JPS4873514U - - Google Patents

Info

Publication number
JPS4873514U
JPS4873514U JP1971119153U JP11915371U JPS4873514U JP S4873514 U JPS4873514 U JP S4873514U JP 1971119153 U JP1971119153 U JP 1971119153U JP 11915371 U JP11915371 U JP 11915371U JP S4873514 U JPS4873514 U JP S4873514U
Authority
JP
Japan
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
JP1971119153U
Other versions
JPS5339170Y2 (ja
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 filed Critical
Priority to JP1971119153U priority Critical patent/JPS5339170Y2/ja
Priority to US00311922A priority patent/US3840820A/en
Priority to GB5657572A priority patent/GB1401457A/en
Priority to DE2261139A priority patent/DE2261139C2/de
Priority to CA158,945A priority patent/CA964594A/en
Priority to NLAANVRAGE7217237,A priority patent/NL182358C/xx
Publication of JPS4873514U publication Critical patent/JPS4873514U/ja
Application granted granted Critical
Publication of JPS5339170Y2 publication Critical patent/JPS5339170Y2/ja
Expired legal-status Critical Current

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
    • H03G3/34—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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/005—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection avoiding undesired transient conditions
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/30—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters
    • H03F1/305—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters in case of switching on or off of a power supply

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
  • Electronic Switches (AREA)
  • Control Of Amplification And Gain Control (AREA)
JP1971119153U 1971-12-17 1971-12-17 Expired JPS5339170Y2 (ja)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP1971119153U JPS5339170Y2 (ja) 1971-12-17 1971-12-17
US00311922A US3840820A (en) 1971-12-17 1972-12-04 Muting circuit
GB5657572A GB1401457A (en) 1971-12-17 1972-12-07 Muting circuits
DE2261139A DE2261139C2 (de) 1971-12-17 1972-12-14 Schaltungsanordnung zur Unterdrückung von Geräuschen beim Ein- und Ausschalten einer einen Lautsprecher speisenden Verstärkeranordnung
CA158,945A CA964594A (en) 1971-12-17 1972-12-15 Muting circuit
NLAANVRAGE7217237,A NL182358C (nl) 1971-12-17 1972-12-18 Schakeling voor blokkering van inschakelverschijnselen bij een via een voedingsschakelaar aan een voedingsbron aangesloten versterkingsschakeling.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1971119153U JPS5339170Y2 (ja) 1971-12-17 1971-12-17

Publications (2)

Publication Number Publication Date
JPS4873514U true JPS4873514U (ja) 1973-09-13
JPS5339170Y2 JPS5339170Y2 (ja) 1978-09-21

Family

ID=14754218

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1971119153U Expired JPS5339170Y2 (ja) 1971-12-17 1971-12-17

Country Status (6)

Country Link
US (1) US3840820A (ja)
JP (1) JPS5339170Y2 (ja)
CA (1) CA964594A (ja)
DE (1) DE2261139C2 (ja)
GB (1) GB1401457A (ja)
NL (1) NL182358C (ja)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4999150U (ja) * 1972-12-14 1974-08-27
JPS50103237A (ja) * 1974-01-10 1975-08-15
JPS5216835U (ja) * 1975-07-25 1977-02-05
JPS5270417U (ja) * 1975-11-21 1977-05-25
JPS5327856U (ja) * 1976-08-16 1978-03-09
JPS53164748U (ja) * 1977-05-31 1978-12-23
JPS55684A (en) * 1979-04-14 1980-01-07 Toshiba Corp Power unit for aural amplifier
JPH04172823A (ja) * 1990-11-07 1992-06-19 Matsushita Electric Ind Co Ltd Ｄ／ａ変換器

