JPS6088625U - Temperature compensated automatic level control circuit - Google Patents
Temperature compensated automatic level control circuitInfo
- Publication number
- JPS6088625U JPS6088625U JP18087983U JP18087983U JPS6088625U JP S6088625 U JPS6088625 U JP S6088625U JP 18087983 U JP18087983 U JP 18087983U JP 18087983 U JP18087983 U JP 18087983U JP S6088625 U JPS6088625 U JP S6088625U
- Authority
- JP
- Japan
- Prior art keywords
- reference voltage
- operational amplifier
- output
- control circuit
- level control
- 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
- Amplifiers (AREA)
- Control Of Amplification And Gain Control (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、従来用いられている自動レベル制御回路の回
路図、第２図は本考案の一実施例による自動レベル制御
回路の回路図である。
図において、１はＲＦ増幅器、２は検出回路、゛ ３は
χ増幅器、４は誤差検出回路、５は可変抵抗器、６は入
力端子、７は出力端子、８は演算増幅器（オペアンプ）
、９はツェナーダイオード、１０は抵抗、１１は温度補
償用抵抗器、１２は抵抗、２０は基準電圧発生回路であ
る。FIG. 1 is a circuit diagram of a conventional automatic level control circuit, and FIG. 2 is a circuit diagram of an automatic level control circuit according to an embodiment of the present invention. In the figure, 1 is an RF amplifier, 2 is a detection circuit, 3 is a χ amplifier, 4 is an error detection circuit, 5 is a variable resistor, 6 is an input terminal, 7 is an output terminal, and 8 is an operational amplifier.
, 9 is a Zener diode, 10 is a resistor, 11 is a temperature compensation resistor, 12 is a resistor, and 20 is a reference voltage generating circuit.
Claims (1)
ル制御回路であって、前記出力信号のレベルを検出する
出力レベル検出回路と、一定にすべき出力信号レベルに
比例する基準電圧を発生する基準電圧発生回路と、前記
出力レベル検出回路の出力電圧と前記基準電圧発生回路
からの基準電圧とを比較し、誤差電圧を発生する誤差検
出回路とを有し、該誤差検出回路の出力電圧により前記
被制御系を制御するようにした前記自動レベル制御回路
において、前記基準電圧発生回路は、前記基準電圧を出
力する演算増幅器と、該演算増幅器の出力端子及び反転
入力端子間に接続された、電源電圧変動による前記基準
電圧の変動を防ぐためのツェナーダイオードと、前記演
算増幅器の前記反転入力端子と接地との間に接続された
第１の抵抗と、前記演算増幅器の前記出力端子及び非反
転入力端子間に接続された、温度補償を行なうための第
２の抵抗器と、前記演算増幅器の前記非反転入力端子と
接地との間に接続された第３の抵抗とを有することを特
徴とする温度補償形自動レベル制御回路。An automatic level control circuit that maintains a constant level of an output signal of a controlled system, comprising an output level detection circuit that detects the level of the output signal, and a reference voltage that is proportional to the output signal level that should be kept constant. a reference voltage generation circuit; and an error detection circuit that compares the output voltage of the output level detection circuit with the reference voltage from the reference voltage generation circuit and generates an error voltage; In the automatic level control circuit configured to control the controlled system, the reference voltage generation circuit is connected between an operational amplifier that outputs the reference voltage, and an output terminal and an inverting input terminal of the operational amplifier. a Zener diode for preventing fluctuations in the reference voltage due to power supply voltage fluctuations; a first resistor connected between the inverting input terminal of the operational amplifier and ground; and a first resistor connected between the output terminal of the operational amplifier and the non-inverting input terminal. A second resistor for temperature compensation is connected between the input terminals, and a third resistor is connected between the non-inverting input terminal of the operational amplifier and ground. Temperature compensated automatic level control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18087983U JPS6088625U (en) | 1983-11-25 | 1983-11-25 | Temperature compensated automatic level control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18087983U JPS6088625U (en) | 1983-11-25 | 1983-11-25 | Temperature compensated automatic level control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6088625U true JPS6088625U (en) | 1985-06-18 |
Family
ID=30392080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18087983U Pending JPS6088625U (en) | 1983-11-25 | 1983-11-25 | Temperature compensated automatic level control circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6088625U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03235507A (en) * | 1990-02-13 | 1991-10-21 | Asahi Optical Co Ltd | Amplifier device |
-
1983
- 1983-11-25 JP JP18087983U patent/JPS6088625U/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03235507A (en) * | 1990-02-13 | 1991-10-21 | Asahi Optical Co Ltd | Amplifier device |
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