JPS5717211A - Constant current bias circuit - Google Patents

Constant current bias circuit

Info

Publication number
JPS5717211A
JPS5717211A JP8469681A JP8469681A JPS5717211A JP S5717211 A JPS5717211 A JP S5717211A JP 8469681 A JP8469681 A JP 8469681A JP 8469681 A JP8469681 A JP 8469681A JP S5717211 A JPS5717211 A JP S5717211A
Authority
JP
Japan
Prior art keywords
current
constant current
diode
power supply
base
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
JP8469681A
Inventor
Yutaka Hirota
Toshikazu Yosumi
Original Assignee
Matsushita Electric Ind Co Ltd
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 Matsushita Electric Ind Co Ltd filed Critical Matsushita Electric Ind Co Ltd
Priority to JP8469681A priority Critical patent/JPS5717211A/en
Publication of JPS5717211A publication Critical patent/JPS5717211A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To improve the ripple rejection ratio of the power supply line remarkably, by connecting a diode between the base and emitter of a transistor (TR) for constant current and connecting the collector and base via a current Miller circuit.
CONSTITUTION: When a current flows to a line consisting of a TR9 and diode 8, a current flows to a TR7 for constant current, this current becomes a current in response to the ratio of the emitter resistors for TRs 9, 10 accurately via a current Miller circuit consisting of the Trs 9, 10 and this current flows to the line consisting of the TR9 and the diode 8 and converges to a constant current. With this constitution, an impedance viewing from the diode 8 to the positive power supply is made infinitive through the current Miller circuit and the impedance viewing the negative power supply becomes very low. Further, the constant current bias is picked up from the base of the TR7 for constant current.
COPYRIGHT: (C)1982,JPO&Japio
JP8469681A 1981-06-01 1981-06-01 Constant current bias circuit Pending JPS5717211A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8469681A JPS5717211A (en) 1981-06-01 1981-06-01 Constant current bias circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8469681A JPS5717211A (en) 1981-06-01 1981-06-01 Constant current bias circuit

Publications (1)

Publication Number Publication Date
JPS5717211A true JPS5717211A (en) 1982-01-28

Family

ID=13837822

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8469681A Pending JPS5717211A (en) 1981-06-01 1981-06-01 Constant current bias circuit

Country Status (1)

Country Link
JP (1) JPS5717211A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59126317A (en) * 1982-12-29 1984-07-20 Fujitsu Ltd Reference voltage generating circuit
JPS6390205A (en) * 1986-10-03 1988-04-21 Rohm Co Ltd Graphic equalizer
JPS63104505A (en) * 1986-10-21 1988-05-10 Nec Corp Voltage propagation circuit

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4850248A (en) * 1971-10-21 1973-07-16

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4850248A (en) * 1971-10-21 1973-07-16

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59126317A (en) * 1982-12-29 1984-07-20 Fujitsu Ltd Reference voltage generating circuit
JPH0560282B2 (en) * 1982-12-29 1993-09-02 Fujitsu Ltd
JPS6390205A (en) * 1986-10-03 1988-04-21 Rohm Co Ltd Graphic equalizer
JPS63104505A (en) * 1986-10-21 1988-05-10 Nec Corp Voltage propagation circuit

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