JPS5738010A - Power amplifier - Google Patents

Power amplifier

Info

Publication number
JPS5738010A
JPS5738010A JP11436380A JP11436380A JPS5738010A JP S5738010 A JPS5738010 A JP S5738010A JP 11436380 A JP11436380 A JP 11436380A JP 11436380 A JP11436380 A JP 11436380A JP S5738010 A JPS5738010 A JP S5738010A
Authority
JP
Japan
Prior art keywords
amplifying circuit
low
pass filter
amplifying
filter
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
JP11436380A
Other languages
Japanese (ja)
Inventor
Masaru Nishimura
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
Original Assignee
Sanyo 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 Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP11436380A priority Critical patent/JPS5738010A/en
Publication of JPS5738010A publication Critical patent/JPS5738010A/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
    • H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers

Landscapes

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

Abstract

PURPOSE:To obtain an amplifying circuit high in efficiency and excellent in distortion characteristics, by separating an amplifying signal into low and high frequency component and amplifying the low frequency at a PWM amplifying circuit and the high frequency component at a conventional analog amplifying circuit respectively. CONSTITUTION:A signal inputted to an input terminal 10 is split at a low-pass filter 11 and a high-pass filter 12. An amplifying circuit 13 of PWM system is connected in cascade to the low-pass filter 11 and a conventional analog amplifying circuit 14 of class A or B is connected to the high-pass filter 12 and the signals are amplified. In this case, the split frequency of a filter splitting the band is at about 1kHz and the synthesized characteristics of the filter and the amplifying circuit are of flat frequency characteristics at the entire band. Since the low frequency component concentrated with energy among the amplification signal is amplified with highly efficient PWM system, the efficiency can be increased.
JP11436380A 1980-08-19 1980-08-19 Power amplifier Pending JPS5738010A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11436380A JPS5738010A (en) 1980-08-19 1980-08-19 Power amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11436380A JPS5738010A (en) 1980-08-19 1980-08-19 Power amplifier

Publications (1)

Publication Number Publication Date
JPS5738010A true JPS5738010A (en) 1982-03-02

Family

ID=14635840

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11436380A Pending JPS5738010A (en) 1980-08-19 1980-08-19 Power amplifier

Country Status (1)

Country Link
JP (1) JPS5738010A (en)

Similar Documents

Publication Publication Date Title
JPS55149512A (en) Amplifier
JPS5353946A (en) Power amplifier
ES428173A1 (en) Amplifier circuit
DE3166120D1 (en) Audio power amplifier with d-class push-pull end stage
JPS54160150A (en) Frequency selecting circuit
JPS5746517A (en) Noise reduction circuit
JPS5564412A (en) Frequency characteristic regulator
JPS5738010A (en) Power amplifier
JPS5787216A (en) Amplifying circuit
JPS5553910A (en) Power amplifier
EP0374543A3 (en) Wide bandwidth push-pull amplifier
JPS5760714A (en) Adjusting device for frequency characteristic
JPS5546672A (en) Transistor amplifier circuit
JPS51123546A (en) Power amplifier
JPS6451704A (en) Feedback amplifier circuit
JPS54162444A (en) Voice amplifier circuit using pulse modulation
JPS55137707A (en) Multistage amplifier of microwave band
JPS5437664A (en) Automatic gain adjusting circuit
JPS5644289A (en) Signal receiver
JPS5637717A (en) Amplifier
JPS57171809A (en) Power amplifying circuit
JPS5664508A (en) Low-band compensating circuit
JPS5723305A (en) Electric power amplifying circuit
SU693531A1 (en) Amplifier
JPS5779718A (en) Negative feedback amplifier