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JPS5711510A - Power amplifier - Google Patents

Power amplifier

Info

Publication number
JPS5711510A
JPS5711510A JP8710080A JP8710080A JPS5711510A JP S5711510 A JPS5711510 A JP S5711510A JP 8710080 A JP8710080 A JP 8710080A JP 8710080 A JP8710080 A JP 8710080A JP S5711510 A JPS5711510 A JP S5711510A
Authority
JP
Japan
Prior art keywords
power supply
switching
terminal
response
half cycle
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
JP8710080A
Other languages
Japanese (ja)
Inventor
Masahiro Hirano
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Priority to JP8710080A priority Critical patent/JPS5711510A/en
Publication of JPS5711510A publication Critical patent/JPS5711510A/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
    • H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
    • H03F1/0205—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers
    • H03F1/0211—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers with control of the supply voltage or current
    • H03F1/0244—Stepped control

Landscapes

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

Abstract

PURPOSE:To improve the response and to save power, by providing a switching element with a signal system directly and switching the power supply, in switching the power supply of an output transistor (TR) in response to an input signal level. CONSTITUTION:An input signal Si in phase-inversion is inputted to a terminal 7 and it is applied to the base of a TR6 connected to a power supply terminal 1 via a resistor 5. The emitter of the TR6 is connected to a power supply terminal 2 via a varistor 8 and a constant current source 9. The TR6 is conductive at a positive half cycle of the signal Si, the TRs11,12 are operated and the TR6 is nonconductive at a negative half cycle, the TRs15,16 are operated and output is given to a load resistor 20. With this constitution, before the TRs11,12 supplied from the low potential power supply of the terminal 2 are saturated through the increased level of the signal Si, a power supply switching TR22 is conductive and switching is made to the high potential power supply of the terminal 1. Similar switching is made even at a negative half cycle. Thus, the response can be improved and the power can be saved.
JP8710080A 1980-06-26 1980-06-26 Power amplifier Pending JPS5711510A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8710080A JPS5711510A (en) 1980-06-26 1980-06-26 Power amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8710080A JPS5711510A (en) 1980-06-26 1980-06-26 Power amplifier

Publications (1)

Publication Number Publication Date
JPS5711510A true JPS5711510A (en) 1982-01-21

Family

ID=13905522

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8710080A Pending JPS5711510A (en) 1980-06-26 1980-06-26 Power amplifier

Country Status (1)

Country Link
JP (1) JPS5711510A (en)

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