JPS5459057A - Noise reduction amplifying device - Google Patents

Noise reduction amplifying device

Info

Publication number
JPS5459057A
JPS5459057A JP12631577A JP12631577A JPS5459057A JP S5459057 A JPS5459057 A JP S5459057A JP 12631577 A JP12631577 A JP 12631577A JP 12631577 A JP12631577 A JP 12631577A JP S5459057 A JPS5459057 A JP S5459057A
Authority
JP
Japan
Prior art keywords
phase
amplitude
signal
amp4
residual
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
JP12631577A
Other languages
Japanese (ja)
Inventor
Toshio Asai
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 JP12631577A priority Critical patent/JPS5459057A/en
Publication of JPS5459057A publication Critical patent/JPS5459057A/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
    • H03F1/26—Modifications of amplifiers to reduce influence of noise generated by amplifying elements

Landscapes

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

Abstract

PURPOSE:To reduce the residual noise easily as well as to minimize the size of the device as a whole, by supplying the residual noise caused by the power supply ripple along with the signal to which the amplitude of anti-phase or the phase is modulated to the amplifier. CONSTITUTION:Input signal 1 is put into amplitude modulator 2, where the residual amplitude noise produced at klystron AMP4 and the signal of the anti-phase amplitude modulated are formed via power supply ripple detector circuit 7. This signal is then supplied to modulator 2 and phase modulator 3, and the residual amplitude noise caused at AMP4, the phase noise and the signal to which the amplitude or the phase of reverse amplitude and anti-phase are modulated are formed via the above mentioned anti-phase amplitude signal to be supplied to AMP4. Therefore, the residual noise caused at AMP4 is reduced by the beam power supply ripple of AMP4 and then deliverd to gignal output terminal 5.
JP12631577A 1977-10-19 1977-10-19 Noise reduction amplifying device Pending JPS5459057A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12631577A JPS5459057A (en) 1977-10-19 1977-10-19 Noise reduction amplifying device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12631577A JPS5459057A (en) 1977-10-19 1977-10-19 Noise reduction amplifying device

Publications (1)

Publication Number Publication Date
JPS5459057A true JPS5459057A (en) 1979-05-12

Family

ID=14932135

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12631577A Pending JPS5459057A (en) 1977-10-19 1977-10-19 Noise reduction amplifying device

Country Status (1)

Country Link
JP (1) JPS5459057A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008199176A (en) * 2007-02-09 2008-08-28 Norio Shimizu Method and apparatus for canceling hum noise of audio amplifier

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008199176A (en) * 2007-02-09 2008-08-28 Norio Shimizu Method and apparatus for canceling hum noise of audio amplifier

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