JPH0366224U - - Google Patents
Info
- Publication number
- JPH0366224U JPH0366224U JP12442989U JP12442989U JPH0366224U JP H0366224 U JPH0366224 U JP H0366224U JP 12442989 U JP12442989 U JP 12442989U JP 12442989 U JP12442989 U JP 12442989U JP H0366224 U JPH0366224 U JP H0366224U
- Authority
- JP
- Japan
- Prior art keywords
- audio signal
- converter
- power supply
- amplitude
- 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.)
- Pending
Links
Landscapes
- Analogue/Digital Conversion (AREA)
Description
第１図は本考案に係わるオーデイオアンプのブ
ロツク図、第２図は本考案におけるオーデイオ信
号と電源電圧の関係を示す波形図である。
１０……電力増幅器、１２……ピークデイテク
タ、１３……ＰＷＭ信号発生回路、１４……スイ
ツチング電源回路、１５……デイレイ用ＲＡＭ。
FIG. 1 is a block diagram of an audio amplifier according to the present invention, and FIG. 2 is a waveform diagram showing the relationship between audio signals and power supply voltage according to the present invention. 10... Power amplifier, 12... Peak detector, 13... PWM signal generation circuit, 14... Switching power supply circuit, 15... RAM for delay.
Claims (1)
給する電源電圧の振幅を制御するオーデイオアン
プにおいて、 所定時間間隔毎にデジタルオーデイオ信号の最
大振幅値を検出するピークデイテクタと、 前記最大振幅値に応じたパルス幅を有するＰＷ
Ｍ信号を発生するＰＷＭ信号発生回路と、 ＰＷＭ信号に基づいて電力増幅器に入力する電
源電圧の振幅を制御するスイツチング電源回路と
、 前記デジタルオーデイオ信号を所定時間遅延す
る遅延回路と、 遅延回路から出力されるデジタルオーデイオ信
号をＤＡ変換して電力増幅器に入力するＤＡ変換
器を有することを特徴とするオーデイオアンプ。[Claim for Utility Model Registration] In an audio amplifier that controls the amplitude of the power supply voltage supplied to the power amplifier according to the amplitude of the audio signal, a peak detector that detects the maximum amplitude value of the digital audio signal at predetermined time intervals; , PW having a pulse width according to the maximum amplitude value
A PWM signal generation circuit that generates the M signal; a switching power supply circuit that controls the amplitude of the power supply voltage input to the power amplifier based on the PWM signal; a delay circuit that delays the digital audio signal for a predetermined time; and an output from the delay circuit. What is claimed is: 1. An audio amplifier comprising a DA converter that converts a digital audio signal into a DA converter and inputs the DA converter to a power amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12442989U JPH0366224U (en) | 1989-10-24 | 1989-10-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12442989U JPH0366224U (en) | 1989-10-24 | 1989-10-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0366224U true JPH0366224U (en) | 1991-06-27 |
Family
ID=31672349
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12442989U Pending JPH0366224U (en) | 1989-10-24 | 1989-10-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0366224U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012060350A (en) * | 2010-09-08 | 2012-03-22 | Mitsubishi Electric Corp | Analog input device |
-
1989
- 1989-10-24 JP JP12442989U patent/JPH0366224U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012060350A (en) * | 2010-09-08 | 2012-03-22 | Mitsubishi Electric Corp | Analog input device |
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