JPS5744206A - Output selecting circuit - Google Patents

Output selecting circuit

Info

Publication number
JPS5744206A
JPS5744206A JP55118790A JP11879080A JPS5744206A JP S5744206 A JPS5744206 A JP S5744206A JP 55118790 A JP55118790 A JP 55118790A JP 11879080 A JP11879080 A JP 11879080A JP S5744206 A JPS5744206 A JP S5744206A
Authority
JP
Japan
Prior art keywords
detector
oscillator
switch
point
common load
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
JP55118790A
Other languages
Japanese (ja)
Other versions
JPH0221041B2 (en
Inventor
Tatsumi Sumi
Shiro Mizutani
Yukihiko Miyamoto
Atsushi Ogawa
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
Trio KK
Kenwood KK
Panasonic Holdings Corp
Original Assignee
TRIO KENWOOD CORP
Trio KK
Kenwood KK
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 TRIO KENWOOD CORP, Trio KK, Kenwood KK, Matsushita Electric Industrial Co Ltd filed Critical TRIO KENWOOD CORP
Priority to JP55118790A priority Critical patent/JPS5744206A/en
Publication of JPS5744206A publication Critical patent/JPS5744206A/en
Publication of JPH0221041B2 publication Critical patent/JPH0221041B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/24—Signal processing not specific to the method of recording or reproducing; Circuits therefor for reducing noise

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Circuits Of Receivers In General (AREA)

Abstract

PURPOSE:To eliminate the shock noise that is produced when a selection switch is changed over, by connecting both an FM wave detector and a calibrating oscillator to the common load resistance with the same working point when the level is set in the magnetic recording of the broadcast. CONSTITUTION:An FM wave detector 1 and an oscillator 2 are selected by a switch 3', and the bias current is supplied from a constant voltage source 7 to a transistor (TR)7 or 12 for constant current source. Thus the working is controlled for both the detector 1 and the oscillator 2. The detector 1 and the oscillator 2 are constituted at the same working point and by sharing a common load resistance 13. When the oscillator 2 is selected by the switch 3', the oscillation signal of the oscillator 2 emerges at the common load point P. Thus the circuit is opened when viewed at the side of the detector 1, and the oscillation signal is delivered to an output terminal 16 via a TR15. When a detector 1 is selected by the switch 3', the aural signal of the detector 1 emerges at the point P to be delivered to the terminal 16 via the TR15. In such constitution, the shock noise which is produced when changing over a selection switch can be eliminated.
JP55118790A 1980-08-27 1980-08-27 Output selecting circuit Granted JPS5744206A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55118790A JPS5744206A (en) 1980-08-27 1980-08-27 Output selecting circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55118790A JPS5744206A (en) 1980-08-27 1980-08-27 Output selecting circuit

Publications (2)

Publication Number Publication Date
JPS5744206A true JPS5744206A (en) 1982-03-12
JPH0221041B2 JPH0221041B2 (en) 1990-05-11

Family

ID=14745152

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55118790A Granted JPS5744206A (en) 1980-08-27 1980-08-27 Output selecting circuit

Country Status (1)

Country Link
JP (1) JPS5744206A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5178713U (en) * 1974-12-18 1976-06-22
JPS5213708A (en) * 1975-07-23 1977-02-02 Seiko Epson Corp Telephone set

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5178713U (en) * 1974-12-18 1976-06-22
JPS5213708A (en) * 1975-07-23 1977-02-02 Seiko Epson Corp Telephone set

Also Published As

Publication number Publication date
JPH0221041B2 (en) 1990-05-11

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