JPS5526779A - Tuning indicator - Google Patents

Tuning indicator

Info

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
Application number
JP10029278A
Other languages
Japanese (ja)
Inventor
Yoshio Horiike
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 JP10029278A priority Critical patent/JPS5526779A/en
Publication of JPS5526779A publication Critical patent/JPS5526779A/en
Pending legal-status Critical Current

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
JP10029278A 1978-08-16 1978-08-16 Tuning indicator Pending JPS5526779A (en)

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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5714520U (en) * 1980-06-27 1982-01-25

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5714520U (en) * 1980-06-27 1982-01-25

Similar Documents

Publication Publication Date Title
EP0316879A3 (en) Radio with broad band automatic gain control circuit
JPS5314A (en) Heterodyne receiver
JPS5526779A (en) Tuning indicator
JPS5560328A (en) Tuning-point detection circuit of am radio receiver
JPS5550745A (en) Muting signal generation circuit for fm receiver
SE8003557L (en) The intermediate frequency detection circuit
JPS5438701A (en) Automatic channel selector for electronic tuner
JPS5651119A (en) Indicating device for receiver
JPS5232609A (en) Receiver
JPS5742245A (en) Am stereo receiver
JPS5526749A (en) Fm-am broadcast receiver
JPS5741043A (en) Frequency modulation radio receiver
JPS5590146A (en) Optical transmitter
JPS51130112A (en) Signal probing receiver
JPS5752219A (en) Electronic tuner
SE8105725L (en) AUTOMATIC SOCKET CONTROL SYSTEM FOR RADIO RECEIVERS
JPS52115101A (en) Fm receiver
JPS56117432A (en) Reception detecting circuit
JPS52144247A (en) Minimum/maximum level detection circuit
JPS5550726A (en) Tuning indicator for fm receiver
JPS5363083A (en) Detecting circuit for minute changing quantity
JPS5379403A (en) Tuning indication circuit
JPS5748674A (en) Radio receiver
JPS5612150A (en) Tuning indicator
JPS57202136A (en) Muting circuit