JPS61195148U - - Google Patents
Info
- Publication number
- JPS61195148U JPS61195148U JP7365785U JP7365785U JPS61195148U JP S61195148 U JPS61195148 U JP S61195148U JP 7365785 U JP7365785 U JP 7365785U JP 7365785 U JP7365785 U JP 7365785U JP S61195148 U JPS61195148 U JP S61195148U
- Authority
- JP
- Japan
- Prior art keywords
- hook
- power supply
- zener diode
- voltage
- memory
- 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
- 230000001105 regulatory effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 1
Landscapes
- Devices For Supply Of Signal Current (AREA)
- Power Sources (AREA)
Description
第１図は本発明の実施例によるダイヤルメモリ
付電話機の電源回路を示す図、第２図は従来ある
ダイヤルメモリ付電話機の電源回路を示す図であ
る。
主な図番の説明、１……第１切り換えスイツチ
、２……第２切り換えスイツチ、８……ツエナー
ダイオード、９……ダイヤル信号発生回路、１２
……メモリ回路、１３……バツクアツプ用電源の
電池、１９……スイツチ。
FIG. 1 is a diagram showing a power supply circuit of a telephone with a dial memory according to an embodiment of the present invention, and FIG. 2 is a diagram showing a power supply circuit of a conventional telephone with a dial memory. Explanation of main figure numbers, 1... First changeover switch, 2... Second changeover switch, 8... Zener diode, 9... Dial signal generation circuit, 12
...Memory circuit, 13...Battery for backup power supply, 19...Switch.
Claims (1)
を所定の電圧にするツエナーダイオードと、オフ
フツク時に該ツエナーダイオードにより定電圧化
された電圧が電源端子間に印加されると共に所望
の電話番号を記憶するメモリ回路と、オンフツク
時刻メモリ回路の電源端子間にメモリ保持電圧を
供給するバツクアツプ用電源と前記ツエナーダイ
オードに直列接続されていると共にオンフツク開
放されるスイツチとからなるダイヤルメモリ付電
話機の電源回路。 A Zener diode that adjusts a DC voltage obtained from a telephone line to a predetermined voltage during off-hook, and a memory circuit that applies the voltage regulated by the Zener diode between power terminals during off-hook and stores a desired telephone number. A power supply circuit for a telephone with a dial memory, comprising a backup power supply for supplying a memory holding voltage between the power supply terminals of an on-hook time memory circuit, and a switch connected in series to the Zener diode and released from the on-hook.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7365785U JPS61195148U (en) | 1985-05-17 | 1985-05-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7365785U JPS61195148U (en) | 1985-05-17 | 1985-05-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61195148U true JPS61195148U (en) | 1986-12-05 |
Family
ID=30613225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7365785U Pending JPS61195148U (en) | 1985-05-17 | 1985-05-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61195148U (en) |
-
1985
- 1985-05-17 JP JP7365785U patent/JPS61195148U/ja active Pending
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