JPS6032820U

JPS6032820U - current mirror circuit

Info

Publication number: JPS6032820U
Application number: JP12509383U
Authority: JP
Inventors: 孝尾形
Original assignee: 三菱電機株式会社
Priority date: 1983-08-10
Filing date: 1983-08-10
Publication date: 1985-03-06

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

[Brief explanation of drawings]

第１図は従来の電流ミラー回路の一例を示す回　　−略
図、第２図はこの考案による電流ミラー回路の一実施例
を示す回路図、第３図はこの考案の他の実施例を示す回
路図である。１・・・・・・基準電流供給用トランジスタ、２・・・
・・・出力トランジスタ、３・・・・・・基準電流源、
４・・・・・・駆動トランジスタ、５・・・・・・電源
端子、６・・・・・・バイアス抵抗、７・・・・・・負
荷抵抗、８・・・・・・出力端子、９・・・・・・モニ
タトランジスタ、１０・・・・・・制御トランジスタ、
１１．　１２．　１３．　１４・・・・・・バイアス抵
抗、１５・・・・・・駆動トランジスタ。Fig. 1 is a circuit diagram showing an example of a conventional current mirror circuit, Fig. 2 is a circuit diagram showing an embodiment of the current mirror circuit according to this invention, and Fig. 3 is a circuit diagram showing another embodiment of this invention. It is a diagram. 1...Reference current supply transistor, 2...
...Output transistor, 3...Reference current source,
4... Drive transistor, 5... Power supply terminal, 6... Bias resistor, 7... Load resistor, 8... Output terminal, 9...Monitor transistor, 10...Control transistor,
11. 12. 13. 14...Bias resistor, 15...Drive transistor.

Claims

[Scope of utility model registration request]

(1) A pair of transistors whose bases are commonly connected,
a reference current supply means for supplying a reference current to the collector of one transistor of the pair of transistors; a reference current supply means for supplying a reference current to the collector of one transistor of the pair of transistors; In a current mirror circuit configured to take out a current equal to or a certain magnification of a reference current from the collector of an output transistor other than the current supply side, a base and an emitter are connected to the collector of the output transistor and the emitter of the drive transistor, respectively. 1. A current mirror circuit comprising: a potential detecting transistor connected to the current mirror circuit; and controlling a current of the driving transistor by a collector output of the transistor.

(2) A current mirror according to claim 1, characterized in that a control means is provided for controlling the base current or reference current value of the transistors whose bases are commonly connected by the collector output of the potential detection transistor. circuit.