JP2005167512A - D級増幅器 - Google Patents
D級増幅器 Download PDFInfo
- Publication number
- JP2005167512A JP2005167512A JP2003402173A JP2003402173A JP2005167512A JP 2005167512 A JP2005167512 A JP 2005167512A JP 2003402173 A JP2003402173 A JP 2003402173A JP 2003402173 A JP2003402173 A JP 2003402173A JP 2005167512 A JP2005167512 A JP 2005167512A
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- pulse
- circuit
- input
- waveform
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- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
Abstract
【課題の解決手段】 D級増幅器1は、パルス信号を複数出力するカウンタ回路2と、このカウンタ回路2から出力されたパルス信号を抽出するパルス抽出回路3と、このパルス抽出回路3から出力された抽出パルス信号の入力時間だけ比較波形生成基本周期用クロックパルス信号を出力する3ステートバッファ4と、この3ステートバッファ4の出力が入力するとともに、3ステートバッファ4の出力に応じて時定数が変化することにより変形比較三角波形を出力する積分回路5とからなる比較波形生成回路を備えたものである。
【選択図】 図1
Description
2 カウンタ回路
3 パルス抽出回路
4 3ステートバッファ
5 積分回路
6 サンプルホールド回路
7 コンパレータ
8 電流バッファ
9 低域濾波器
Claims (2)
- パルス信号を複数出力するパルス発生回路と、このパルス発生回路から出力されたパルス信号を抽出するパルス抽出回路と、このパルス抽出回路から出力された抽出パルス信号の入力時間だけ比較波形生成基本周期用クロックパルス信号を出力する3ステートバッファと、この3ステートバッファの出力が入力するとともに、3ステートバッファの出力に応じて時定数が変化することにより変形比較三角波形を出力する積分回路とからなる比較波形生成回路を備えた
ことを特徴とするD級増幅器。 - 請求項1記載の比較波形生成回路を備える一方、入力信号をサンプルホールドしてサンプルホールド波形を出力するサンプルホールド回路を備え、前記比較波形生成回路から出力された変形比較三角波形と、前記サンプルホールド回路から出力されたサンプルホールド波形とをコンパレータで比較して、前記入力信号をパルス振幅変調したパルス振幅変調信号を出力し、このコンパレータから出力されたパルス振幅変調信号を、電流バッファと低域濾波器を順次通して増幅信号出力とすることにより非線形の入出力特性を有する
ことを特徴とするD級増幅器。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003402173A JP4452487B2 (ja) | 2003-12-01 | 2003-12-01 | D級増幅器 |
US10/999,172 US7102432B2 (en) | 2003-12-01 | 2004-11-29 | Class D amplifier |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003402173A JP4452487B2 (ja) | 2003-12-01 | 2003-12-01 | D級増幅器 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2005167512A true JP2005167512A (ja) | 2005-06-23 |
JP4452487B2 JP4452487B2 (ja) | 2010-04-21 |
Family
ID=34631663
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2003402173A Expired - Fee Related JP4452487B2 (ja) | 2003-12-01 | 2003-12-01 | D級増幅器 |
Country Status (2)
Country | Link |
---|---|
US (1) | US7102432B2 (ja) |
JP (1) | JP4452487B2 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2021187288A1 (ja) * | 2020-03-16 | 2021-09-23 | ヤマハ株式会社 | D級アンプ |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8313527B2 (en) | 2007-11-05 | 2012-11-20 | Allergan, Inc. | Soft prosthesis shell texturing method |
US8506627B2 (en) | 2008-08-13 | 2013-08-13 | Allergan, Inc. | Soft filled prosthesis shell with discrete fixation surfaces |
US9050184B2 (en) | 2008-08-13 | 2015-06-09 | Allergan, Inc. | Dual plane breast implant |
US20110093069A1 (en) | 2009-10-16 | 2011-04-21 | Allergan, Inc. | Implants and methdos for manufacturing same |
WO2011094155A2 (en) | 2010-01-28 | 2011-08-04 | Allergan, Inc. | Open celled foams, implants including them and processes for making same |
US8889751B2 (en) | 2010-09-28 | 2014-11-18 | Allergan, Inc. | Porous materials, methods of making and uses |
US8877822B2 (en) | 2010-09-28 | 2014-11-04 | Allergan, Inc. | Porogen compositions, methods of making and uses |
US9044897B2 (en) | 2010-09-28 | 2015-06-02 | Allergan, Inc. | Porous materials, methods of making and uses |
US9138308B2 (en) | 2010-02-03 | 2015-09-22 | Apollo Endosurgery, Inc. | Mucosal tissue adhesion via textured surface |
CA2788265A1 (en) | 2010-02-05 | 2011-08-11 | Allergan, Inc. | Biocompatible structures and compositions |
US9138309B2 (en) | 2010-02-05 | 2015-09-22 | Allergan, Inc. | Porous materials, methods of making and uses |
US9205577B2 (en) | 2010-02-05 | 2015-12-08 | Allergan, Inc. | Porogen compositions, methods of making and uses |
EP2563851A1 (en) | 2010-04-27 | 2013-03-06 | Allergan, Inc. | Foam-like materials and methods for producing same |
ES2623475T3 (es) | 2010-05-11 | 2017-07-11 | Allergan, Inc. | Composiciones de porógenos, métodos para hacerlas y usos |
US11202853B2 (en) | 2010-05-11 | 2021-12-21 | Allergan, Inc. | Porogen compositions, methods of making and uses |
US8679279B2 (en) | 2010-11-16 | 2014-03-25 | Allergan, Inc. | Methods for creating foam-like texture |
US8546458B2 (en) | 2010-12-07 | 2013-10-01 | Allergan, Inc. | Process for texturing materials |
US8801782B2 (en) | 2011-12-15 | 2014-08-12 | Allergan, Inc. | Surgical methods for breast reconstruction or augmentation |
CA2895083A1 (en) | 2012-12-13 | 2014-06-19 | Allergan, Inc. | Device and method for making a variable surface breast implant |
US9539086B2 (en) | 2014-05-16 | 2017-01-10 | Allergan, Inc. | Soft filled prosthesis shell with variable texture |
US10092392B2 (en) | 2014-05-16 | 2018-10-09 | Allergan, Inc. | Textured breast implant and methods of making same |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5389829A (en) | 1991-09-27 | 1995-02-14 | Exar Corporation | Output limiter for class-D BICMOS hearing aid output amplifier |
JP3099164B2 (ja) | 1994-03-09 | 2000-10-16 | 日本プレシジョン・サーキッツ株式会社 | 抵抗網回路装置およびこれを用いた可変利得装置 |
US5804999A (en) * | 1995-08-09 | 1998-09-08 | Johnson Controls, Inc. | Appliance AC power control apparatus |
JPH1168488A (ja) | 1997-08-26 | 1999-03-09 | Nippon Precision Circuits Kk | 可変増幅利得回路および可変減衰利得回路 |
EP1049247B1 (en) * | 1999-04-27 | 2005-08-03 | STMicroelectronics S.r.l. | Class-D amplifier with enhanced bandwidth |
-
2003
- 2003-12-01 JP JP2003402173A patent/JP4452487B2/ja not_active Expired - Fee Related
-
2004
- 2004-11-29 US US10/999,172 patent/US7102432B2/en active Active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2021187288A1 (ja) * | 2020-03-16 | 2021-09-23 | ヤマハ株式会社 | D級アンプ |
Also Published As
Publication number | Publication date |
---|---|
US20050122169A1 (en) | 2005-06-09 |
US7102432B2 (en) | 2006-09-05 |
JP4452487B2 (ja) | 2010-04-21 |
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