JPS59137646U - Power supply selection circuit - Google Patents
Power supply selection circuitInfo
- Publication number
- JPS59137646U JPS59137646U JP3112883U JP3112883U JPS59137646U JP S59137646 U JPS59137646 U JP S59137646U JP 3112883 U JP3112883 U JP 3112883U JP 3112883 U JP3112883 U JP 3112883U JP S59137646 U JPS59137646 U JP S59137646U
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- selection circuit
- supply selection
- output terminal
- supply voltage
- 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
Landscapes
- Electronic Switches (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は本考案の実施例の回路図、第２図及び第３図は
本考案の応用例の多回路図である。
主要部分の符号の説明、１・・・・・・第１の電源入力
端、２・・・・・・第２の電源入力端、３・・曲出力端
、Ｑ１〜Ｑ３・・・・・・スイッチングトランジスタ、
Ｄ工・・・・・・ダイオード。FIG. 1 is a circuit diagram of an embodiment of the present invention, and FIGS. 2 and 3 are multi-circuit diagrams of applied examples of the present invention. Explanation of symbols of main parts: 1...First power input terminal, 2...Second power input terminal, 3...Music output terminal, Q1-Q3...・Switching transistor,
D Engineering: Diode.
Claims (1)
択一的に出力端へ導出する電源供給選択回路であって、
前記第１の電源入力端に所定電源電圧が印加されている
時に、前記第２の電源入力端と前記出力端との間を断と
するスイッチング手段と、゛ 前記第１の電源入力
端と前記出力端との間に５いて前記所定電源電圧に対し
順方向となる一方向性素子とを有することを特徴とする
電源供給選択回路。A power supply selection circuit that selectively derives the electric power applied to the first and second power supply input terminals to the output terminal, the circuit comprising:
a switching means for disconnecting between the second power input terminal and the output terminal when a predetermined power supply voltage is applied to the first power input terminal; A power supply selection circuit comprising: a unidirectional element which is connected between the output terminal and the predetermined power supply voltage in a forward direction with respect to the predetermined power supply voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3112883U JPS59137646U (en) | 1983-03-03 | 1983-03-03 | Power supply selection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3112883U JPS59137646U (en) | 1983-03-03 | 1983-03-03 | Power supply selection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59137646U true JPS59137646U (en) | 1984-09-13 |
Family
ID=30161983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3112883U Pending JPS59137646U (en) | 1983-03-03 | 1983-03-03 | Power supply selection circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59137646U (en) |
-
1983
- 1983-03-03 JP JP3112883U patent/JPS59137646U/en active Pending
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