JPH0425391U - - Google Patents
Info
- Publication number
- JPH0425391U JPH0425391U JP6737290U JP6737290U JPH0425391U JP H0425391 U JPH0425391 U JP H0425391U JP 6737290 U JP6737290 U JP 6737290U JP 6737290 U JP6737290 U JP 6737290U JP H0425391 U JPH0425391 U JP H0425391U
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- power
- telephone
- main device
- circuit
- 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
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Devices For Supply Of Signal Current (AREA)
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
- Sub-Exchange Stations And Push- Button Telephones (AREA)
Description
第１図は本考案の一実施例を示す図、第２図は
従来例を示す図である。
Ａ……主装置、５……制御回路、７……内線電
話機、９……ドアホン、１９……第１電源部、２
０……第２電源部。
FIG. 1 is a diagram showing an embodiment of the present invention, and FIG. 2 is a diagram showing a conventional example. A... Main device, 5... Control circuit, 7... Extension telephone, 9... Door phone, 19... First power supply unit, 2
0...Second power supply section.
Claims (1)
される少なくとも１つの内線電話機と、同じく前
記主装置に接続されるドアホンと、前記電話装置
の動作を制御する制御回路とを具備した電話装置
であつて、商用交流電源に接続された第１の電源
トランスを含み、電源を前記ドアホンに供給する
第１電源部、商用電源に接続された第２の電源ト
ランスを含み、電源を前記制御回路に供給する第
２電源部を有する電源回路を設けたことを特徴と
する電話装置。 A telephone comprising a main device connected to a central office line, at least one extension telephone connected to the main device, a doorbell also connected to the main device, and a control circuit for controlling the operation of the telephone device. The apparatus includes a first power transformer connected to a commercial AC power supply, a first power supply unit supplying power to the door intercom, a second power transformer connected to the commercial power supply, and controlling the power supply as described above. 1. A telephone device comprising a power supply circuit having a second power supply section for supplying power to the circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6737290U JPH0425391U (en) | 1990-06-25 | 1990-06-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6737290U JPH0425391U (en) | 1990-06-25 | 1990-06-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0425391U true JPH0425391U (en) | 1992-02-28 |
Family
ID=31600889
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6737290U Pending JPH0425391U (en) | 1990-06-25 | 1990-06-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0425391U (en) |
-
1990
- 1990-06-25 JP JP6737290U patent/JPH0425391U/ja active Pending
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