JPS6431213A - Constant current circuit - Google Patents

Constant current circuit

Info

Publication number
JPS6431213A
JPS6431213A JP18824087A JP18824087A JPS6431213A JP S6431213 A JPS6431213 A JP S6431213A JP 18824087 A JP18824087 A JP 18824087A JP 18824087 A JP18824087 A JP 18824087A JP S6431213 A JPS6431213 A JP S6431213A
Authority
JP
Japan
Prior art keywords
input current
variation
base
resistor
node
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
JP18824087A
Other languages
Japanese (ja)
Inventor
Hisao Kuwabara
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
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 Toshiba Corp filed Critical Toshiba Corp
Priority to JP18824087A priority Critical patent/JPS6431213A/en
Publication of JPS6431213A publication Critical patent/JPS6431213A/en
Pending legal-status Critical Current

Links

Landscapes

  • Continuous-Control Power Sources That Use Transistors (AREA)

Abstract

PURPOSE:To suppress the variation of an output current to the variation of an input current by supplying the input current to a node between the base of a 1st transistor (TR) and a 1st resistor and supplying the output current from the collector of a 2nd TR to a load circuit. CONSTITUTION:A resistor R2 is connected between a node of the base of a TR Q1 and an input current source 11 and a node of the collector of the TR Q1 and the base of a TR Q2. Even if the input current IIN is varied, the input current IIN is allowed to flow into the resistor R2 and the variation of the base voltage of the TR Q2 can be suppressed to a small value by a voltage drop R2IIN generated by the inflow of the input current IIN. Consequently, the variation of the output current to that of the input current IIN can be suppressed to a small value.
JP18824087A 1987-07-28 1987-07-28 Constant current circuit Pending JPS6431213A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18824087A JPS6431213A (en) 1987-07-28 1987-07-28 Constant current circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18824087A JPS6431213A (en) 1987-07-28 1987-07-28 Constant current circuit

Publications (1)

Publication Number Publication Date
JPS6431213A true JPS6431213A (en) 1989-02-01

Family

ID=16220244

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18824087A Pending JPS6431213A (en) 1987-07-28 1987-07-28 Constant current circuit

Country Status (1)

Country Link
JP (1) JPS6431213A (en)

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