JPS62133415U - - Google Patents

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Publication number
JPS62133415U
JPS62133415U JP2164886U JP2164886U JPS62133415U JP S62133415 U JPS62133415 U JP S62133415U JP 2164886 U JP2164886 U JP 2164886U JP 2164886 U JP2164886 U JP 2164886U JP S62133415 U JPS62133415 U JP S62133415U
Authority
JP
Japan
Prior art keywords
power amplifier
digital code
bit
digital
input signal
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
JP2164886U
Other languages
Japanese (ja)
Other versions
JPH0520008Y2 (en
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 filed Critical
Priority to JP1986021648U priority Critical patent/JPH0520008Y2/ja
Publication of JPS62133415U publication Critical patent/JPS62133415U/ja
Application granted granted Critical
Publication of JPH0520008Y2 publication Critical patent/JPH0520008Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Amplifiers (AREA)

Description

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

第１図はこの考案の一実施例の構成を示す回路
図、第２図は第１図に示すアナログアンプ部Ａ．
ＡＭＰとデジタルアンプ部Ｄ．ＡＭＰ出力信号を
示す波形図、第３図は同実施例におけるデジタル
アンプ部のより詳細な実施例を示す回路図、第４
図イはＰＷＭ増幅回路の構成を示すブロツク図、
同図ロおよびハは各々ＰＷＭ変調波形および復調
波形を示す波形図、第５図は電圧切換方式を用い
た従来の増幅器の回路図、第６図は電圧切換方式
における切換段数と電力ロスとの関係を示す波形
図である。 ５……絶対値検出回路、６……レベル検出コン
パレータ、７……エンコーダ（以上５，６，７は
変換回路）、Ｖ０〜Ｖ２……電圧源、ＳＷＡ〜Ｓ
ＷＤ……電界効果トランジスタ（切換回路）、Ｄ
１〜Ｄ３……ダイオード（切換回路）、Ｄ．ＡＭ
Ｐ……デジタル電力増幅器、Ａ．ＡＭＰ……アナ
ログ電力増幅器。 FIG. 1 is a circuit diagram showing the configuration of an embodiment of this invention, and FIG. 2 is a circuit diagram showing the configuration of an analog amplifier section A.
AMP and digital amplifier section D. FIG. 3 is a waveform diagram showing the AMP output signal, FIG. 3 is a circuit diagram showing a more detailed embodiment of the digital amplifier section in the same embodiment, and FIG.
Figure A is a block diagram showing the configuration of a PWM amplifier circuit.
Figure 5 is a circuit diagram of a conventional amplifier using the voltage switching method, and Figure 6 is a diagram showing the number of switching stages and power loss in the voltage switching method. FIG. 3 is a waveform diagram showing the relationship. 5...Absolute value detection circuit, 6...Level detection comparator, 7...Encoder (5, 6, and 7 above are conversion circuits), V0 to V2 ...Voltage source, SWA to S
WD...field effect transistor (switching circuit), D
1 to D3 ...Diode (switching circuit), D. A.M.
P...Digital power amplifier, A. AMP...Analog power amplifier.

Claims (1)

【実用新案登録請求の範囲】 (イ) 予め設定された複数の基準値とアナログ入
力信号の絶対値とを比較し、この比較結果に基づ
いて逐次前記アナログ入力信号をデジタルコード
化する変換回路と、前記デジタルコードの各ビツ
トに対応して設けられるとともに電圧値が各ビツ
トに対応して重み付けされている複数の電圧源と
、これら各電圧源のうち前記デジタルコードによ
つて指定されるものを直列接続して出力する切換
回路とを有するデジタル電力増幅器と、 (ロ) 前記アナログ入力信号をアナログ信号のま
ま電力増幅して負荷に供給するとともに、前記デ
ジタル電力増幅器の出力を動作電源として用いる
アナログ電力増幅器。 とを具備することを特徴とする電力増幅器。[Claims for Utility Model Registration] (a) A conversion circuit that compares the absolute value of an analog input signal with a plurality of preset reference values and sequentially converts the analog input signal into a digital code based on the comparison results. , a plurality of voltage sources provided corresponding to each bit of the digital code and whose voltage values are weighted corresponding to each bit, and one of these voltage sources specified by the digital code. (b) a digital power amplifier having a switching circuit that is connected in series and outputs; power amplifier. A power amplifier comprising:
JP1986021648U 1986-02-18 1986-02-18 Expired - Lifetime JPH0520008Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1986021648U JPH0520008Y2 (en) 1986-02-18 1986-02-18

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1986021648U JPH0520008Y2 (en) 1986-02-18 1986-02-18

Publications (2)

Publication Number Publication Date
JPS62133415U true JPS62133415U (en) 1987-08-22
JPH0520008Y2 JPH0520008Y2 (en) 1993-05-26

Family

ID=30818279

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1986021648U Expired - Lifetime JPH0520008Y2 (en) 1986-02-18 1986-02-18

Country Status (1)

Country Link
JP (1) JPH0520008Y2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002345071A (en) * 2001-05-11 2002-11-29 Sony Corp Audio signal reproducing device
JP2020035810A (en) * 2018-08-28 2020-03-05 株式会社東芝 Semiconductor device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51132745A (en) * 1975-05-14 1976-11-18 Sansui Electric Co Amplifier
JPS59137614U (en) * 1983-03-07 1984-09-13 ヤマハ株式会社 power amplifier

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51132745A (en) * 1975-05-14 1976-11-18 Sansui Electric Co Amplifier
JPS59137614U (en) * 1983-03-07 1984-09-13 ヤマハ株式会社 power amplifier

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002345071A (en) * 2001-05-11 2002-11-29 Sony Corp Audio signal reproducing device
JP2020035810A (en) * 2018-08-28 2020-03-05 株式会社東芝 Semiconductor device

Also Published As

Publication number Publication date
JPH0520008Y2 (en) 1993-05-26

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