JPS55162610A - Push pull output circuit - Google Patents

Push pull output circuit

Info

Publication number
JPS55162610A
JPS55162610A JP6991679A JP6991679A JPS55162610A JP S55162610 A JPS55162610 A JP S55162610A JP 6991679 A JP6991679 A JP 6991679A JP 6991679 A JP6991679 A JP 6991679A JP S55162610 A JPS55162610 A JP S55162610A
Authority
JP
Japan
Prior art keywords
temperature coefficient
circuit
output circuit
bias
class
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
JP6991679A
Other languages
Japanese (ja)
Inventor
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 JP6991679A priority Critical patent/JPS55162610A/en
Publication of JPS55162610A publication Critical patent/JPS55162610A/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
    • H03F1/30—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters
    • H03F1/301—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters in MOSFET amplifiers

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)

Abstract

PURPOSE:To make bias set for output MOSFET at the class AB operation, by providing the temperature compensation means having positive temperature coefficient in the bias circuit. CONSTITUTION:In the push-pull output circuit constituted with a power MOSFET, the circuit is at the class B operation under the idling current (bias) in which the temperature coefficient of FET is zeroed. On the other hand, when the push-pull circuit is biased to the class AB, the temperature coefficient of MOSFETs(Q1, Q2) is negative, but compensation is made with a positive temperature coefficient of the saturation voltage between the collector and emitter of the bipolar transistor Q4 in the bias circuit. That is, since the temperature coefficient of the output circuit is zero, the idling current is set so that the temperature coefficient of the said bipolar transistor Q4 is in agreement with that of MOSFET.
JP6991679A 1979-06-06 1979-06-06 Push pull output circuit Pending JPS55162610A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6991679A JPS55162610A (en) 1979-06-06 1979-06-06 Push pull output circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6991679A JPS55162610A (en) 1979-06-06 1979-06-06 Push pull output circuit

Publications (1)

Publication Number Publication Date
JPS55162610A true JPS55162610A (en) 1980-12-18

Family

ID=13416485

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6991679A Pending JPS55162610A (en) 1979-06-06 1979-06-06 Push pull output circuit

Country Status (1)

Country Link
JP (1) JPS55162610A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2829886A1 (en) * 2001-09-18 2003-03-21 St Microelectronics Sa Class AB amplifier circuit and its application in generating high-voltage video signal

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2829886A1 (en) * 2001-09-18 2003-03-21 St Microelectronics Sa Class AB amplifier circuit and its application in generating high-voltage video signal
US6784739B2 (en) 2001-09-18 2004-08-31 Stmicroelectronics Sa Class AB amplifier circuit

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