摘要
利用电感、电容、阻抗大小及性能 ,使电源隔断和通过 ,既传送电源又不干扰高频信号的传输 ,从而使 5 0Hz交流电通过同轴电缆延伸 ,继续向下一级放大器提供电源。根据电阻、电压、电耗计算同轴供电距离及放大器供电级联数。
Utilize inductance, electric capacity, impedance size and performance , make the power cut off and pass、in this way it conveys Power and transmission and does not interfering the high frequency signal .It makes 50Hz alternating current extend through coaxial cable , continue the first class amplifier offers the power downwards. Consume the size according to the resistance, voltage, electricity Use formulae Calculate coaxial to supply power distance, and amplifier supply power grades of antithetical couplet progression.
出处
《中国有线电视》
北大核心
2003年第3期65-66,共2页
China Digital Cable TV
关键词
分配器
馈电传输
同轴供电
距离计算
有线电视
放大器
distributor
present telex fail
supply power coaxially
the distance calculating