摘要
介绍有线电视集中供电的计算方法 ,决定供电器所能带的放大器级数的是放大器功率的大小和放大器级间电缆回路电阻的大小 ,集中供电器供电连接方式不同 ,相同输出功率的集中供电器所带的放大器级数也不相同。施工时采用正确的供电连接方法 ,才能确保选用的供电器发挥较高的效率。
Introduces the calculation method that CATV concentrates the power supply. The size for enlarger series with the electric providing appliances is limited by the power of enlarger and the cable back track electric resistance. Because of different connection ways for the concentration electric providing appliances, the sizes of the enlarger with the same output power are not same. Adopting the proper way to connect under construction, can insure the chosen electric providing appliances to develop the higher efficiency.
出处
《中国有线电视》
北大核心
2003年第15期34-36,共3页
China Digital Cable TV
关键词
有线电视
集中供电
放大器
供电器
回路电阻
concentrate
power supply appliances
enlarger
back track resistance
