JPS54150952A - Pulse duration modulating amplifier - Google Patents

Pulse duration modulating amplifier

Info

Publication number
JPS54150952A
JPS54150952A JP6046078A JP6046078A JPS54150952A JP S54150952 A JPS54150952 A JP S54150952A JP 6046078 A JP6046078 A JP 6046078A JP 6046078 A JP6046078 A JP 6046078A JP S54150952 A JPS54150952 A JP S54150952A
Authority
JP
Japan
Prior art keywords
pulse duration
audio band
modulating amplifier
beat
output
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
JP6046078A
Other languages
Japanese (ja)
Inventor
Masaru Nishimura
Kenichi Sato
Yoshinobu Nishikawa
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 JP6046078A priority Critical patent/JPS54150952A/en
Publication of JPS54150952A publication Critical patent/JPS54150952A/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
    • H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
    • H03F3/217—Class D power amplifiers; Switching amplifiers

Landscapes

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

Abstract

PURPOSE:To prevent completely the beat noise component from intruding into the audio band by making the noise caused by the beat all feature the higher level than the switching frequency outside the audio band. CONSTITUTION:The output given from rectangular wave generator 3 of the pulse duration modulating amplifier is divided. The rectangular wave of the output undergoes pulse duration modulation 14, and switching part 10 is actuated through modulation 14. The DC output obtained from such switching regulator is used as the power source of the pulse dulation modulating amplifier enclosed by the broken line with the frequency set higher than the cut-off frequency of low-pass filter 9. Thus, the beat noise component can be prevented completely from intruding into the audio band.
JP6046078A 1978-05-18 1978-05-18 Pulse duration modulating amplifier Pending JPS54150952A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6046078A JPS54150952A (en) 1978-05-18 1978-05-18 Pulse duration modulating amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6046078A JPS54150952A (en) 1978-05-18 1978-05-18 Pulse duration modulating amplifier

Publications (1)

Publication Number Publication Date
JPS54150952A true JPS54150952A (en) 1979-11-27

Family

ID=13142890

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6046078A Pending JPS54150952A (en) 1978-05-18 1978-05-18 Pulse duration modulating amplifier

Country Status (1)

Country Link
JP (1) JPS54150952A (en)

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