JPS63541U - - Google Patents
Info
- Publication number
- JPS63541U JPS63541U JP9430386U JP9430386U JPS63541U JP S63541 U JPS63541 U JP S63541U JP 9430386 U JP9430386 U JP 9430386U JP 9430386 U JP9430386 U JP 9430386U JP S63541 U JPS63541 U JP S63541U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- dial
- voltage
- current
- dial sending
- 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 4
- 238000010586 diagram Methods 0.000 description 3
- 239000008186 active pharmaceutical agent Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
Landscapes
- Devices For Supply Of Signal Current (AREA)
Description
第１図は本考案の一実施例におけるダイヤル送
出用電源回路を設けた電話機の回路構成図、第２
図は同回路の動作説明に使用する信号波形図、第
３図は従来のダイヤル送出用電源回路の回路構成
図である。
１ａ，１ｂ……回線端子、２……フツクスイツ
チ、３……整流回路、４……定電流回路、５……
定電圧ダイオード、６……ダイオード、７……ダ
イヤル送出回路、９……ダイヤル送出用スイツチ
回路、１０……通話回路、１１……供給回路、１
２……小容量のコンデンサ、１３……充電回路、
１４……電流制限用の抵抗、１５……大容量のコ
ンデンサ、１６……トランジスタスイツチ、ＤＳ
……ダイヤル送出制御信号、ＭＳ……ミユート信
号。
Figure 1 is a circuit configuration diagram of a telephone equipped with a power supply circuit for dialing in one embodiment of the present invention;
The figure is a signal waveform diagram used to explain the operation of the circuit, and FIG. 3 is a circuit configuration diagram of a conventional dial sending power supply circuit. 1a, 1b... Line terminal, 2... Hook switch, 3... Rectifier circuit, 4... Constant current circuit, 5...
Constant voltage diode, 6...Diode, 7...Dial sending circuit, 9...Dial sending switch circuit, 10...Telephone circuit, 11...Supply circuit, 1
2...Small capacity capacitor, 13...Charging circuit,
14...Resistor for current limiting, 15...Large capacity capacitor, 16...Transistor switch, DS
...Dial transmission control signal, MS...Mute signal.
Claims (1)
給される直流電力に基づき所定の直流電圧および
電流を生成する電圧電流生成回路と、この電圧電
流生成回路からの出力を直接もしくは小容量のコ
ンデンサを介してダイヤル送出回路に供給する供
給回路と、前記ダイヤル送出回路に対し並列に接
続されこのダイヤル送出回路の立上り時に前記電
圧電流生成回路の出力を主として前記供給回路を
経てダイヤル送出回路へ供給させる電流制限素子
およびこの電流制限素子を介して充電する大容量
のコンデンサからなる充電回路と、少なくとも前
記ダイヤル送出回路のダイヤル信号送出期間に導
通して前記充電回路の電流制限素子の両端間を短
絡するスイツチ回路とを具備したことを特徴とす
るダイヤル送出用電源回路。 A voltage and current generation circuit generates a predetermined DC voltage and current based on the DC power supplied from the line side when the switch is closed, and the output from this voltage and current generation circuit is connected directly or through a small capacitor. a supply circuit that supplies the dial sending circuit; and a current limiting element that is connected in parallel to the dial sending circuit and supplies the output of the voltage and current generating circuit mainly through the supply circuit to the dial sending circuit when the dial sending circuit starts up. and a charging circuit comprising a large-capacity capacitor that charges via the current limiting element, and a switch circuit that conducts at least during the dial signal sending period of the dial sending circuit to short-circuit both ends of the current limiting element of the charging circuit. A dial sending power supply circuit characterized by comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986094303U JPH071878Y2 (en) | 1986-06-20 | 1986-06-20 | Dial sending power circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986094303U JPH071878Y2 (en) | 1986-06-20 | 1986-06-20 | Dial sending power circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63541U true JPS63541U (en) | 1988-01-05 |
| JPH071878Y2 JPH071878Y2 (en) | 1995-01-18 |
Family
ID=30957626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986094303U Expired - Lifetime JPH071878Y2 (en) | 1986-06-20 | 1986-06-20 | Dial sending power circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH071878Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5927656U (en) * | 1982-08-13 | 1984-02-21 | 神田通信工業株式会社 | Additional circuit of pulse dial IC |
-
1986
- 1986-06-20 JP JP1986094303U patent/JPH071878Y2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5927656U (en) * | 1982-08-13 | 1984-02-21 | 神田通信工業株式会社 | Additional circuit of pulse dial IC |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH071878Y2 (en) | 1995-01-18 |
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