JPS58158517U - power amplifier - Google Patents

power amplifier

Info

Publication number
JPS58158517U
JPS58158517U JP5544882U JP5544882U JPS58158517U JP S58158517 U JPS58158517 U JP S58158517U JP 5544882 U JP5544882 U JP 5544882U JP 5544882 U JP5544882 U JP 5544882U JP S58158517 U JPS58158517 U JP S58158517U
Authority
JP
Japan
Prior art keywords
power supply
supply voltage
output
input signal
power amplifier
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.)
Granted
Application number
JP5544882U
Other languages
Japanese (ja)
Other versions
JPH0210660Y2 (en
Inventor
井田　優
Original Assignee
ヤマハ株式会社
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 ヤマハ株式会社 filed Critical ヤマハ株式会社
Priority to JP5544882U priority Critical patent/JPS58158517U/en
Publication of JPS58158517U publication Critical patent/JPS58158517U/en
Application granted granted Critical
Publication of JPH0210660Y2 publication Critical patent/JPH0210660Y2/ja
Granted legal-status Critical Current

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Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は従来の電力増幅器の一構成例を示す回路図、第
２図は第１図に示す電力増幅器を説明するための波形図
、第３図はこの考案による電力増幅器の第１の実施例を
示す回路図、第４図は第１の実施例を説明するための波
形図、第５図はこの考案による電力増幅器の第２実施例
を示す回路図、第６図はこの考案による電力増幅器の具
体的な構成例を示す回路図である。 ｌａ、　　ｌｂ・・・・・・出力段増幅素子（トランジ
スタ）、２・・・・・・信号入力端子、５ａ、　　５ｂ
・・・・・・電源電圧切換回路（トランジスタ）、１５
ａ、１５ｂ・・・・・・第１の゛傭号経路（第１の立上
り制御回路、第２の立上り制御回路）、１９ａ、１９ｂ
・・・・・・第２−の信号経路（第１の立下り制御回路
、第２の立下り制御回路）。Fig. 1 is a circuit diagram showing an example of the configuration of a conventional power amplifier, Fig. 2 is a waveform diagram for explaining the power amplifier shown in Fig. 1, and Fig. 3 is a first implementation of the power amplifier according to this invention. A circuit diagram showing an example, FIG. 4 is a waveform diagram for explaining the first embodiment, FIG. 5 is a circuit diagram showing a second embodiment of the power amplifier according to this invention, and FIG. 6 is a power amplifier according to this invention. FIG. 2 is a circuit diagram showing a specific example of the configuration of an amplifier. la, lb...output stage amplification element (transistor), 2...signal input terminal, 5a, 5b
...Power supply voltage switching circuit (transistor), 15
a, 15b...First sign path (first rise control circuit, second rise control circuit), 19a, 19b
...Second signal path (first fall control circuit, second fall control circuit).

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 一　　　　　出力段増幅素子に供給する電源電圧を電源
電圧切換回路により入力信号に応じて切換えて前記入力
信号の増幅を行なう電力増幅器において、前記入力信号
の振幅が所定の振幅より大きくなった時に前記電源電圧
切換回路の出力電源電圧を高レベル側に切換える第１の
信号経路と、前記入力信号の高域周波数成分の振幅が所
定の振幅より大きくなった時に前記電源電圧切換回路の
出力を高レベル側に保持させると共に、この出力を漸次
低レベル側に移行させる第２の信号経路とを具備してな
る電力増幅器。(1) In a power amplifier that amplifies the input signal by switching the power supply voltage supplied to the output stage amplification element according to the input signal by a power supply voltage switching circuit, when the amplitude of the input signal becomes larger than a predetermined amplitude, the power supply a first signal path for switching the output power supply voltage of the voltage switching circuit to the high level side; and a first signal path for switching the output power supply voltage of the power supply voltage switching circuit to the high level side when the amplitude of the high frequency component of the input signal becomes larger than a predetermined amplitude. A power amplifier comprising a second signal path for holding the output at a low level and gradually shifting the output to a low level side.
JP5544882U 1982-04-16 1982-04-16 power amplifier Granted JPS58158517U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5544882U JPS58158517U (en) 1982-04-16 1982-04-16 power amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5544882U JPS58158517U (en) 1982-04-16 1982-04-16 power amplifier

Publications (2)

Publication Number Publication Date
JPS58158517U true JPS58158517U (en) 1983-10-22
JPH0210660Y2 JPH0210660Y2 (en) 1990-03-16

Family

ID=30066027

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5544882U Granted JPS58158517U (en) 1982-04-16 1982-04-16 power amplifier

Country Status (1)

Country Link
JP (1) JPS58158517U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0553318U (en) * 1991-10-25 1993-07-13 株式会社アドバンテスト Amplifier power supply voltage switching circuit
JPH07240639A (en) * 1993-12-20 1995-09-12 Peavey Electron Corp Amplifier that switchably operates in plural voltage modes according to level of input signal

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6133792A (en) * 1998-09-17 2000-10-17 Telefonakteibolaget Lm Ericsson Method and apparatus for preventing power amplifier saturation

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5657316U (en) * 1979-10-08 1981-05-18
JPS56174215U (en) * 1980-05-26 1981-12-23
JPS58109317U (en) * 1982-01-20 1983-07-26 パイオニア株式会社 Amplifier power supply circuit

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5657316U (en) * 1979-10-08 1981-05-18
JPS56174215U (en) * 1980-05-26 1981-12-23
JPS58109317U (en) * 1982-01-20 1983-07-26 パイオニア株式会社 Amplifier power supply circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0553318U (en) * 1991-10-25 1993-07-13 株式会社アドバンテスト Amplifier power supply voltage switching circuit
JPH07240639A (en) * 1993-12-20 1995-09-12 Peavey Electron Corp Amplifier that switchably operates in plural voltage modes according to level of input signal

Also Published As

Publication number Publication date
JPH0210660Y2 (en) 1990-03-16

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