JPS5526779A - Tuning indicator - Google Patents
Tuning indicatorInfo
- Publication number
- JPS5526779A JPS5526779A JP10029278A JP10029278A JPS5526779A JP S5526779 A JPS5526779 A JP S5526779A JP 10029278 A JP10029278 A JP 10029278A JP 10029278 A JP10029278 A JP 10029278A JP S5526779 A JPS5526779 A JP S5526779A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- tuning
- detection circuit
- indicator
- curve
- 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
Abstract
PURPOSE: To make it possible to perform tuning operation in FM broadcasting reception accurately by providing a circuit which detects the shift from the center of the S curve of the output of the detection circuit of a FM receiver and another circuit which lights an indicator by its output signal.
CONSTITUTION: The voltage signal of the S curve and that of an inverted S curve from FM detection circuit 4 are inputted to level difference detection circuit 9. In case that the receiving is out of tuning, a level difference, generated between two signals, is detected by circuit 9 to turn off gate circuit 10, thereby putting out light emitting diode 11, a tuning indicator. For tuning, gate 10 is turned ON to light the diode. When an output signal from intermediate frequency amplifier circuit 3 is below a fixed level, a signal from detection circuit 8 turns gate 10 OFF, forcing diode 11 to come OFF. As a result, accurate tuning can be seen at a look and the error lighting of the indicator between stations can be prevented.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10029278A JPS5526779A (en) | 1978-08-16 | 1978-08-16 | Tuning indicator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10029278A JPS5526779A (en) | 1978-08-16 | 1978-08-16 | Tuning indicator |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5526779A true JPS5526779A (en) | 1980-02-26 |
Family
ID=14270092
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10029278A Pending JPS5526779A (en) | 1978-08-16 | 1978-08-16 | Tuning indicator |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5526779A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5714520U (en) * | 1980-06-27 | 1982-01-25 |
-
1978
- 1978-08-16 JP JP10029278A patent/JPS5526779A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5714520U (en) * | 1980-06-27 | 1982-01-25 |
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