JPS63129354U - - Google Patents
Info
- Publication number
- JPS63129354U JPS63129354U JP2013287U JP2013287U JPS63129354U JP S63129354 U JPS63129354 U JP S63129354U JP 2013287 U JP2013287 U JP 2013287U JP 2013287 U JP2013287 U JP 2013287U JP S63129354 U JPS63129354 U JP S63129354U
- Authority
- JP
- Japan
- Prior art keywords
- melody sound
- telephone
- zener diode
- hold
- primary side
- 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 2
- 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
- 238000010586 diagram Methods 0.000 description 2
Description
第１図は本考案の一実施例を示す回路図、第２
図は従来例の回路図である。
Ａ……電話機、Ｌ１，Ｌ２……電話回線、ＤＢ
……整流器、ＰＣ……フオトカプラ、Ｒ１……閉
結抵抗、Ｒ２……電流制限抵抗、ＺＤ１……ツエ
ナーダイオード、ＭＥ……メロデイ音発生回路、
Ｓ１……保留セツト用スイツチ、Ｃ１……結合コ
ンデンサ、Ｅ……直流電源。
Figure 1 is a circuit diagram showing one embodiment of the present invention;
The figure is a circuit diagram of a conventional example. A...Telephone, L1 , L2 ...Telephone line, DB
... Rectifier, PC ... Photocoupler, R 1 ... Closing resistance, R 2 ... Current limiting resistor, ZD 1 ... Zener diode, ME ... Melody sound generation circuit,
S1 ...Switch for holding set, C1 ...Coupling capacitor, E...DC power supply.
Claims (1)
流器の二次側に、正極側より順次フオトカプラの
二次側と閉結抵抗とツエナーダイオードとを直列
接続し、ツエナーダイオードの両端電圧をメロデ
イ音発生回路に供給すると共に、メロデイ音発生
回路の信号出力端を結合コンデンサを介して閉結
抵抗の正極側へ連結し、フオトカプラの一次側を
電流制限抵抗及び保留セツト用スイツチを介して
直流電源に接続して成る電話機の保留メロデイ音
送出装置。 On the secondary side of the rectifier whose primary side is connected to the telephone line in parallel with the telephone set, the secondary side of the photocoupler, the closing resistor, and the Zener diode are connected in series from the positive side, and the voltage across the Zener diode is used to generate a melody sound. In addition to supplying the signal to the circuit, the signal output end of the melody sound generation circuit is connected to the positive terminal side of the closing resistor via a coupling capacitor, and the primary side of the photo coupler is connected to a DC power supply via a current limiting resistor and a hold set switch. A hold melody sound sending device for a telephone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987020132U JPH0614532Y2 (en) | 1987-02-14 | 1987-02-14 | Telephone hold melody sound sending device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987020132U JPH0614532Y2 (en) | 1987-02-14 | 1987-02-14 | Telephone hold melody sound sending device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63129354U true JPS63129354U (en) | 1988-08-24 |
| JPH0614532Y2 JPH0614532Y2 (en) | 1994-04-13 |
Family
ID=30815358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987020132U Expired - Lifetime JPH0614532Y2 (en) | 1987-02-14 | 1987-02-14 | Telephone hold melody sound sending device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0614532Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60174567A (en) * | 1984-02-20 | 1985-09-07 | Matsushita Electric Ind Co Ltd | Telephone set |
-
1987
- 1987-02-14 JP JP1987020132U patent/JPH0614532Y2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60174567A (en) * | 1984-02-20 | 1985-09-07 | Matsushita Electric Ind Co Ltd | Telephone set |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0614532Y2 (en) | 1994-04-13 |