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ＣＡＴＶ系统干线放大器常见故障及排除□张南洋（福建省平和县广播电视局３６３７００）１．九州牌ＪＺ３０ＴＡ—１型干线放大器常见故障每个频道都有横条干扰，测量放大器的电压才２０Ｖ。而放大器的标称电压是２４Ｖ，原因是国产的ＣＷ７８２４Ｃ三端稳压块性能不良，...
Common faults and elimination of CATV system trunk amplifier □ Zhang Nanyang (Fujian Pinghe County Bureau of Radio and Television 363700) 1. Kyushu brand JZ30TA-1-type trunk amplifier common faults Each channel has horizontal interference, the voltage measurement amplifier only 20V. The nominal voltage of the amplifier is 24V, because the domestic CW7824C three-terminal regulator block performance, ...