JPS5783944A - Am stereophonic receiver - Google Patents

Am stereophonic receiver

Info

Publication number
JPS5783944A
JPS5783944A JP16055380A JP16055380A JPS5783944A JP S5783944 A JPS5783944 A JP S5783944A JP 16055380 A JP16055380 A JP 16055380A JP 16055380 A JP16055380 A JP 16055380A JP S5783944 A JPS5783944 A JP S5783944A
Authority
JP
Japan
Prior art keywords
circuit
stereophonic
output
frequency amplifying
detecting circuit
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
JP16055380A
Other languages
Japanese (ja)
Inventor
Akio Inoue
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.)
Sanyo Electric Co Ltd
Sanyo Denki Co Ltd
Original Assignee
Sanyo Electric Co Ltd
Sanyo Denki 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 Sanyo Electric Co Ltd, Sanyo Denki Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP16055380A priority Critical patent/JPS5783944A/en
Publication of JPS5783944A publication Critical patent/JPS5783944A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/86—Arrangements characterised by the broadcast information itself
    • H04H20/88—Stereophonic broadcast systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Stereo-Broadcasting Methods (AREA)

Abstract

PURPOSE:To reduce noises in detuning, by providing a limiter circuit to an AM stereophonic difference signal amplifier. CONSTITUTION:An AM stereophonic broadcast wave is received by an antenna 1 and applied to an envelope detecting circuit 6 through a high-frequency amplifying circuit 2, a mixing circuit 3 and an intermediate-frequency amplifying circuit 5 to obtain a sum signal L+R. Part of the output of the intermediate- frequency amplifying circuit 5 is passed through a limiter circuit 7, a frequency detecting circuit 8, an integral circuit 9, and a low-frequency amplifying circuit 10 to obtain a signal L-R, and both the signals are converted into signals L and R through an inverting amplifier 11 and adders 12 and 13. When a stereophonic broadcast is received and complete tuning is achieved, an AND circuit 18 generated a high-level output by the outputs of a tuning-band detecting circuit 15, a carrier detecting circuit 16, and a stereophonic pilot signal detecting circuit 17, and the transistor (TR)Q1 of a stereophonic/monaural switching circuit 20 turns off. In a detuning state, the TRQ1 turns on to generate a monaural output, but the output of the amplifier 10 is decreased by a limiter 23, reducing noises in switching.
JP16055380A 1980-11-13 1980-11-13 Am stereophonic receiver Pending JPS5783944A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16055380A JPS5783944A (en) 1980-11-13 1980-11-13 Am stereophonic receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16055380A JPS5783944A (en) 1980-11-13 1980-11-13 Am stereophonic receiver

Publications (1)

Publication Number Publication Date
JPS5783944A true JPS5783944A (en) 1982-05-26

Family

ID=15717473

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16055380A Pending JPS5783944A (en) 1980-11-13 1980-11-13 Am stereophonic receiver

Country Status (1)

Country Link
JP (1) JPS5783944A (en)

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