；
Anode of power supply for neutralization cathode filament is connected to ground, so that filament is at negative potential.
通过实验测试，设计的灯丝电源在兼顾小型化的同时，满载效率达到92%。
Experimental test shows that the full load efficiency of the filament power supply can be up to 92% for the designed and manufactured compact circuit.
介绍了一种新型的交流灯丝电源的基表原理，描述了其实现方法，最后给出了实验波形。
The principle of a new AC filament power and its implementation method are introduced in the paper.
介绍了一种采用自适应技术的开关型稳压电源，对电视发射机大功率发射管的冷态灯丝平滑上电压，有效提高了发射管的使用寿命。
The switch mode regulated power supply using self - adjusting technique is introduced. In TV transmitter, it is used to the large power transmit-ting tubes with variable voltage for cold filament.
就电源而言，灯丝用交、直流供电均可，但是版本二中的3a5除外，它必须用直流供电。
About the power supply, the filaments can be powered by AC or DC except that the 3a5 (version 2 of the amplifier) requires a DC filament supply.
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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