SE8104323L - RADIORECEIVER - Google Patents

RADIORECEIVER

Info

Publication number
SE8104323L
SE8104323L SE8104323A SE8104323A SE8104323L SE 8104323 L SE8104323 L SE 8104323L SE 8104323 A SE8104323 A SE 8104323A SE 8104323 A SE8104323 A SE 8104323A SE 8104323 L SE8104323 L SE 8104323L
Authority
SE
Sweden
Prior art keywords
circuit
control circuit
volume control
muting signal
voltage
Prior art date
Application number
SE8104323A
Other languages
Unknown language ( )
Swedish (sv)
Inventor
K Watanabe
S Yamada
Original Assignee
Clarion 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 Clarion Co Ltd filed Critical Clarion Co Ltd
Publication of SE8104323L publication Critical patent/SE8104323L/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3005—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/34—Muting amplifier when no signal is present or when only weak signals are present, or caused by the presence of noise signals, e.g. squelch systems
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/34—Muting amplifier when no signal is present or when only weak signals are present, or caused by the presence of noise signals, e.g. squelch systems
    • H03G3/348—Muting in response to a mechanical action or to power supply variations, e.g. during tuning; Click removal circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Control Of Amplification And Gain Control (AREA)
  • Noise Elimination (AREA)
  • Circuits Of Receivers In General (AREA)

Abstract

A radio receiver which comprises an electronic volume control circuit (6), an audio amplifier (7) to be controlled by the volume control circuit, a control voltage generating circuit (20) for generating a voltage (V) to control the volume control circuit and a muting signal source. The control voltage generating circuit is arranged to generate a voltage to make the attenuation of the volume control circuit largest when a muting signal is applied to the control circuit from the muting signal source during tuning operation and accordingly to apply the control voltage to the volume control circuit. The muting signal may be applied to a transistor (Q) in the control voltage generating circuit (20) through a delay circuit (R1, C1 Fig. 5). <IMAGE>
SE8104323A 1980-07-14 1981-07-13 RADIORECEIVER SE8104323L (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9803480U JPS5723009U (en) 1980-07-14 1980-07-14

Publications (1)

Publication Number Publication Date
SE8104323L true SE8104323L (en) 1982-01-15

Family

ID=14208740

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8104323A SE8104323L (en) 1980-07-14 1981-07-13 RADIORECEIVER

Country Status (6)

Country Link
JP (1) JPS5723009U (en)
DE (1) DE3127815A1 (en)
FR (1) FR2486736A1 (en)
GB (1) GB2081541A (en)
NL (1) NL8103330A (en)
SE (1) SE8104323L (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3537837C1 (en) * 1985-10-24 1987-02-19 Philips Patentverwaltung Circuit arrangement for noise suppression with minimum volume of a low frequency amplifier
EP0590706A1 (en) * 1992-10-01 1994-04-06 Delco Electronics Corporation Amplifier apparatus
US5440702A (en) * 1992-10-16 1995-08-08 Delco Electronics Corporation Data processing system with condition code architecture for executing single instruction range checking and limiting operations

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3882400A (en) * 1972-11-27 1975-05-06 Sony Corp Broadcast receiver
DE2547038C3 (en) * 1975-10-21 1978-10-12 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Method and arrangement for reducing reception interference in radio receivers caused by switching processes
US4207530A (en) * 1977-09-12 1980-06-10 Motorola, Inc. Electrically tunable inductor and method
JPS5535584A (en) * 1978-09-06 1980-03-12 Matsushita Electric Ind Co Ltd Sound volume controller

Also Published As

Publication number Publication date
FR2486736A1 (en) 1982-01-15
JPS5723009U (en) 1982-02-05
GB2081541A (en) 1982-02-17
DE3127815A1 (en) 1982-04-08
NL8103330A (en) 1982-02-01
FR2486736B1 (en) 1984-06-22

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