JPS615018U - Extension circuit for audio amplifier - Google Patents
Extension circuit for audio amplifierInfo
- Publication number
- JPS615018U JPS615018U JP8956484U JP8956484U JPS615018U JP S615018 U JPS615018 U JP S615018U JP 8956484 U JP8956484 U JP 8956484U JP 8956484 U JP8956484 U JP 8956484U JP S615018 U JPS615018 U JP S615018U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- audio amplifier
- extension circuit
- voltage
- parallel
- 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
Landscapes
- Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図はこの考案を説明するブロック図、第２図はこの
考案の考案の実施例を示す回路ブロック図、第３図は他
の実施例を示す回路ブロック図、第４図は実施例におけ
る特性図、第５図は従来例を示す回路ブ田ンク図、であ
る。
Ａ，Ａ２・・・共ニ増幅器、Ａ３・・・バンドパスフィ
ルタ兼増幅器、Ｒ・・・整流回路、Ｔ・・・時定数回路
、Ｂ，Ｂ２・・・共に帰還回路、１・・・帰還回路同調
方式選択増幅器、２・・・電圧制御可変抵抗回路。Fig. 1 is a block diagram explaining this invention, Fig. 2 is a circuit block diagram showing an embodiment of the invention, Fig. 3 is a circuit block diagram showing another embodiment, and Fig. 4 is a circuit block diagram showing an embodiment of the invention. The characteristic diagram and FIG. 5 are circuit block diagrams showing a conventional example. A, A2...Both amplifiers, A3...Band pass filter/amplifier, R...Rectifier circuit, T...Time constant circuit, B, B2...Both feedback circuits, 1...Feedback Circuit tuning method selection amplifier, 2...voltage controlled variable resistance circuit.
Claims (1)
可変抵抗回路を設けてなる並列Ｔ形ＲＣフィルタ回路を
帰還回路同調方式選択増幅器の帰還回路に用いて、入力
信号の低周波成分を整流した直流電圧によって制御した
ことを特徴とするオーディオ増幅器用伸長回路。A parallel T-type RC filter circuit in which a voltage-controlled variable resistance circuit is provided in series with a resistance element and a capacitance element connected in parallel is used in the feedback circuit of the feedback circuit tuning method selection amplifier to rectify the low frequency components of the input signal. An audio amplifier expansion circuit characterized in that it is controlled by DC voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8956484U JPS615018U (en) | 1984-06-15 | 1984-06-15 | Extension circuit for audio amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8956484U JPS615018U (en) | 1984-06-15 | 1984-06-15 | Extension circuit for audio amplifier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS615018U true JPS615018U (en) | 1986-01-13 |
| JPH0136347Y2 JPH0136347Y2 (en) | 1989-11-06 |
Family
ID=30643757
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8956484U Granted JPS615018U (en) | 1984-06-15 | 1984-06-15 | Extension circuit for audio amplifier |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS615018U (en) |
-
1984
- 1984-06-15 JP JP8956484U patent/JPS615018U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0136347Y2 (en) | 1989-11-06 |
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