JPS5580942A - Stereo demodulator circuit - Google Patents

Stereo demodulator circuit

Info

Publication number
JPS5580942A
JPS5580942A JP15564478A JP15564478A JPS5580942A JP S5580942 A JPS5580942 A JP S5580942A JP 15564478 A JP15564478 A JP 15564478A JP 15564478 A JP15564478 A JP 15564478A JP S5580942 A JPS5580942 A JP S5580942A
Authority
JP
Japan
Prior art keywords
voltage
terminal
current
sucking
stereo
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
JP15564478A
Other languages
Japanese (ja)
Inventor
Masami Onishi
Ichiro Ikegami
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 JP15564478A priority Critical patent/JPS5580942A/en
Publication of JPS5580942A publication Critical patent/JPS5580942A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H40/00—Arrangements specially adapted for receiving broadcast information
    • H04H40/18—Arrangements characterised by circuits or components specially adapted for receiving
    • H04H40/27—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95
    • H04H40/36—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95 specially adapted for stereophonic broadcast receiving
    • H04H40/45—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95 specially adapted for stereophonic broadcast receiving for FM stereophonic broadcast systems receiving
    • H04H40/81—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95 specially adapted for stereophonic broadcast receiving for FM stereophonic broadcast systems receiving for stereo-monaural switching
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/1646—Circuits adapted for the reception of stereophonic signals

Landscapes

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

Abstract

PURPOSE:To give the forced switching to the monaural action after detecting that the output voltage of the constant voltage circuit which generates the fixed voltage within the range of the normal power voltage has become less than the prescribed level. CONSTITUTION:Transistor Tr1 can secure the sufficient ON state when the voltage of output terminal 8 in constant voltage circuit 12 is at the prescribed level. Accordingly, both Tr2 and Tr3 are cut off, and the sucking current sent from current sucking terminal 10 is 0. Then Tr1 is cut off suddenly when the voltage of terminal 8 becomes less than the prescribed level. As a result, both Tr2 and Tr3 are turned on, and thus the current is sucked through terminal 10. When the sucking starts, the input current of stereo switch 19 becomes nonexistent regardless of the state of switch 18. Thus stereo pilot lamp 22 is turned off, and stereo decoder 20 is switches to the monaural action.
JP15564478A 1978-12-14 1978-12-14 Stereo demodulator circuit Pending JPS5580942A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15564478A JPS5580942A (en) 1978-12-14 1978-12-14 Stereo demodulator circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15564478A JPS5580942A (en) 1978-12-14 1978-12-14 Stereo demodulator circuit

Publications (1)

Publication Number Publication Date
JPS5580942A true JPS5580942A (en) 1980-06-18

Family

ID=15610469

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15564478A Pending JPS5580942A (en) 1978-12-14 1978-12-14 Stereo demodulator circuit

Country Status (1)

Country Link
JP (1) JPS5580942A (en)

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