JPS56139077A - Bias circuit - Google Patents

Bias circuit

Info

Publication number
JPS56139077A
JPS56139077A JP4051680A JP4051680A JPS56139077A JP S56139077 A JPS56139077 A JP S56139077A JP 4051680 A JP4051680 A JP 4051680A JP 4051680 A JP4051680 A JP 4051680A JP S56139077 A JPS56139077 A JP S56139077A
Authority
JP
Japan
Prior art keywords
transistor
collector
current
transistors
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
JP4051680A
Other languages
Japanese (ja)
Inventor
Yoshiharu Nagayama
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.)
CHIYOU LSI GIJUTSU KENKYU KUMIAI
CHO LSI GIJUTSU KENKYU KUMIAI
Original Assignee
CHIYOU LSI GIJUTSU KENKYU KUMIAI
CHO LSI GIJUTSU KENKYU KUMIAI
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 CHIYOU LSI GIJUTSU KENKYU KUMIAI, CHO LSI GIJUTSU KENKYU KUMIAI filed Critical CHIYOU LSI GIJUTSU KENKYU KUMIAI
Priority to JP4051680A priority Critical patent/JPS56139077A/en
Publication of JPS56139077A publication Critical patent/JPS56139077A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
  • Dc-Dc Converters (AREA)

Abstract

PURPOSE:To obtain stable bias voltage by supplying a current to the second transistor connected commonly at the emitter of a transistor in response to the collector current of the transistor to which a reference input voltage is applied. CONSTITUTION:A reference input voltage Va is applied to the base of the first transistor Q1, the first and the second transistors Q1 and Q2 are commonly connected at the emitters, and connected to a current source I1. A resistor R1 is connected between the collector and the base of the second transistor Q2, and a resistor R2 is connected between the base and the emitter of the transistor, and an output bias voltage VA can be obtained from the collector of the transistor Q2. Transistors Q3, Q4 form a current mirror circuit, and since the current responsive to the collector current of the first transistor Q1 is supplied to the collector of the second transistor Q2, the transistors Q1, Q2 are not turned OFF even if there are irregularitin in the elements and the variations in the temperature.
JP4051680A 1980-03-31 1980-03-31 Bias circuit Pending JPS56139077A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4051680A JPS56139077A (en) 1980-03-31 1980-03-31 Bias circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4051680A JPS56139077A (en) 1980-03-31 1980-03-31 Bias circuit

Publications (1)

Publication Number Publication Date
JPS56139077A true JPS56139077A (en) 1981-10-30

Family

ID=12582678

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4051680A Pending JPS56139077A (en) 1980-03-31 1980-03-31 Bias circuit

Country Status (1)

Country Link
JP (1) JPS56139077A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5416020A (en) * 1977-07-06 1979-02-06 Mazda Motor Corp Exhaust gas purifier for engine

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5416020A (en) * 1977-07-06 1979-02-06 Mazda Motor Corp Exhaust gas purifier for engine

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