JPS5457817A - Receiver - Google Patents
ReceiverInfo
- Publication number
- JPS5457817A JPS5457817A JP12428677A JP12428677A JPS5457817A JP S5457817 A JPS5457817 A JP S5457817A JP 12428677 A JP12428677 A JP 12428677A JP 12428677 A JP12428677 A JP 12428677A JP S5457817 A JPS5457817 A JP S5457817A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- voltage
- output
- frequency
- 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.)
- Pending
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
- H03J7/18—Automatic scanning over a band of frequencies
- H03J7/20—Automatic scanning over a band of frequencies where the scanning is accomplished by varying the electrical characteristics of a non-mechanically adjustable element
Landscapes
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
Abstract
PURPOSE:To obtain a receiver for radio signals of a radio set, television set, etc., which simplifies channel selections. CONSTITUTION:This receiver has trigger circuit 9 which generates a DC signal during the reception of signals at a certain frequency, time-constant circuit 10 which generates its output when applied with the DC signal of circuit 9 and stops generating its output temporarily after a constant time, frequency-varying voltage generating circuit 11 which causes its voltage if rising up to a certain value to drop down to its previous voltage and stops the rise in the voltage mentioned above temporarily during the application of the DC signal of circuit 9, change-over switch S1 which connects the output of circuit 9 to either circuit 10 or 11, and grounding switch S2 which grounds it. Then, the output of circuit 11 is made into a sweep voltage which varies the reception frequency variable reactance element 11 of the high- frequency circuit and local oscillation circuit.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12428677A JPS5457817A (en) | 1977-10-17 | 1977-10-17 | Receiver |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12428677A JPS5457817A (en) | 1977-10-17 | 1977-10-17 | Receiver |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5457817A true JPS5457817A (en) | 1979-05-10 |
Family
ID=14881568
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12428677A Pending JPS5457817A (en) | 1977-10-17 | 1977-10-17 | Receiver |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5457817A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6282810A (en) * | 1985-10-08 | 1987-04-16 | Matsushita Electric Ind Co Ltd | Channel selecting device for television |
-
1977
- 1977-10-17 JP JP12428677A patent/JPS5457817A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6282810A (en) * | 1985-10-08 | 1987-04-16 | Matsushita Electric Ind Co Ltd | Channel selecting device for television |
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