CN2229738Y - 截铃装置 - Google Patents

截铃装置 Download PDF

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Publication number
CN2229738Y
CN2229738Y CN 95201283 CN95201283U CN2229738Y CN 2229738 Y CN2229738 Y CN 2229738Y CN 95201283 CN95201283 CN 95201283 CN 95201283 U CN95201283 U CN 95201283U CN 2229738 Y CN2229738 Y CN 2229738Y
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comparator
getting
ringing signal
triode
utility
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刘海先
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Abstract

一种电话交换机用户电路装置中的截铃装置，其特征是在比较器的输出端接有滤波电路，使得在比较器的输出端能获得振铃信号，也可在三极管基极仍能获得截铃信号。

Description

截铃装置
本实用新型涉及一种电话交换机用户电路装置中的截铃装置。
目前，在已有技术中在检测电路与比较器之间联通一电容和三极管作为滤波电路，使得振铃信号被过滤掉，不能使振铃工作状态被比较器得到并被显示装置显示。
本实用新型的目的在于提供一种能获得振铃信号和截铃信号，又不影响原有的摘挂机和脉冲检测功能的截铃装置，改进了已有技术的缺陷。
本实用新型有目的是这样实现的：一种电话交换机用户电路装置中的截铃装置，由检测电路、比较器、电阻等构成，其特征是：三极管的基极与地之间联接电容；这个三极管的基极还通过电阻联接比较器的输出端。
采用本实用新型提供的截铃装置，可使交换机的振铃信号被获得并被显示装置显示出来，同时不影响摘挂机检测和脉冲检测的性能，也不影响截铃性能。
一下面结合附图对本实用新型作进一步叙述，
图1是已有技术的电路原理图，
图2是本实用新型的电路原理图，
参照图1、图2，将已有技术中的三极管4，电容3构成过滤振铃信号滤波电路去掉，在三极管5的基极与地之间联接电容5使电阻8和电容6构成滤波电路，实际上是将原来的振铃滤波电路由比较器的负相输入端移至比较器2的输出端，比较器的负相输入端联通检测电路端1。当有振铃信号时，振铃信号经过比较器到达比较器的输出端，经过电阻8，电容6和三极管5使得比较器2的输出端能获得振铃信号，同时在三极管7的基极还能获得截铃信号。振铃信号极易被交换机显示装置显示出来。

Claims (1)

1、一种电话交换机用户电路装置中的截铃装置，由检测电路、比较器、电阻等构成，其特征是：三极管(5)的基极与地之间联接一个电容(6)，三极管(5)的基极还通过电阻(8)联接比较器(2)的输出端。
CN 95201283 1995-01-25 1995-01-25 截铃装置 Expired - Fee Related CN2229738Y (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 95201283 CN2229738Y (zh) 1995-01-25 1995-01-25 截铃装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 95201283 CN2229738Y (zh) 1995-01-25 1995-01-25 截铃装置

Publications (1)

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CN2229738Y true CN2229738Y (zh) 1996-06-19

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Family Applications (1)

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CN 95201283 Expired - Fee Related CN2229738Y (zh) 1995-01-25 1995-01-25 截铃装置

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CN (1) CN2229738Y (zh)

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Free format text: CORRECT: PATENTEE; FROM: LIU HAIXIAN TO: BEIJING HAIKUO ELECTRONIC CO., LTD

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Address after: 100085, room 509, room 5, Fu Lou building, No. 11, Pioneer Road, Beijing, Haidian District

Patentee after: Beijing haikuo electronic Limited by Share Ltd

Address before: 100038 No. 121, No. 1, dormitory, railway ministry, Haidian District, Beijing

Patentee before: Liu Haixian

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