JPS6190348U - - Google Patents
Info
- Publication number
- JPS6190348U JPS6190348U JP17638684U JP17638684U JPS6190348U JP S6190348 U JPS6190348 U JP S6190348U JP 17638684 U JP17638684 U JP 17638684U JP 17638684 U JP17638684 U JP 17638684U JP S6190348 U JPS6190348 U JP S6190348U
- Authority
- JP
- Japan
- Prior art keywords
- calling signal
- calling
- input terminal
- capacitor
- whose
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000003990 capacitor Substances 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 238000009499 grossing Methods 0.000 claims description 2
- 230000010355 oscillation Effects 0.000 claims description 2
- 239000004065 semiconductor Substances 0.000 claims 2
- 230000005236 sound signal Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Description
第１図はこの考案の呼出信号検出回路の１実施
例のブロツク図、第２図は従来の呼出信号検出回
路のブロツク図、第３図はカナダ逓信省規格の適
否判定回路のブロツク図である。
Ｃ１…カツプリング用のコンデンサ、Ｃ２…平
滑用のコンデンサ、Ｄ１…ツエナダイオード、Ｄ
２…ダイオード、Ｒ１…抵抗、Ｔ，Ｒ…平衡入力
端子、２…ブザー発振回路。
Fig. 1 is a block diagram of one embodiment of the paging signal detection circuit of this invention, Fig. 2 is a block diagram of a conventional paging signal detection circuit, and Fig. 3 is a block diagram of a suitability judgment circuit according to the standards of the Canadian Ministry of Communications. . C1...Coupling capacitor, C2...Smoothing capacitor, D1...Zena diode, D
2...Diode, R1...Resistor, T, R...Balanced input terminal, 2...Buzzer oscillation circuit.
Claims (1)
低電圧の音声信号とが１対の平衡入力端子に入力
される有線通信用端末機に設けられ、前記呼出信
号の一方の極性成分の平滑出力のみにより呼出音
を出力する呼出信号検出回路において、一方の平
衡入力端子にカツプリング用のコンデンサ、抵抗
を介してカソードが接続されるとともにアノード
が他方の平衡入力端子に接続されたツエナダイオ
ードと、該ダイオードのカソードに入力端子が接
続され前記両信号の一方の極性成分により順方向
電圧降下が生じる一方向性半導体素子と、該素子
の出力端子と前記ダイオードのアノードとの間に
設けられた平滑用のコンデンサと、前記呼出信号
の一方の極性成分のみにもとづく前記コンデンサ
の平滑出力により駆動され、前記呼出音声を出力
する発振回路とを備えた呼出信号検出回路。 A wired communication terminal is provided in which a low-frequency calling signal and an audio signal having a higher frequency and lower voltage than the calling signal are input to a pair of balanced input terminals, and only a smoothed output of one polar component of the calling signal is provided. A ringing signal detection circuit that outputs a ringing tone includes a Zener diode whose cathode is connected to one balanced input terminal via a coupling capacitor and a resistor, and whose anode is connected to the other balanced input terminal; a unidirectional semiconductor element whose input terminal is connected to the cathode of the unidirectional semiconductor element and which causes a forward voltage drop due to one polarity component of the two signals; and a smoothing element provided between the output terminal of the element and the anode of the diode. A calling signal detection circuit comprising a capacitor and an oscillation circuit that is driven by a smoothed output of the capacitor based on only one polarity component of the calling signal and outputs the calling voice.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17638684U JPH0317496Y2 (en) | 1984-11-20 | 1984-11-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17638684U JPH0317496Y2 (en) | 1984-11-20 | 1984-11-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6190348U true JPS6190348U (en) | 1986-06-12 |
| JPH0317496Y2 JPH0317496Y2 (en) | 1991-04-12 |
Family
ID=30733985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17638684U Expired JPH0317496Y2 (en) | 1984-11-20 | 1984-11-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0317496Y2 (en) |
-
1984
- 1984-11-20 JP JP17638684U patent/JPH0317496Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0317496Y2 (en) | 1991-04-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS6190348U (en) | ||
| JPS5919493Y2 (en) | Input/output separation circuit | |
| JPH0124971Y2 (en) | ||
| JPS6454100U (en) | ||
| JPH02145852U (en) | ||
| JPH0191311U (en) | ||
| JPS6079817U (en) | diode detector | |
| JPS6385938U (en) | ||
| JPS6041995U (en) | vibrato circuit | |
| JPS60136592U (en) | speaker | |
| JPS6035666U (en) | telephone call circuit | |
| JPS61103969U (en) | ||
| JPS6289833U (en) | ||
| JPS6093331U (en) | switch circuit | |
| JPS6454447U (en) | ||
| JPS6370234U (en) | ||
| JPS60163850U (en) | Transmitting/receiving device | |
| JPS60136594U (en) | speaker | |
| JPS59180552U (en) | Simultaneous call type handset/receiver | |
| JPH01162928U (en) | ||
| JPS6050524U (en) | General purpose amplifier | |
| JPS6338437U (en) | ||
| JPS6193066U (en) | ||
| JPS61163448U (en) | ||
| JPS61126652U (en) |