JPS5538792A - Radio receiver with tuning display - Google Patents

Radio receiver with tuning display

Info

Publication number
JPS5538792A
JPS5538792A JP11348278A JP11348278A JPS5538792A JP S5538792 A JPS5538792 A JP S5538792A JP 11348278 A JP11348278 A JP 11348278A JP 11348278 A JP11348278 A JP 11348278A JP S5538792 A JPS5538792 A JP S5538792A
Authority
JP
Japan
Prior art keywords
circuit
diode
output
agc
tuning
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
Application number
JP11348278A
Other languages
Japanese (ja)
Other versions
JPS5917907B2 (en
Inventor
Yoshinori Matsumori
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.)
Tokyo Sanyo Electric Co Ltd
Sanyo Electric Co Ltd
Original Assignee
Tokyo Sanyo Electric Co Ltd
Tottori Sanyo Electric Co Ltd
Sanyo Electric 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 Tokyo Sanyo Electric Co Ltd, Tottori Sanyo Electric Co Ltd, Sanyo Electric Co Ltd filed Critical Tokyo Sanyo Electric Co Ltd
Priority to JP11348278A priority Critical patent/JPS5917907B2/en
Publication of JPS5538792A publication Critical patent/JPS5538792A/en
Publication of JPS5917907B2 publication Critical patent/JPS5917907B2/en
Expired 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 reduce the power consumption for the receiver using the cell as the power source by actuating the light emitting diode in the detuning state not in the tuning state. CONSTITUTION:The reception wave is detectes at diode 4 via antenna 1, high frequency circuit 2 and intermediate frequency circuit 3 each, and the detection output is supplied to low frequency circuit 6 via variable resistance 5. The output of circuit 6 is sent to earphone jack 7. Resistance 31 feeds the output of diode 4 back to circuit 3 to function to form part of the AGC circuit which controls the gain of circuit 3. When the reception signal is intensified through tuning, the output of diode 4 features the negative potential. Thus the AGC operates to lower the gain of circuit 3. In this instant, Tr 8 is turned off with no emission of light emitting diode 9 because the base of Tr 8 features the negative load. At the detuning time, the AGC does not operate contrarily with the base of Tr 8 featuting the positive potential, and as a result Tr 8 is turned of with emission secured for diode 9. At the same time, contact 71 of jack 7 lights up diode 9 to alarm for detachment of the plug.
JP11348278A 1978-09-12 1978-09-12 Radio receiver with tuning display Expired JPS5917907B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11348278A JPS5917907B2 (en) 1978-09-12 1978-09-12 Radio receiver with tuning display

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11348278A JPS5917907B2 (en) 1978-09-12 1978-09-12 Radio receiver with tuning display

Publications (2)

Publication Number Publication Date
JPS5538792A true JPS5538792A (en) 1980-03-18
JPS5917907B2 JPS5917907B2 (en) 1984-04-24

Family

ID=14613394

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11348278A Expired JPS5917907B2 (en) 1978-09-12 1978-09-12 Radio receiver with tuning display

Country Status (1)

Country Link
JP (1) JPS5917907B2 (en)

Also Published As

Publication number Publication date
JPS5917907B2 (en) 1984-04-24

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