JPS5784617A - Potentiometer preset type electronic tuning receiver - Google Patents
Potentiometer preset type electronic tuning receiverInfo
- Publication number
- JPS5784617A JPS5784617A JP16046080A JP16046080A JPS5784617A JP S5784617 A JPS5784617 A JP S5784617A JP 16046080 A JP16046080 A JP 16046080A JP 16046080 A JP16046080 A JP 16046080A JP S5784617 A JPS5784617 A JP S5784617A
- Authority
- JP
- Japan
- Prior art keywords
- switch
- band
- capacitor
- type electronic
- preset type
- 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
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
- H03J7/02—Automatic frequency control
Landscapes
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
Abstract
PURPOSE:To enable accurate reception even if the tuning frequency is greatly shifted, by spreading IF band temporarily and extending the pull-in range of AFC, when a preset channel is switched. CONSTITUTION:A band switching control circuit 10 is a series circuit of a capacitor C22 and a switch SW0 provided in parallel with a capacitor Cc1, and when the switch SW0 is opened, the band-pass characteristics is narrow due to the coupling capacitor Cc1 only. When the switch SW0 is closed, since the coupling capacitor is (Cc1+Cc2) to be a close coupling, the band-pass characteristics of a filter 3 is extended. Thus, through the control that the switch SW0 is closed at channel switching and it is opened at the reception after the channel selection, accurate reception can be made even if the tuning frequency is greatly shifted at the preset channel switching.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16046080A JPS5784617A (en) | 1980-11-14 | 1980-11-14 | Potentiometer preset type electronic tuning receiver |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16046080A JPS5784617A (en) | 1980-11-14 | 1980-11-14 | Potentiometer preset type electronic tuning receiver |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5784617A true JPS5784617A (en) | 1982-05-27 |
JPS6230535B2 JPS6230535B2 (en) | 1987-07-02 |
Family
ID=15715413
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16046080A Granted JPS5784617A (en) | 1980-11-14 | 1980-11-14 | Potentiometer preset type electronic tuning receiver |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5784617A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5120631A (en) * | 1974-08-14 | 1976-02-19 | Matsushita Electric Ind Co Ltd |
-
1980
- 1980-11-14 JP JP16046080A patent/JPS5784617A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5120631A (en) * | 1974-08-14 | 1976-02-19 | Matsushita Electric Ind Co Ltd |
Also Published As
Publication number | Publication date |
---|---|
JPS6230535B2 (en) | 1987-07-02 |
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