JPS62133415U - - Google Patents
Info
- 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
Links
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 8
- 238000001514 detection method Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000005669 field effect Effects 0.000 description 1
Landscapes
- Amplifiers (AREA)
Description
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)
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:
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)
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)
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 |
-
1986
- 1986-02-18 JP JP1986021648U patent/JPH0520008Y2/ja not_active Expired - Lifetime
Patent Citations (2)
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)
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 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE3781277D1 (en) | DEVICE FOR THE RESOLUTION EXPANSION OF AN N-BIT-OHMSCH DIGITAL-ANALOG-CONVERTER TO A (N + P) -BIT-DIGITAL-ANALOG-CONVERTER. | |
JPS62133415U (en) | ||
JPS5916443B2 (en) | power amplifier | |
EP0217119A3 (en) | Method for digital-to-analogue conversion of digital information to bipolar analogue signals | |
JPS62129817U (en) | ||
JPH0115218Y2 (en) | ||
EP0292817A3 (en) | Circuit for obtaining bipolar digital signals | |
SU639139A1 (en) | Digital-analogue converter | |
JPS62121846U (en) | ||
JPS6111799Y2 (en) | ||
JPH0485175U (en) | ||
JPH0339929U (en) | ||
JPH01137706A (en) | Pulse step sound amplifier | |
SU600720A1 (en) | Digital-analogue converter | |
JPS56140402A (en) | Operating device | |
JPS6397116U (en) | ||
JPH0390135U (en) | ||
JPS6425238U (en) | ||
JPH0277931U (en) | ||
JPS5939925B2 (en) | digital to analog converter | |
JPS643222U (en) | ||
JPS62155529U (en) | ||
JPS6316727U (en) | ||
JPS6217249U (en) | ||
JPS6226941U (en) |