JPS6361854U - - Google Patents
Info
- Publication number
- JPS6361854U JPS6361854U JP15565386U JP15565386U JPS6361854U JP S6361854 U JPS6361854 U JP S6361854U JP 15565386 U JP15565386 U JP 15565386U JP 15565386 U JP15565386 U JP 15565386U JP S6361854 U JPS6361854 U JP S6361854U
- Authority
- JP
- Japan
- Prior art keywords
- capacitor
- supply circuit
- power supply
- magnet
- charged
- 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
- 239000003990 capacitor Substances 0.000 claims description 7
- 230000000903 blocking effect Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Devices For Supply Of Signal Current (AREA)
- Prepayment Telephone Systems (AREA)
Description
図は本考案の実施例を示し、第１図は電源回路
および付属回路の回路図、第２図は公衆電話機の
ブロツク図である。
２……ＤＢ（ダイオードブリツジ）、３……Ｐ
Ｓ（電源回路）、５……ＴＫＣ（通話回路）、Ｌ
１，Ｌ２……線路端子、ＺＤ……定電圧ダイオー
ド、Ｄ１〜Ｄ５……ダイオード、Ｃ１〜Ｃ３……
コンデンサ、Ｑ１〜Ｑ３……ＴＲ（トランジスタ
）、Ｒ１〜Ｒ６……抵抗器。
The figures show an embodiment of the present invention; FIG. 1 is a circuit diagram of a power supply circuit and ancillary circuits, and FIG. 2 is a block diagram of a public telephone. 2...DB (diode bridge), 3...P
S (power supply circuit), 5...TKC (telephone circuit), L
1 , L2 ... Line terminal, ZD... Constant voltage diode, D1 to D5 ... Diode, C1 to C3 ...
Capacitor, Q1 to Q3 ...TR (transistor), R1 to R6 ...Resistor.
Claims (1)
サを充電し、該コンデンサの端子電圧をマグネツ
トの電源として供給する電話機の電源回路におい
て、前記ループ電流により逆流阻止用のダイオー
ドを介して充電され前記マグネツトの電源を供給
する第１のコンデンサと、前記ループ電流により
逆流阻止用のダイオードを介して充電される第２
のコンデンサと、前記第１および第２のコンデン
サ間に接続され前記マグネツトの駆動信号が生じ
ている間オフとなるスイツチング素子とを設けた
ことを特徴とする電話機の電源回路。 In a telephone power supply circuit, a capacitor is charged by a loop current passing through a DC loop, and the terminal voltage of the capacitor is supplied as a power source for a magnet.In a telephone power supply circuit, the capacitor is charged by the loop current through a reverse current blocking diode and supplies power to the magnet. a first capacitor charged by the loop current through a reverse blocking diode;
A power supply circuit for a telephone set, comprising: a capacitor; and a switching element connected between the first and second capacitors and turned off while a drive signal for the magnet is generated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15565386U JPS6361854U (en) | 1986-10-13 | 1986-10-13 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15565386U JPS6361854U (en) | 1986-10-13 | 1986-10-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6361854U true JPS6361854U (en) | 1988-04-23 |
Family
ID=31076544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15565386U Pending JPS6361854U (en) | 1986-10-13 | 1986-10-13 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6361854U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5726832A (en) * | 1980-07-24 | 1982-02-13 | Canon Inc | Flash device capable of continuous flash emission |
| JPS60134659A (en) * | 1983-12-23 | 1985-07-17 | Tamura Electric Works Ltd | Power source circuit of public telephone |
-
1986
- 1986-10-13 JP JP15565386U patent/JPS6361854U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5726832A (en) * | 1980-07-24 | 1982-02-13 | Canon Inc | Flash device capable of continuous flash emission |
| JPS60134659A (en) * | 1983-12-23 | 1985-07-17 | Tamura Electric Works Ltd | Power source circuit of public telephone |