JPS605549U - Lowest voltage selection circuit - Google Patents
Lowest voltage selection circuitInfo
- Publication number
- JPS605549U JPS605549U JP9622683U JP9622683U JPS605549U JP S605549 U JPS605549 U JP S605549U JP 9622683 U JP9622683 U JP 9622683U JP 9622683 U JP9622683 U JP 9622683U JP S605549 U JPS605549 U JP S605549U
- Authority
- JP
- Japan
- Prior art keywords
- current source
- constant current
- output terminal
- transistors
- 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
Landscapes
- Control Of Electrical Variables (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) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は本考案の一実施例の回路図である。
ＴＩ、 Ｔ２．・・・・・・、 Ｔｎ・・・・・・複数
の入力端子、Ｑｌ、 Ｑ２．・・・・・・、 Ｑｎ・・
・・・・複数のＰＮＰ トランジスタ、１・・・・・・
電源の一方の出力端子、２・・・・・・接地端子、３・
・・・・・等価ダイオード、４・・・・・・第１の定電
流源、５・・・・・・第２の定電流源、６・・・・・・
出力端子。FIG. 1 is a circuit diagram of an embodiment of the present invention. TI, T2. ......, Tn... multiple input terminals, Ql, Q2. ......, Qn...
...Multiple PNP transistors, 1...
One output terminal of the power supply, 2... Ground terminal, 3.
...Equivalent diode, 4...First constant current source, 5...Second constant current source, 6...
Output terminal.
Claims (1)
ぞれにトランジスタのベースがそれぞれ接続され、前記
各トランジスタのコレクタは共に直流電源の他方の出力
端子に接続され、前記各トランジスタのエミッタは共通
接続され、この共通接続点と前記電源の他方の出力端子
との間にはトランジスタのコレクタとベースを短絡して
一方の電極とし、エミッタを他方の電極とした等価ダイ
オードと第１の定電流源の直列回路が接続され、また、
前記共通接続点から第２の定電流源を介して前記電源の
一方の出力端子に接続され、前記等価ダイオードと第２
の定電流源の接続点が出力端子とされ、前記第２の定電
流源に流れる電流は前記第１の定電流源に流れる電流の
２倍に設定されていることを特徴とする最低電圧選択回
路。The bases of the transistors are connected to each of a plurality of input terminals to which different voltages are applied, the collectors of the transistors are both connected to the other output terminal of the DC power supply, and the emitters of the transistors are commonly connected, Between this common connection point and the other output terminal of the power supply, there is connected a series circuit of an equivalent diode and a first constant current source, with the collector and base of the transistor short-circuited to serve as one electrode, and the emitter as the other electrode. is connected, and
The common connection point is connected to one output terminal of the power supply via a second constant current source, and the equivalent diode and the second
A connection point of the constant current source is an output terminal, and the current flowing through the second constant current source is set to twice the current flowing through the first constant current source. circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9622683U JPS605549U (en) | 1983-06-22 | 1983-06-22 | Lowest voltage selection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9622683U JPS605549U (en) | 1983-06-22 | 1983-06-22 | Lowest voltage selection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS605549U true JPS605549U (en) | 1985-01-16 |
Family
ID=30229419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9622683U Pending JPS605549U (en) | 1983-06-22 | 1983-06-22 | Lowest voltage selection circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS605549U (en) |
-
1983
- 1983-06-22 JP JP9622683U patent/JPS605549U/en active Pending
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