JPH02113173U - - Google Patents
Info
- Publication number
- JPH02113173U JPH02113173U JP2163589U JP2163589U JPH02113173U JP H02113173 U JPH02113173 U JP H02113173U JP 2163589 U JP2163589 U JP 2163589U JP 2163589 U JP2163589 U JP 2163589U JP H02113173 U JPH02113173 U JP H02113173U
- Authority
- JP
- Japan
- Prior art keywords
- power level
- audio signal
- level meter
- drive means
- double
- 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
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 230000005236 sound signal Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
Landscapes
- Amplifiers (AREA)
Description
第１図はこの考案の一つの実施例に係るパワー
レベルメータの回路図、第２図は第１図の動作を
説明する線図、第３図の図１乃至４は各々第１図
中の二重対数圧縮回路の変形例を示す回路図、第
４図は第１図中のクランプ回路と表示ドライバ回
路中のバイアス回路の変形例を示す回路図である
。第５図は従来のパワーレベルメータの一部を示
す回路図である。
主な符号の説明、１０：バツフア回路、２０，
２０Ａ，２０Ｂ，２０Ｃ，２０Ｄ：二重対数圧縮
回路、２２，２２Ａ，２２Ｂ，２２Ｃ，２２Ｄ：
オペアンプ、ＺＤ，ＺＤ１，ＺＤ２：ツエナーダ
イオード、Ｄ１０〜１９：ダイオード。
FIG. 1 is a circuit diagram of a power level meter according to one embodiment of this invention, FIG. 2 is a diagram explaining the operation of FIG. 1, and FIG. FIG. 4 is a circuit diagram showing a modification of the double logarithmic compression circuit. FIG. 4 is a circuit diagram showing a modification of the clamp circuit and the bias circuit in the display driver circuit in FIG. FIG. 5 is a circuit diagram showing part of a conventional power level meter. Explanation of main symbols, 10: Buffer circuit, 20,
20A, 20B, 20C, 20D: Double logarithmic compression circuit, 22, 22A, 22B, 22C, 22D:
Operational amplifier, ZD, ZD1, ZD2: Zener diode, D10-19: diode.
Claims (1)
デイオ信号に基づき、レベル指示手段の駆動を行
うドライブ手段を備えたパワーレベルメータにお
いて、 ドライブ手段の入力側に、オーデイオ信号を二
重対数圧縮する二重対数圧縮手段を設けたこと、 を特徴とするパワーレベルメータ。[Claim for Utility Model Registration] In a power level meter equipped with a drive means for driving a level indicating means based on an audio signal taken out from a stage subsequent to the volume control, the audio signal is input to the input side of the drive means in a double logarithm. A power level meter characterized by comprising a double logarithmic compression means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2163589U JPH02113173U (en) | 1989-02-27 | 1989-02-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2163589U JPH02113173U (en) | 1989-02-27 | 1989-02-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02113173U true JPH02113173U (en) | 1990-09-11 |
Family
ID=31239045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2163589U Pending JPH02113173U (en) | 1989-02-27 | 1989-02-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02113173U (en) |
-
1989
- 1989-02-27 JP JP2163589U patent/JPH02113173U/ja active Pending
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