JPS55166317A - Electric power amplifier - Google Patents

Electric power amplifier

Info

Publication number
JPS55166317A
JPS55166317A JP7438079A JP7438079A JPS55166317A JP S55166317 A JPS55166317 A JP S55166317A JP 7438079 A JP7438079 A JP 7438079A JP 7438079 A JP7438079 A JP 7438079A JP S55166317 A JPS55166317 A JP S55166317A
Authority
JP
Japan
Prior art keywords
composite
conduction
voltage
transistor
trq6
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
JP7438079A
Other languages
Japanese (ja)
Inventor
Masayuki Takori
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP7438079A priority Critical patent/JPS55166317A/en
Publication of JPS55166317A publication Critical patent/JPS55166317A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/30—Single-ended push-pull [SEPP] amplifiers; Phase-splitters therefor
    • H03F3/3083—Single-ended push-pull [SEPP] amplifiers; Phase-splitters therefor the power transistors being of the same type
    • H03F3/3086—Single-ended push-pull [SEPP] amplifiers; Phase-splitters therefor the power transistors being of the same type two power transistors being controlled by the input signal
    • H03F3/3088—Single-ended push-pull [SEPP] amplifiers; Phase-splitters therefor the power transistors being of the same type two power transistors being controlled by the input signal with asymmetric control, i.e. one control branch containing a supplementary phase inverting transistor

Landscapes

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

Abstract

PURPOSE:To reduce greatly the notching distortion by increasing forcedly the base voltage of one transistor of the composite NPN transistor and then securing the conduction for the composite transistor with a low level of voltage to compensate the turn-on delay time. CONSTITUTION:In accordance with the AC input signal applied to the base of the driving step transistor (TR)Q2, the conduction and the breaking are given alternately between the composite NPNTR of Darlington-connected TRQ5, Q<6> and the composite TR of PNPTRQ4 plus NPNTRQ6, Q9 each, and then the amplified signal is supplied to speaker SP. The base voltage of TRQ6 is increased forcedly although the turn-on delay time may occur when TRQ5, Q8 are broken with TRQ4 conducting. As a result, the conduction can be secured for TRQ6, Q9 with the lower voltage than the voltage needed so far to give the conduction to TRQ6, Q9. Accordingly, the turn-on delay time can be compensated for the composite TR of TRQ4 plus Q6, Q9 to give an extreme reduction to the notching distortion.
JP7438079A 1979-06-13 1979-06-13 Electric power amplifier Pending JPS55166317A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7438079A JPS55166317A (en) 1979-06-13 1979-06-13 Electric power amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7438079A JPS55166317A (en) 1979-06-13 1979-06-13 Electric power amplifier

Publications (1)

Publication Number Publication Date
JPS55166317A true JPS55166317A (en) 1980-12-25

Family

ID=13545494

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7438079A Pending JPS55166317A (en) 1979-06-13 1979-06-13 Electric power amplifier

Country Status (1)

Country Link
JP (1) JPS55166317A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63172507A (en) * 1987-01-09 1988-07-16 Matsushita Electric Ind Co Ltd buffer circuit

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5390847A (en) * 1977-01-21 1978-08-10 Mitsubishi Electric Corp Power amplifier

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5390847A (en) * 1977-01-21 1978-08-10 Mitsubishi Electric Corp Power amplifier

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63172507A (en) * 1987-01-09 1988-07-16 Matsushita Electric Ind Co Ltd buffer circuit

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