JPS56149108A - Automatic gain control voltage outputting circuit - Google Patents
Automatic gain control voltage outputting circuitInfo
- Publication number
- JPS56149108A JPS56149108A JP5246780A JP5246780A JPS56149108A JP S56149108 A JPS56149108 A JP S56149108A JP 5246780 A JP5246780 A JP 5246780A JP 5246780 A JP5246780 A JP 5246780A JP S56149108 A JPS56149108 A JP S56149108A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- output
- detection output
- led out
- out via
- 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
- 238000001514 detection method Methods 0.000 abstract 5
- 230000003321 amplification Effects 0.000 abstract 2
- 238000003199 nucleic acid amplification method Methods 0.000 abstract 2
- 230000002194 synthesizing effect Effects 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
Landscapes
- Control Of Amplification And Gain Control (AREA)
Abstract
PURPOSE:To obtain an AGC voltage suitable for IC-implementation by making the amplification factor to the detection output of the 1st signal level detecting circuit less than that to the detection output of the 2nd signal level detecting circuit with regard to both the detecting circuits of a detection output synthesizing circuit. CONSTITUTION:Currents that correspond to signal amplitude values detected by signal level detecting circuits 14 and 15 are applied to AGC output circuit 16, which amplifies them; the output of circuit 16 is led out via AGC voltage output pin 17 and applied to resistance 18 as a load. At this time, circuit 15 detects the amplitude of the output signal of 1st-stage limiter amplifier 8, and the extracted current is amplified by circuit 16 and led out via pin 17. The gain that the current extracted by detecting the signal amplitude applied to input pin 7 by circuit 14 is amplified by circuit 16 and led out via pin 17 can greatly be increased above the gain concerning circuit 15 by making the amplification factor to the detection output of circuit 14 less than that to the detection output of circuit 15. Thus, the AGC voltage extracting circuit having the circuit constitution suitable for IC-implementation can be obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5246780A JPS56149108A (en) | 1980-04-21 | 1980-04-21 | Automatic gain control voltage outputting circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5246780A JPS56149108A (en) | 1980-04-21 | 1980-04-21 | Automatic gain control voltage outputting circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56149108A true JPS56149108A (en) | 1981-11-18 |
| JPS6230530B2 JPS6230530B2 (en) | 1987-07-02 |
Family
ID=12915517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5246780A Granted JPS56149108A (en) | 1980-04-21 | 1980-04-21 | Automatic gain control voltage outputting circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56149108A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5956855U (en) * | 1982-10-01 | 1984-04-13 | アルパイン株式会社 | AGC circuit |
| JPS6090409A (en) * | 1983-10-25 | 1985-05-21 | Matsushita Electric Ind Co Ltd | Power amplifier device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5011009A (en) * | 1973-05-29 | 1975-02-04 |
-
1980
- 1980-04-21 JP JP5246780A patent/JPS56149108A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5011009A (en) * | 1973-05-29 | 1975-02-04 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5956855U (en) * | 1982-10-01 | 1984-04-13 | アルパイン株式会社 | AGC circuit |
| JPS6090409A (en) * | 1983-10-25 | 1985-05-21 | Matsushita Electric Ind Co Ltd | Power amplifier device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6230530B2 (en) | 1987-07-02 |
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