JPS54152843A - Bias circuit - Google Patents

Bias circuit

Info

Publication number
JPS54152843A
JPS54152843A JP6106478A JP6106478A JPS54152843A JP S54152843 A JPS54152843 A JP S54152843A JP 6106478 A JP6106478 A JP 6106478A JP 6106478 A JP6106478 A JP 6106478A JP S54152843 A JPS54152843 A JP S54152843A
Authority
JP
Japan
Prior art keywords
bias
distortion rate
increased
circuit
bias 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
Application number
JP6106478A
Other languages
Japanese (ja)
Inventor
Shinsuke Iguchi
Kyoichi Takagawa
Yasuo Ohata
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP6106478A priority Critical patent/JPS54152843A/en
Publication of JPS54152843A publication Critical patent/JPS54152843A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/32—Modifications of amplifiers to reduce non-linear distortion
    • H03F1/3217—Modifications of amplifiers to reduce non-linear distortion in single ended push-pull amplifiers

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)

Abstract

PURPOSE:To improve the distortion rate at the high frequency by installing the capacitor between the base and the emitter of the bias circuit in the output transistor and increasing the bias current as the signal frequency increases. CONSTITUTION:The distortion rate of the push-pull output circuit can be improved by increasing the bias current (idle current) of the output transistor Tr. Impedance Z1 provided between the base and the emitter of TrQ7 in bias circuit 2 decreases as the signal frequency increases. Thus, the bias voltage can be increased. In other words, the value of capacitor C and resistance R1 are set so that Z1 may decrease at the frequency band where the distortion rate deteriorates as shown by the dotted lines. As a result, the bias voltage can be increased and then the bias current can be increased for output TrQ1-Q4, thus improving the distortion rate at the high frequency band.
JP6106478A 1978-05-24 1978-05-24 Bias circuit Pending JPS54152843A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6106478A JPS54152843A (en) 1978-05-24 1978-05-24 Bias circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6106478A JPS54152843A (en) 1978-05-24 1978-05-24 Bias circuit

Publications (1)

Publication Number Publication Date
JPS54152843A true JPS54152843A (en) 1979-12-01

Family

ID=13160349

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6106478A Pending JPS54152843A (en) 1978-05-24 1978-05-24 Bias circuit

Country Status (1)

Country Link
JP (1) JPS54152843A (en)

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