JPS647461U - - Google Patents
Info
- Publication number
- JPS647461U JPS647461U JP10148987U JP10148987U JPS647461U JP S647461 U JPS647461 U JP S647461U JP 10148987 U JP10148987 U JP 10148987U JP 10148987 U JP10148987 U JP 10148987U JP S647461 U JPS647461 U JP S647461U
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- resistor
- terminal
- supply transistor
- transistor
- 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 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Devices For Supply Of Signal Current (AREA)
Description
第１図は本考案の電源供給回路の一実施例を組
込んだ電話機の構成図、第２図は本考案の電源供
給回路の他の実施例を組込んだ電話機の構成図で
ある。
主な図番の説明、６……電源供給回路、７……
電源供給トランジスタ、８……第１抵抗、９……
第２抵抗、１１……ブリーダ抵抗、１２……制御
回路。
FIG. 1 is a block diagram of a telephone set incorporating one embodiment of the power supply circuit of the present invention, and FIG. 2 is a block diagram of a telephone set incorporating another embodiment of the power supply circuit of the present invention. Explanation of main drawing numbers, 6... Power supply circuit, 7...
Power supply transistor, 8...first resistor, 9...
Second resistor, 11... bleeder resistor, 12... control circuit.
Claims (1)
レクタ端子が接続される電源供給トランジスタと
、該電源供給トランジスタのコレクタ端子とベー
ス端子との間に接続される第１抵抗と、一端が前
記電源供給トランジスタのベース端子と前記第１
抵抗との接続部に接続され、他端が接地されるブ
リーダ抵抗と、一端に前記電源供給トランジスタ
のエミツタ端子を接続し、他端を出力端子部とす
る第２抵抗と、一端を前記電源供給トランジスタ
のベース端子に接続し、他端が前記出力端子部又
は、接地に接続されるコンデンサとより構成した
ことを特徴とする電源供給回路。 a power supply transistor whose collector terminal is connected to the telephone line via a diode bridge circuit; a first resistor connected between the collector terminal and the base terminal of the power supply transistor; and a first resistor whose one end is connected to the power supply transistor. the base terminal and the first
a bleeder resistor connected to a connection part with the resistor and whose other end is grounded; a second resistor having one end connected to the emitter terminal of the power supply transistor and the other end serving as an output terminal; and a second resistor having one end connected to the power supply transistor. 1. A power supply circuit comprising a capacitor connected to a base terminal of a transistor, the other end of which is connected to the output terminal section or ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10148987U JPH0638524Y2 (en) | 1987-07-01 | 1987-07-01 | Power supply circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10148987U JPH0638524Y2 (en) | 1987-07-01 | 1987-07-01 | Power supply circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS647461U true JPS647461U (en) | 1989-01-17 |
| JPH0638524Y2 JPH0638524Y2 (en) | 1994-10-05 |
Family
ID=31330534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10148987U Expired - Lifetime JPH0638524Y2 (en) | 1987-07-01 | 1987-07-01 | Power supply circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0638524Y2 (en) |
-
1987
- 1987-07-01 JP JP10148987U patent/JPH0638524Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0638524Y2 (en) | 1994-10-05 |
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