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3965295A (en) * 1974-07-17 1976-06-22 Mcintosh Laboratory, Inc. Protective system for stereo loudspeakers
US4054845A (en) * 1975-12-08 1977-10-18 Rca Corporation Transient and thermal protection
JPS5394160A (en) * 1977-01-28 1978-08-17 Pioneer Electronic Corp Muutuning circuit
JPS6034094Y2 (ja) * 1979-03-26 1985-10-11 オリンパス光学工業株式会社 ミユ−テイング回路
DE2950918A1 (de) * 1979-12-14 1981-06-19 Siemens AG, 1000 Berlin und 8000 München Ueberspannungsschutzschaltung
JPS5717204A (en) * 1980-07-04 1982-01-28 Fujitsu Ltd Transient sound prevention type power amplifying circuit
US4408098A (en) * 1981-06-18 1983-10-04 U.S. Philips Corporation Receiver with field-strength dependent noise reduction control
DE3131429C2 (de) * 1981-08-07 1986-03-20 ANT Nachrichtentechnik GmbH, 7150 Backnang Transistor-Leistungsschaltung
DE3216833A1 (de) * 1982-05-05 1983-11-10 Siemens AG, 1000 Berlin und 8000 München Schutzschaltung fuer einen schalttransistor
US4441086A (en) * 1982-05-13 1984-04-03 General Motors Corporation Audio system with orderly shutdown sequence
JPS5955608A (ja) * 1982-09-24 1984-03-30 Hitachi Ltd 増幅器
DE3337072C2 (de) * 1982-10-16 1985-09-26 Metz Apparatewerke Inh. Paul Metz, 8510 Fürth Niederfrequenzverstärker
US4975963A (en) * 1983-08-01 1990-12-04 Zvie Liberman Muting circuit
DE3512480A1 (de) * 1985-04-04 1986-10-09 AKO-Werke GmbH & Co KG, 7988 Wangen Schalteinrichtung
IT1217773B (it) * 1988-06-02 1990-03-30 Sgs Thomson Microelectronics Circuito di ammutolimento per amplificatori audio
US5237421A (en) * 1990-08-27 1993-08-17 Thomson Consumer Electronics, Inc. Shutdown system in a television receiver
US5255094A (en) * 1990-10-10 1993-10-19 Thomson Consumer Electronics, S.A. Muting circuit for eliminating transient signals generated due to power supply turn-on and turn-off
JPH04160910A (ja) * 1990-10-25 1992-06-04 Pioneer Electron Corp 保護回路
EP0576770B1 (en) * 1992-05-22 1999-12-22 STMicroelectronics S.r.l. Audio Amplifier turn-off control circuit
US5818299A (en) * 1995-08-04 1998-10-06 Compaq Computer Corporation Power management in a computer
US7167697B2 (en) * 2003-11-03 2007-01-23 Oneworld Enterprises Limited Reverse electronic tuning circuit for FM radio frequency-lock-loop circuits
TWI230557B (en) * 2003-11-06 2005-04-01 Liteon It Corp Mute circuit for use in the duration of power switching
CN100505542C (zh) * 2004-12-29 2009-06-24 普诚科技股份有限公司 音频放大器静音电路

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4999150U (ja) * 1972-12-14 1974-08-27
JPS50103237A (ja) * 1974-01-10 1975-08-15
JPS5216835U (ja) * 1975-07-25 1977-02-05
JPS5270417U (ja) * 1975-11-21 1977-05-25
JPS5327856U (ja) * 1976-08-16 1978-03-09
JPS53164748U (ja) * 1977-05-31 1978-12-23
JPS55684A (en) * 1979-04-14 1980-01-07 Toshiba Corp Power unit for aural amplifier
JPH04172823A (ja) * 1990-11-07 1992-06-19 Matsushita Electric Ind Co Ltd Ｄ／ａ変換器

Also Published As

Publication number Publication date
NL182358B (nl) 1987-09-16
DE2261139A1 (de) 1973-06-20
US3840820A (en) 1974-10-08
NL7217237A (ja) 1973-06-19
JPS5339170Y2 (ja) 1978-09-21
DE2261139C2 (de) 1983-06-23
GB1401457A (en) 1975-07-16
NL182358C (nl) 1988-02-16
CA964594A (en) 1975-03-18

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