JPH028276U - - Google Patents
Info
- Publication number
- JPH028276U JPH028276U JP8578988U JP8578988U JPH028276U JP H028276 U JPH028276 U JP H028276U JP 8578988 U JP8578988 U JP 8578988U JP 8578988 U JP8578988 U JP 8578988U JP H028276 U JPH028276 U JP H028276U
- Authority
- JP
- Japan
- Prior art keywords
- switching transistor
- signal
- circuit
- winding
- transmitting
- 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.)
- Pending
Links
- 238000004804 winding Methods 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 2
- 230000008054 signal transmission Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
Landscapes
- Sub-Exchange Stations And Push- Button Telephones (AREA)
Description
第１図は本考案の一実施例を表す回路図、第２
図は従来の回路図である。
５……送信信号入力端子、６……受信信号送出
端子、７，８……ボタン電話機に接続される信号
送受信端子、Ｒ１……抵抗、ＺＤ……ツエナーダ
イオード、Ｃ１，Ｃ２……コンデンサ、Ｑ３，Ｑ
４……スイツチング・トランジスタ、Ｔ２……３
巻線パルストランス、Ｔ２ａ，Ｔ２ｂ，Ｔ２ｃ…
…３巻線パルストランスＴ２の巻線。
Fig. 1 is a circuit diagram showing one embodiment of the present invention;
The figure is a conventional circuit diagram. 5... Transmission signal input terminal, 6... Reception signal output terminal, 7, 8... Signal transmission/reception terminal connected to button telephone, R1... Resistor, ZD... Zener diode, C1, C2... Capacitor, Q3 ,Q
4...Switching transistor, T2...3
Wire-wound pulse transformer, T2a, T2b, T2c...
...Winding of 3-winding pulse transformer T2.
Claims (1)
と直列にパルストランスの送信側巻線を接続し、
スイツチング用トランジスタのオン、オフに基づ
く前記送信側巻線に生じる電力をパルストランス
の信号線側巻線に中継して信号パルスを信号線に
送出するボタン電話装置の信号送信回路において
、 前記電源を抵抗とツエナーダイオードとの直列
回路で構成し、このツエナーダイオードの両端電
圧を前記スイツチング用トランジスタと送信側巻
線との直列回路に供給するように構成してなるボ
タン電話装置の信号送信回路。[Scope of claim for utility model registration] Connecting the transmitting winding of a pulse transformer in series with a switching transistor connected to a power supply,
In a signal transmission circuit of a button telephone device, the power generated in the transmission side winding based on the on/off state of a switching transistor is relayed to the signal line side winding of a pulse transformer to send signal pulses to the signal line. A signal transmitting circuit for a button telephone device, comprising a series circuit of a resistor and a Zener diode, and configured to supply the voltage across the Zener diode to the series circuit of the switching transistor and the transmitting winding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8578988U JPH028276U (en) | 1988-06-30 | 1988-06-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8578988U JPH028276U (en) | 1988-06-30 | 1988-06-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH028276U true JPH028276U (en) | 1990-01-19 |
Family
ID=31310444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8578988U Pending JPH028276U (en) | 1988-06-30 | 1988-06-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH028276U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5855716U (en) * | 1981-10-08 | 1983-04-15 | 阿部 義幸 | Safety top kettle for stove |
-
1988
- 1988-06-30 JP JP8578988U patent/JPH028276U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5855716U (en) * | 1981-10-08 | 1983-04-15 | 阿部 義幸 | Safety top kettle for stove |