JPS59108919U - constant current circuit - Google Patents

constant current circuit

Info

Publication number
JPS59108919U
JPS59108919U JP1983000556U JP55683U JPS59108919U JP S59108919 U JPS59108919 U JP S59108919U JP 1983000556 U JP1983000556 U JP 1983000556U JP 55683 U JP55683 U JP 55683U JP S59108919 U JPS59108919 U JP S59108919U
Authority
JP
Japan
Prior art keywords
transistor
constant current
current circuit
resistor
reference potential
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
Application number
JP1983000556U
Other languages
Japanese (ja)
Inventor
米沢善昭
Original Assignee
三洋電機株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 三洋電機株式会社 filed Critical 三洋電機株式会社
Priority to JP1983000556U priority Critical patent/JPS59108919U/en
Publication of JPS59108919U publication Critical patent/JPS59108919U/en
Pending legal-status Critical Current

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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

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は従来の定電流回路を示す回路図、第2図は他の
従来例を示す回路図、第3図は本発明の実施例を示す回
路図、第4図は第3図に示す実施例の応用例を示す回路
図である。 主な図番の説明、1. 4. 9・・・トランジスタ、
2・・・ツェナーダイオード、3. 5. 8・・・抵
抗、6・・・LED、 7・・・駆動トランジスタ、1
0.15・・・定電流源、13・・・電流ミラー回路。
Fig. 1 is a circuit diagram showing a conventional constant current circuit, Fig. 2 is a circuit diagram showing another conventional example, Fig. 3 is a circuit diagram showing an embodiment of the present invention, and Fig. 4 is shown in Fig. 3. FIG. 3 is a circuit diagram showing an example of application of the embodiment. Explanation of main figure numbers, 1. 4. 9...transistor,
2... Zener diode, 3. 5. 8...Resistor, 6...LED, 7...Drive transistor, 1
0.15... constant current source, 13... current mirror circuit.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 定電圧がベースに印加される第1のトランジスタと、該
第1のトランジスタのエミッタと基準電位との間に接続
された第1の抵抗と、エミッタが第2の抵抗を介して前
記基準電位に接続された第2のトランジスタと、前記第
1及び第2のトランジスタのコレクタに接続された電流
ミラー回路とを有し、前記第2トランジスタに一定の電
流を流すようにしたことを特徴とする定電流回路。
a first transistor to which a constant voltage is applied to the base; a first resistor connected between the emitter of the first transistor and a reference potential; and a first transistor whose emitter is connected to the reference potential via a second resistor. a second transistor connected to the transistor; and a current mirror circuit connected to the collectors of the first and second transistors, and a constant current is caused to flow through the second transistor. current circuit.
JP1983000556U 1983-01-06 1983-01-06 constant current circuit Pending JPS59108919U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1983000556U JPS59108919U (en) 1983-01-06 1983-01-06 constant current circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1983000556U JPS59108919U (en) 1983-01-06 1983-01-06 constant current circuit

Publications (1)

Publication Number Publication Date
JPS59108919U true JPS59108919U (en) 1984-07-23

Family

ID=30132305

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1983000556U Pending JPS59108919U (en) 1983-01-06 1983-01-06 constant current circuit

Country Status (1)

Country Link
JP (1) JPS59108919U (en)

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