JPS574604A - Electric power amplifier - Google Patents

Electric power amplifier

Info

Publication number
JPS574604A
JPS574604A JP7799980A JP7799980A JPS574604A JP S574604 A JPS574604 A JP S574604A JP 7799980 A JP7799980 A JP 7799980A JP 7799980 A JP7799980 A JP 7799980A JP S574604 A JPS574604 A JP S574604A
Authority
JP
Japan
Prior art keywords
capacitor
voltage
trq17
current
electric power
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.)
Granted
Application number
JP7799980A
Other languages
Japanese (ja)
Other versions
JPS616565B2 (en
Inventor
Eiichi Matsumura
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 JP7799980A priority Critical patent/JPS574604A/en
Publication of JPS574604A publication Critical patent/JPS574604A/en
Publication of JPS616565B2 publication Critical patent/JPS616565B2/ja
Granted 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
    • H03F1/303—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters using a switching device

Landscapes

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

Abstract

PURPOSE:To improve the ansient characteristics such as a shock noise of distortion during application of power supply, by detecting the fact that the both-end voltage of a capacitor becomes lower than a certain reference voltage and then increasing the output current of the 3rd current supply circuit. CONSTITUTION:Transistors TRQ16 and Q19 are conductive and a TRQ17 is nonconductive TRQ17 while the voltage of a capacitor C2 is lower than the reference voltage after application of power supply. When the terminal voltage of the capacitor C2 increases higher than the base potential of a TRQ15, the output of a comparator inverts to make TRQ16 and Q19 nonconductive and the TRQ17 conductive. Thus TRQ20 and Q21 are driven to supply the current decided by a resistance R24 to the capaictor C2 to accelerate the rise of the capacitor C2. According to a rise of charging voltage of the capacitor C2, the TRQ6 and Q5 and then TRQ9, Q10, Q11 and Q12 are actuated to start operation of an electric power amplifier.
JP7799980A 1980-06-10 1980-06-10 Electric power amplifier Granted JPS574604A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7799980A JPS574604A (en) 1980-06-10 1980-06-10 Electric power amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7799980A JPS574604A (en) 1980-06-10 1980-06-10 Electric power amplifier

Publications (2)

Publication Number Publication Date
JPS574604A true JPS574604A (en) 1982-01-11
JPS616565B2 JPS616565B2 (en) 1986-02-27

Family

ID=13649491

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7799980A Granted JPS574604A (en) 1980-06-10 1980-06-10 Electric power amplifier

Country Status (1)

Country Link
JP (1) JPS574604A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0242765Y2 (en) * 1984-11-06 1990-11-14
JPH0527180U (en) * 1991-09-13 1993-04-09 正 宮路 Flush toilet tank

Also Published As

Publication number Publication date
JPS616565B2 (en) 1986-02-27

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