JPS61171319U - - Google Patents
Info
- Publication number
- JPS61171319U JPS61171319U JP5417185U JP5417185U JPS61171319U JP S61171319 U JPS61171319 U JP S61171319U JP 5417185 U JP5417185 U JP 5417185U JP 5417185 U JP5417185 U JP 5417185U JP S61171319 U JPS61171319 U JP S61171319U
- Authority
- JP
- Japan
- Prior art keywords
- agc
- circuit
- time constant
- rotational speed
- utility
- 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 claims description 2
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Control Of Amplification And Gain Control (AREA)
Description
図面はこの考案のＡＧＣ回路の一実施例を示し
、第１図はブロツク図、第２図及び第３図はそれ
ぞれＡＧＣ制御部を例示した結線図である。
２……ＲＦ増幅回路、５……ＩＦ増幅回路、６
……復調回路、７……ＡＧＣ制御部、７ａ，７ｂ
……ＡＧＣ時定数回路、８……速度検出回路、９
……チユーニングダイヤル。
The drawings show one embodiment of the AGC circuit of this invention, with FIG. 1 being a block diagram, and FIGS. 2 and 3 being wiring diagrams each illustrating an AGC control section. 2...RF amplifier circuit, 5...IF amplifier circuit, 6
... Demodulation circuit, 7 ... AGC control section, 7a, 7b
...AGC time constant circuit, 8...Speed detection circuit, 9
...Tuning dial.
Claims (1)
て発生させたＡＧＣ電圧によりＲＦ増幅回路およ
びＩＦ増幅回路の利得を制御するＡＧＣ制御部を
備えたＡＧＣ回路において、チユーニングダイヤ
ルの回転速度を検出する速度検出回路を前記ＡＧ
Ｃ制御部の時定数回路に接続し、該ダイヤルの回
転速度に応じてＡＧＣ時定数回路の時定数を可変
するようにしたことを特徴とするＡＧＣ回路。 (2) チユーニングダイヤルの回転速度に対応し
て時定数回路のＡＧＣ時定数を連続的に可変する
ようにしたことを特徴とする実用新案登録請求の
範囲第１項に記載のＡＧＣ回路。 (3) チユーニングダイヤルの所定の回転速度を
検出して時定数回路のＡＧＣ時定数を切り換える
ようにしたことを特徴とする実用新案登録請求の
範囲第１項に記載のＡＧＣ回路。[Claims for Utility Model Registration] (1) In an AGC circuit equipped with an AGC control section that controls the gains of an RF amplifier circuit and an IF amplifier circuit using an AGC voltage generated from the output of a demodulator circuit via an AGC time constant circuit. , a speed detection circuit for detecting the rotational speed of the tuning dial is connected to the AG
An AGC circuit, characterized in that the AGC circuit is connected to a time constant circuit of a C control section and is configured to vary the time constant of the AGC time constant circuit according to the rotational speed of the dial. (2) The AGC circuit according to claim 1 of the utility model registration, characterized in that the AGC time constant of the time constant circuit is continuously varied in accordance with the rotational speed of the tuning dial. (3) The AGC circuit according to claim 1 of the utility model registration, characterized in that the AGC time constant of the time constant circuit is switched by detecting a predetermined rotational speed of the tuning dial.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5417185U JPH0221797Y2 (en) | 1985-04-10 | 1985-04-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5417185U JPH0221797Y2 (en) | 1985-04-10 | 1985-04-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61171319U true JPS61171319U (en) | 1986-10-24 |
| JPH0221797Y2 JPH0221797Y2 (en) | 1990-06-12 |
Family
ID=30575691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5417185U Expired JPH0221797Y2 (en) | 1985-04-10 | 1985-04-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0221797Y2 (en) |
-
1985
- 1985-04-10 JP JP5417185U patent/JPH0221797Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0221797Y2 (en) | 1990-06-12 |