JPS5617513A - Tuning indicating device - Google Patents

Tuning indicating device

Info

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
Application number
JP9302679A
Other languages
Japanese (ja)
Inventor
Katsuhiko Miyanaga
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP9302679A priority Critical patent/JPS5617513A/en
Publication of JPS5617513A publication Critical patent/JPS5617513A/en
Pending legal-status Critical Current

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.
JP9302679A 1979-07-20 1979-07-20 Tuning indicating device Pending JPS5617513A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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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