JPS5887903A - Direct current power supply circuit driving power amplyfying circuit - Google Patents

Direct current power supply circuit driving power amplyfying circuit

Info

Publication number
JPS5887903A
JPS5887903A JP56186574A JP18657481A JPS5887903A JP S5887903 A JPS5887903 A JP S5887903A JP 56186574 A JP56186574 A JP 56186574A JP 18657481 A JP18657481 A JP 18657481A JP S5887903 A JPS5887903 A JP S5887903A
Authority
JP
Japan
Prior art keywords
power supply
voltage
circuit
amplyfying
direct current
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
JP56186574A
Other languages
Japanese (ja)
Inventor
Kenichi Sato
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.)
Sanyo Electric Co Ltd
Sanyo Denki Co Ltd
Original Assignee
Sanyo Electric Co Ltd
Sanyo Denki 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 Sanyo Electric Co Ltd, Sanyo Denki Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP56186574A priority Critical patent/JPS5887903A/en
Publication of JPS5887903A publication Critical patent/JPS5887903A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To improve the utilizing efficiency of power supply, by increasing the supply voltage to a circuit unit, when the envelope voltage of an input or output signal exceeds a prescribed value.
CONSTITUTION: Power is applied to a circuit integrated circuit for general- pupose amplifier from ordinary terminals 27 and 28. A variable voltage in response to an amplification signal level is applied to power inputs 37, 38 of the output stage from PWM amplifying circuits 4, 4' via diodes 6, 6'. If a signal inputted to a terminal 1 exceeds an output voltage of the circuits 4, 4', switching transistors 8, 8' are conductive and the power supply path to output stage transistors 5, 5' is switched to a constant voltage power supply path applied to the terminals 27, 28. The efficiency of power supply of general-purpose amplifier can be improved by using externally mounted components.
COPYRIGHT: (C)1983,JPO&Japio
JP56186574A 1981-11-19 1981-11-19 Direct current power supply circuit driving power amplyfying circuit Pending JPS5887903A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56186574A JPS5887903A (en) 1981-11-19 1981-11-19 Direct current power supply circuit driving power amplyfying circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56186574A JPS5887903A (en) 1981-11-19 1981-11-19 Direct current power supply circuit driving power amplyfying circuit

Publications (1)

Publication Number Publication Date
JPS5887903A true JPS5887903A (en) 1983-05-25

Family

ID=16190914

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56186574A Pending JPS5887903A (en) 1981-11-19 1981-11-19 Direct current power supply circuit driving power amplyfying circuit

Country Status (1)

Country Link
JP (1) JPS5887903A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06244645A (en) * 1993-02-17 1994-09-02 Nec Corp Amplifier circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06244645A (en) * 1993-02-17 1994-09-02 Nec Corp Amplifier circuit

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