JPS623154U - - Google Patents
Info
- Publication number
- JPS623154U JPS623154U JP9312685U JP9312685U JPS623154U JP S623154 U JPS623154 U JP S623154U JP 9312685 U JP9312685 U JP 9312685U JP 9312685 U JP9312685 U JP 9312685U JP S623154 U JPS623154 U JP S623154U
- Authority
- JP
- Japan
- Prior art keywords
- dial pulse
- pulse signal
- switching element
- display
- voltage
- 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
Landscapes
- Devices For Supply Of Signal Current (AREA)
Description
図は本考案の電話機の表示回路図である。
主な図番の説明、２……リンガー検出回路、６
……発光ダイオード、７……リンガ表示トランジ
スタ、８……ダイヤル信号発生回路、１０……電
池、１３……電圧検出器、１４……第１スイツチ
ングトランジスタ、１５……第２スイツチングト
ランジスタ、１６……第１制御トランジスタ、１
７……第２制御トランジスタ。
The figure is a display circuit diagram of the telephone according to the present invention. Explanation of main figure numbers, 2... Ringer detection circuit, 6
... Light emitting diode, 7 ... Ringer display transistor, 8 ... Dial signal generation circuit, 10 ... Battery, 13 ... Voltage detector, 14 ... First switching transistor, 15 ... Second switching transistor, 16...first control transistor, 1
7...Second control transistor.
Claims (1)
整流回路と、ダイヤルパルス信号を発生するため
のダイヤルパルス信号発生回路と、該ダイヤルパ
ルス信号発生回路のメモリーを保持するためのバ
ツクアツプ電源と該バツクアツプ電源がメモリー
保持のために必要な所定電圧の低限になつた事を
検出する電圧検出器と該電圧検出器の出力により
オン、オフを制御される第１スイツチング素子と
、オンフツク時にはオフ状態にあると共にオフフ
ツク時には前記ダイヤルパルス発生回路より発生
されるダイヤルパルス信号にてオン、オフを制御
される第２スイツチング素子と前記第１スイツチ
ング素子と第２スイツチング素子により表示動作
を制御される表示素子とよりなり前記表示素子に
よりオフフツク時にはキーボードのキーボタン操
作による所定のダイヤルパルス信号の送信状態を
表示し、かつメモリーバツクアツプ電源のメモリ
ー保持電圧状態を表示する電話機の表示回路。 A rectifier circuit that determines the polarity of the voltage supplied from the telephone line, a dial pulse signal generation circuit that generates a dial pulse signal, a backup power supply for holding the memory of the dial pulse signal generation circuit, and the backup power supply. a voltage detector for detecting that the voltage has reached a lower limit of a predetermined voltage necessary for memory retention; a first switching element that is turned on and off by the output of the voltage detector; and a first switching element that is in an off state when on-hook. and a second switching element whose ON and OFF states are controlled by a dial pulse signal generated by the dial pulse generation circuit during off-hook, and a display element whose display operation is controlled by the first switching element and the second switching element. A display circuit for a telephone that uses the display element to display the transmission state of a predetermined dial pulse signal by key button operation on a keyboard during off-hook, and also displays the memory holding voltage state of a memory backup power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9312685U JPS623154U (en) | 1985-06-20 | 1985-06-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9312685U JPS623154U (en) | 1985-06-20 | 1985-06-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS623154U true JPS623154U (en) | 1987-01-09 |
Family
ID=30650523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9312685U Pending JPS623154U (en) | 1985-06-20 | 1985-06-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS623154U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0661244U (en) * | 1993-02-03 | 1994-08-30 | 義輝 海宝 | Heckomi moxibustion needle device |
-
1985
- 1985-06-20 JP JP9312685U patent/JPS623154U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0661244U (en) * | 1993-02-03 | 1994-08-30 | 義輝 海宝 | Heckomi moxibustion needle device |
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