JPS5617513A - Tuning indicating device - Google Patents
Tuning indicating deviceInfo
- Publication number
- JPS5617513A JPS5617513A JP9302679A JP9302679A JPS5617513A JP S5617513 A JPS5617513 A JP S5617513A JP 9302679 A JP9302679 A JP 9302679A JP 9302679 A JP9302679 A JP 9302679A JP S5617513 A JPS5617513 A JP S5617513A
- Authority
- JP
- Japan
- Prior art keywords
- turned
- display element
- lights
- transistors
- lighting
- 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
- H03J3/00—Continuous tuning
- H03J3/02—Details
- H03J3/12—Electrically-operated arrangements for indicating correct tuning
- H03J3/14—Visual indication, e.g. magic eye
Abstract
PURPOSE:To minimize the number of lighting display elements, by giving a successive change to the lighting of the display elements which light up as they approximates to the tuning point. CONSTITUTION:The signal applied to input terminal (a) increases as it comes close to the tuning point. And the reference voltage applied to input terminal (2) of arithmetic circuits IC1-IC5 is set to satisfy V1<V2<...<V5. As a result, transistors Q1-Q5 are turned on successively with a successive increment of the signal to be applied to terminal (a). For instance, display element D1 lights up when Q1 is turned on. Then transistors Q10, Q12 and Q14 are turned off when Q1 and Q2 are turned on. As a result, only display element D2 lights up. Thus only one unit of the display element is lit up to reduce the power consumption.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9302679A JPS5617513A (en) | 1979-07-20 | 1979-07-20 | Tuning indicating device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9302679A JPS5617513A (en) | 1979-07-20 | 1979-07-20 | Tuning indicating device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5617513A true JPS5617513A (en) | 1981-02-19 |
Family
ID=14070971
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9302679A Pending JPS5617513A (en) | 1979-07-20 | 1979-07-20 | Tuning indicating device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5617513A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20190040573A (en) | 2017-10-11 | 2019-04-19 | 한국철도기술연구원 | Apparatus for sensing location of autonomic vehicle and system for stopping right location using thereof |
-
1979
- 1979-07-20 JP JP9302679A patent/JPS5617513A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20190040573A (en) | 2017-10-11 | 2019-04-19 | 한국철도기술연구원 | Apparatus for sensing location of autonomic vehicle and system for stopping right location using thereof |
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