JPS5933319U - automatic gain control circuit - Google Patents
automatic gain control circuitInfo
- Publication number
- JPS5933319U JPS5933319U JP12804782U JP12804782U JPS5933319U JP S5933319 U JPS5933319 U JP S5933319U JP 12804782 U JP12804782 U JP 12804782U JP 12804782 U JP12804782 U JP 12804782U JP S5933319 U JPS5933319 U JP S5933319U
- Authority
- JP
- Japan
- Prior art keywords
- control circuit
- gain control
- automatic gain
- level
- 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
Landscapes
- 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図は先行技術のブロック回路図、第２図はその具体
的な電気回路図、第３図および第４図は他の先行技術の
ブロック回路図、第５図は第３図の具体的な電気回路図
、第６図は本考案の一実施例の電気回路図、第７図は本
考案の他の実施例の電気回路図である。
２１．５１・・・自動利得制御回路、２２・・・電圧増
幅回路、２３・・・減衰回路、２４・・・電圧増幅／イ
ンピーダンス変換回路、２５・・・レベル検出回路、２
６．３３．３４，３６．５３・・・トランジスター、
′２７〜３０． ３７． ３Ｂ、 ４５． ４６．
５４・・・抵抗、３２，３５，３９，４１．４２−・
・コンデンサ、４３．４４・・・ダイオード、５２・・
・インピーダンス変換回路。Figure 1 is a block circuit diagram of the prior art, Figure 2 is a specific electrical circuit diagram thereof, Figures 3 and 4 are block circuit diagrams of other prior art, and Figure 5 is a concrete example of Figure 3. FIG. 6 is an electrical circuit diagram of one embodiment of the present invention, and FIG. 7 is an electrical circuit diagram of another embodiment of the present invention. 21.51... Automatic gain control circuit, 22... Voltage amplification circuit, 23... Attenuation circuit, 24... Voltage amplification/impedance conversion circuit, 25... Level detection circuit, 2
6.33.34, 36.53...transistor,
'27-30. 37. 3B, 45. 46.
54...Resistance, 32, 35, 39, 41.42-.
・Capacitor, 43.44...Diode, 52...
・Impedance conversion circuit.
Claims (1)
ダンスを変化させることにより、他方の入力に与えられ
る信号を減衰して一定レベルとする減衰回路から一定レ
ベルの信号を能動素子に与えて出力するとともに、その
出力信号の一部をレベル検出回路を介して前記一方の入
力に与えるようにした自動利得制御回路において、 前記能動素子の両端には、第１の抵抗および第１の抵抗
よりも十分に犬なる抵抗値を有する第２の抵抗をそ井そ
れ直列に接続し、能動素子と第２の抵抗との接続点から
の増幅されたレベルの信号を前記レベル検出回路に与え
るようにしたことを特徴とする自動利得制御回路。[Claims for Utility Model Registration] A signal of a constant level is obtained from an attenuation circuit that attenuates the signal applied to the other input to a constant level by changing the impedance according to the level of the signal applied to one input. In the automatic gain control circuit, the signal is supplied to an active element for output, and a part of the output signal is supplied to the one input via a level detection circuit. A second resistor having a resistance value sufficiently higher than that of the first resistor is connected in series, and the amplified level signal from the connection point between the active element and the second resistor is detected as the level. An automatic gain control circuit characterized in that the automatic gain control circuit is configured to provide a gain control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12804782U JPS5933319U (en) | 1982-08-24 | 1982-08-24 | automatic gain control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12804782U JPS5933319U (en) | 1982-08-24 | 1982-08-24 | automatic gain control circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5933319U true JPS5933319U (en) | 1984-03-01 |
| JPH021950Y2 JPH021950Y2 (en) | 1990-01-18 |
Family
ID=30290610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12804782U Granted JPS5933319U (en) | 1982-08-24 | 1982-08-24 | automatic gain control circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5933319U (en) |
-
1982
- 1982-08-24 JP JP12804782U patent/JPS5933319U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH021950Y2 (en) | 1990-01-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS58135121U (en) | level shift circuit | |
| JPS58166115U (en) | Amplifier circuit with two transistors | |
| JPS5933319U (en) | automatic gain control circuit | |
| JPS5821866U (en) | level detection device | |
| JPS5840925U (en) | gain control circuit | |
| JPS58155153U (en) | optical receiver | |
| JPS599619U (en) | amplifier circuit | |
| JPS5813718U (en) | variable gain amplifier circuit | |
| JPS59127324U (en) | variable gain circuit | |
| JPS5819545U (en) | Automatic transmission output control circuit | |
| JPS6147532U (en) | Noise signal suppression circuit | |
| JPS6137626U (en) | variable resistance circuit | |
| JPS59114619U (en) | Amplifier circuit with variable gain function | |
| JPS5834433U (en) | AFT signal detection circuit | |
| JPS58111514U (en) | Voltage controlled amplifier circuit | |
| JPS5917618U (en) | Muting circuit | |
| JPS60145727U (en) | automatic gain control circuit | |
| JPS5925824U (en) | nonlinear amplifier circuit | |
| JPS6130U (en) | infrared detection circuit | |
| JPS5834414U (en) | Power amplifier current limit circuit | |
| JPS5893013U (en) | Output transistor current limit circuit | |
| JPS5973821U (en) | electronic volume device | |
| JPS5836409U (en) | constant voltage circuit | |
| JPS59187249U (en) | optical digital signal receiver | |
| JPS59144916U (en) | Tone control circuit |