JPH0282161U - - Google Patents
Info
- Publication number
- JPH0282161U JPH0282161U JP16194888U JP16194888U JPH0282161U JP H0282161 U JPH0282161 U JP H0282161U JP 16194888 U JP16194888 U JP 16194888U JP 16194888 U JP16194888 U JP 16194888U JP H0282161 U JPH0282161 U JP H0282161U
- Authority
- JP
- Japan
- Prior art keywords
- terminal equipment
- constant
- supply circuit
- voltage unit
- terminal
- 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
- 239000000969 carrier Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Devices For Supply Of Signal Current (AREA)
Description
第１図は本考案装置を説明するための回路構成
図、第２図は局線と端末の間に設けられる最低料
金回線選択アダプタの結線図、第３図はスイツチ
回路の異なる実施例の結線図、第４図は従来例の
ブロツク構成図である。
１……定電流供給回路、２……スイツチ回路、
Ｅ１……第１の定電圧ユニツト、Ｅ２……第２の
定電圧ユニツト。
Figure 1 is a circuit configuration diagram for explaining the device of the present invention, Figure 2 is a wiring diagram of the lowest rate line selection adapter installed between the office line and the terminal, and Figure 3 is the wiring diagram of different embodiments of the switch circuit. FIG. 4 is a block diagram of a conventional example. 1 ...constant current supply circuit, 2 ...switch circuit,
E1 ...first constant voltage unit, E2...second constant voltage unit.
Claims (1)
のうち、同一地点間の通話料金が最低となる回線
を選択するアダプタを、電話交換機に接がる局線
と電話器等の端末機器との間に設置し、上記端末
機器の発呼オフフツク時に上記端末機器を上記局
線側から上記アダプタ側へ切換接続することによ
り上記端末機器に対して電流供給するための定電
流供給回路において、区々の抵抗値を有する複数
の上記端末機器に夫夫同一電流を給電する定電流
回路と、ダイヤルパルス送出時に上記定電流供給
回路の電源としてメーク期間に低い出力電圧を供
給する第１の定電圧ユニツトとブレーク期間に高
い出力電圧を供給する第２の定電圧ユニツトと、
上記定電流供給回路の通電による電圧降下に基い
て上記第２の定電圧ユニツトから上記第１の定電
圧ユニツトへ切換えるスイツチ回路とよりなるこ
とを特徴とする電話端末電流供給回路の電源装置
。 An adapter that selects the line with the lowest call charge between the same points from among telephone lines installed by multiple Type 1 telecommunications carriers is installed between the central office line connected to the telephone exchange and terminal equipment such as telephones. In a constant current supply circuit installed between the terminal equipment and supplying current to the terminal equipment by switching and connecting the terminal equipment from the office line side to the adapter side when the terminal equipment is off-hook for making a call, a constant current circuit that supplies the same current to the plurality of terminal devices having a resistance value of and a second constant voltage unit that supplies a high output voltage during the break period;
A power supply device for a telephone terminal current supply circuit, comprising a switch circuit that switches from the second constant voltage unit to the first constant voltage unit based on a voltage drop due to energization of the constant current supply circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16194888U JPH0644207Y2 (en) | 1988-12-14 | 1988-12-14 | Power supply device for telephone terminal current supply circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16194888U JPH0644207Y2 (en) | 1988-12-14 | 1988-12-14 | Power supply device for telephone terminal current supply circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0282161U true JPH0282161U (en) | 1990-06-25 |
| JPH0644207Y2 JPH0644207Y2 (en) | 1994-11-14 |
Family
ID=31445332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16194888U Expired - Lifetime JPH0644207Y2 (en) | 1988-12-14 | 1988-12-14 | Power supply device for telephone terminal current supply circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0644207Y2 (en) |
-
1988
- 1988-12-14 JP JP16194888U patent/JPH0644207Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0644207Y2 (en) | 1994-11-14 |
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