JPH0164228U - - Google Patents
Info
- Publication number
- JPH0164228U JPH0164228U JP1987159346U JP15934687U JPH0164228U JP H0164228 U JPH0164228 U JP H0164228U JP 1987159346 U JP1987159346 U JP 1987159346U JP 15934687 U JP15934687 U JP 15934687U JP H0164228 U JPH0164228 U JP H0164228U
- Authority
- JP
- Japan
- Prior art keywords
- terminal
- power source
- diode
- load
- power supply
- 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
- Electronic Switches (AREA)
Description
第１図はこの考案に係る電源回路の実施例を示
す回路図である。第２図は従来の電源回路の回路
図である。
主要部分の符号の説明、１：第１の電源、２，
５，６，７，９，１２：抵抗器、３，４，１３：
トランジスタ、８：第１のダイオード、１０，１
１：第２のダイオード、１４：第１の端子、１５
：第２の端子、１６：端子、１７：負荷、１８：
第２の電源。
FIG. 1 is a circuit diagram showing an embodiment of the power supply circuit according to this invention. FIG. 2 is a circuit diagram of a conventional power supply circuit. Explanation of symbols of main parts, 1: first power supply, 2,
5, 6, 7, 9, 12: resistor, 3, 4, 13:
Transistor, 8: first diode, 10,1
1: second diode, 14: first terminal, 15
: second terminal, 16: terminal, 17: load, 18:
Second power source.
Claims (1)
る第１の端子と、第１の端子に負荷が接続された
か、または、第１の端子に第２の電源が接続され
たかの判別信号を第２の端子に出力するようにし
た切換回路とからなる電源回路において、 前記切換回路を、第１の端子に負荷が接続され
たことを検出する第１のダイオードと、第１の端
子に第２の電源が接続されたことを検出する第２
のダイオードとで構成したことを特徴とする電源
回路。[Claims for Utility Model Registration] A first power source and a first terminal to which a load or a second power source are connected; and a switching circuit configured to output a determination signal as to whether a load is connected to the first terminal to a second terminal. a diode, and a second circuit that detects that the second power source is connected to the first terminal.
A power supply circuit characterized by comprising a diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987159346U JPH0164228U (en) | 1987-10-20 | 1987-10-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987159346U JPH0164228U (en) | 1987-10-20 | 1987-10-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0164228U true JPH0164228U (en) | 1989-04-25 |
Family
ID=31440477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987159346U Pending JPH0164228U (en) | 1987-10-20 | 1987-10-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0164228U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS577844B2 (en) * | 1973-12-29 | 1982-02-13 |
-
1987
- 1987-10-20 JP JP1987159346U patent/JPH0164228U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS577844B2 (en) * | 1973-12-29 | 1982-02-13 |