JPS60112115U - constant current circuit - Google Patents
constant current circuitInfo
- Publication number
- JPS60112115U JPS60112115U JP20150083U JP20150083U JPS60112115U JP S60112115 U JPS60112115 U JP S60112115U JP 20150083 U JP20150083 U JP 20150083U JP 20150083 U JP20150083 U JP 20150083U JP S60112115 U JPS60112115 U JP S60112115U
- Authority
- JP
- Japan
- Prior art keywords
- current
- circuit
- current mirror
- constant current
- amplifier circuit
- 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)
- Amplifiers (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図及び第２図は従来の定電流回路を示す接続図、第
３図は本考案による定電流回路の一実施例を示す接続図
である。
ＩＡ、ＩＢ・・・・・・トランジスタ対、２・・・・・
・負荷回路、３・・・・・・定電流回路、４・・・・・
・カーレントミラー回路、ＡＭＰｌ、ＡＭＰｌ ｌ・・
・・・・フィードバック用増幅回路。1 and 2 are connection diagrams showing a conventional constant current circuit, and FIG. 3 is a connection diagram showing an embodiment of the constant current circuit according to the present invention. IA, IB... Transistor pair, 2...
・Load circuit, 3... Constant current circuit, 4...
・Current mirror circuit, AMPl, AMPl...
...Feedback amplifier circuit.
Claims (1)
ー電流を流すようになされかつ上記第１の電流を負荷に
接続するカーレントミラー回路と、上記カーレントミラ
ー回路の上記第２のカーレントミラー電流端に得られる
）イードバック信号を受けて上記制御電流の値を補正す
るフィードバック用増幅回路とを具えることを特徴とす
る定電流回路。 ２ 上記カーレントミラー回路は上記第２のカーレント
ミラー電流を検出電圧に変換する電流検出用抵抗を有し
、上記フィードバック信号用増幅回路は上記検出電圧を
設定入力信号と比較する比較増幅回路で構成され、上記
フィードしくツク増幅回路の出力端に得られる比較出力
によって上記カーレントミラー回路の上記制御信号を制
御するようにしてなる実用新案登録請求の範囲第１項に
記載の定電流回路。[Claims for Utility Model Registration] 1. A current mirror circuit configured to flow first and second current mirror currents corresponding to a control current and connecting the first current to a load, and the current mirror circuit. a feedback amplifier circuit that receives an feedback signal (obtained at the second current mirror current end of the circuit) and corrects the value of the control current. 2. The current mirror circuit has a current detection resistor that converts the second current mirror current into a detection voltage, and the feedback signal amplifier circuit is a comparison amplifier circuit that compares the detection voltage with a set input signal. 2. The constant current circuit according to claim 1, wherein the constant current circuit is configured such that the control signal of the current mirror circuit is controlled by the comparison output obtained at the output end of the feed amplifier circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20150083U JPS60112115U (en) | 1983-12-31 | 1983-12-31 | constant current circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20150083U JPS60112115U (en) | 1983-12-31 | 1983-12-31 | constant current circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60112115U true JPS60112115U (en) | 1985-07-30 |
Family
ID=30763350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20150083U Pending JPS60112115U (en) | 1983-12-31 | 1983-12-31 | constant current circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60112115U (en) |
-
1983
- 1983-12-31 JP JP20150083U patent/JPS60112115U/en active Pending
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