The feature of the telephone ringing circuit and its fault analysis
Author(s): LIU Boli, LIU Caixia, LIANG Jingkun
Pages: 25-27
Year: 2001 Issue: 2
Journal: JOURNAL OF SHIJIAZHUANG VOCATIONAL TECHNOLOGY INSTITUTE
Keyword: 振铃电路; 输入电路; 双音调振荡电路; 输出电路;
Abstract: 从电话机振铃电路的组成出发,概述了外接桥式、内接桥式振铃集成电路的特点,并结合其共性进行了故障分析,给出了铃不响,不能拨号,也无送、受话,不振铃、铃声失真等常见故障的维修方法.
Pages: 25-27
Year: 2001 Issue: 2
Journal: JOURNAL OF SHIJIAZHUANG VOCATIONAL TECHNOLOGY INSTITUTE
Keyword: 振铃电路; 输入电路; 双音调振荡电路; 输出电路;
Abstract: 从电话机振铃电路的组成出发,概述了外接桥式、内接桥式振铃集成电路的特点,并结合其共性进行了故障分析,给出了铃不响,不能拨号,也无送、受话,不振铃、铃声失真等常见故障的维修方法.
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