JPS5526749A - Fm-am broadcast receiver - Google Patents

Fm-am broadcast receiver

Info

Publication number
JPS5526749A
JPS5526749A JP9966478A JP9966478A JPS5526749A JP S5526749 A JPS5526749 A JP S5526749A JP 9966478 A JP9966478 A JP 9966478A JP 9966478 A JP9966478 A JP 9966478A JP S5526749 A JPS5526749 A JP S5526749A
Authority
JP
Japan
Prior art keywords
coil
circuit
detection circuit
phase shifter
curve signal
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
JP9966478A
Other languages
Japanese (ja)
Inventor
Morio Kumagai
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.)
TRIO KENWOOD CORP
Kenwood KK
Original Assignee
TRIO KENWOOD CORP
Kenwood KK
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 TRIO KENWOOD CORP, Kenwood KK filed Critical TRIO KENWOOD CORP
Priority to JP9966478A priority Critical patent/JPS5526749A/en
Publication of JPS5526749A publication Critical patent/JPS5526749A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D5/00—Circuits for demodulating amplitude-modulated or angle-modulated oscillations at will

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Circuits Of Receivers In General (AREA)

Abstract

PURPOSE:To simplify circuit constitution by eliminating the need for an AM quadrature detection circuit for obtaining a S curve signal, by making use of a quandrature detection circuit as a FM detection circuit even in AM broadcast reception. CONSTITUTION:In FM broadcast receltion, coil 22 is shorted via change-over switch 25 and phase shifter 17 serves appropriately as a FM phase shifter composed to coil 21 of FM quadrature detection circuit 16 and tuning circuit 23, so that an FM detection output and S curve signal output will appear at output terminal OUT. In AM broadcast reception, the shout of coil 22 is released by switch 25 and since inductance L21 of coil 21 is less than L22 of coil 22, the application of L21 and L22 causes no problem; since tuning circuit 23 can be ignored in terms of AM intermediate frequency, coils 21 and 22 and circuit 24 operate as phase shifter 17 of quadrature detection circuit 16, thereby obtaining a S curve signal of AM at output terminal OUT.
JP9966478A 1978-08-16 1978-08-16 Fm-am broadcast receiver Pending JPS5526749A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9966478A JPS5526749A (en) 1978-08-16 1978-08-16 Fm-am broadcast receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9966478A JPS5526749A (en) 1978-08-16 1978-08-16 Fm-am broadcast receiver

Publications (1)

Publication Number Publication Date
JPS5526749A true JPS5526749A (en) 1980-02-26

Family

ID=14253298

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9966478A Pending JPS5526749A (en) 1978-08-16 1978-08-16 Fm-am broadcast receiver

Country Status (1)

Country Link
JP (1) JPS5526749A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56152320A (en) * 1980-04-25 1981-11-25 Murata Mfg Co Ltd Am station detecting circuit for electronic tuning tuner
JPS5894224A (en) * 1981-11-30 1983-06-04 Nec Home Electronics Ltd Frequency stabilizing circuit and simple tuning displaying circuit of am receiver
US4388496A (en) * 1980-08-11 1983-06-14 Trio Kabushiki Kaisha FM/AM Stereo receiver

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56152320A (en) * 1980-04-25 1981-11-25 Murata Mfg Co Ltd Am station detecting circuit for electronic tuning tuner
US4388496A (en) * 1980-08-11 1983-06-14 Trio Kabushiki Kaisha FM/AM Stereo receiver
JPS5894224A (en) * 1981-11-30 1983-06-04 Nec Home Electronics Ltd Frequency stabilizing circuit and simple tuning displaying circuit of am receiver

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