GB2179513B - Amplification gain adjusting circuit - Google Patents

Amplification gain adjusting circuit

Info

Publication number
GB2179513B
GB2179513B GB8617337A GB8617337A GB2179513B GB 2179513 B GB2179513 B GB 2179513B GB 8617337 A GB8617337 A GB 8617337A GB 8617337 A GB8617337 A GB 8617337A GB 2179513 B GB2179513 B GB 2179513B
Authority
GB
United Kingdom
Prior art keywords
adjusting circuit
gain adjusting
amplification gain
amplification
circuit
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.)
Expired
Application number
GB8617337A
Other languages
English (en)
Other versions
GB2179513A (en
GB8617337D0 (en
Inventor
Yoshio Sasaki
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.)
Pioneer Corp
Original Assignee
Pioneer Electronic Corp
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 Pioneer Electronic Corp filed Critical Pioneer Electronic Corp
Publication of GB8617337D0 publication Critical patent/GB8617337D0/en
Publication of GB2179513A publication Critical patent/GB2179513A/en
Application granted granted Critical
Publication of GB2179513B publication Critical patent/GB2179513B/en
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
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G1/00—Details of arrangements for controlling amplification
    • H03G1/0005—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal
    • H03G1/0088—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using discontinuously variable devices, e.g. switch-operated
GB8617337A 1985-07-18 1986-07-16 Amplification gain adjusting circuit Expired GB2179513B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60159720A JPS6220405A (ja) 1985-07-18 1985-07-18 増幅度調整回路

Publications (3)

Publication Number Publication Date
GB8617337D0 GB8617337D0 (en) 1986-08-20
GB2179513A GB2179513A (en) 1987-03-04
GB2179513B true GB2179513B (en) 1989-09-06

Family

ID=15699804

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8617337A Expired GB2179513B (en) 1985-07-18 1986-07-16 Amplification gain adjusting circuit

Country Status (4)

Country Link
US (1) US4754232A (US06277897-20010821-C00009.png)
JP (1) JPS6220405A (US06277897-20010821-C00009.png)
DE (1) DE3624391A1 (US06277897-20010821-C00009.png)
GB (1) GB2179513B (US06277897-20010821-C00009.png)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5892800A (en) * 1997-03-20 1999-04-06 Sigmatel, Inc. Data detection circuit having a pre-amplifier circuit
US20050078841A1 (en) * 2003-10-14 2005-04-14 Boor Steven E. Method and apparatus for resetting a buffer amplifier
WO2017011461A1 (en) 2015-07-15 2017-01-19 Knowles Electronics, Llc Hybrid transducer
US9843292B2 (en) 2015-10-14 2017-12-12 Knowles Electronics, Llc Method and apparatus for maintaining DC bias
US10616691B2 (en) 2015-11-12 2020-04-07 Knowles Electronics, Llc Method and apparatus to increase audio band microphone sensitivity

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3264564A (en) * 1963-02-07 1966-08-02 Rca Corp Variable impedance device for transistor automatic gain control
US3581223A (en) * 1969-04-30 1971-05-25 Hc Electronics Inc Fast response dynamic gain control circuit
DE1943788A1 (de) * 1969-08-28 1971-03-04 Siemens Ag Schaltungsanordnung fuer eine integrierte Verstaerkerstufe mit gesteuerter Gegenkopplung
JPS5648883B1 (US06277897-20010821-C00009.png) * 1971-07-24 1981-11-18
GB1470456A (en) * 1973-06-18 1977-04-14 Sony Corp Automatic gain control circuits
DE2542745C2 (de) * 1975-09-25 1983-06-09 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Verstärker mit veränderbarem Übertragungsmaß, insbesondere für ein Kompander-System
JPS5721379Y2 (US06277897-20010821-C00009.png) * 1977-02-01 1982-05-10
JPS5765913A (en) * 1980-10-13 1982-04-21 Matsushita Electric Ind Co Ltd Variable attenuator
JPS5893010U (ja) * 1981-12-18 1983-06-23 松下電器産業株式会社 ミユ−テイング回路

Also Published As

Publication number Publication date
JPH0444844B2 (US06277897-20010821-C00009.png) 1992-07-23
US4754232A (en) 1988-06-28
GB2179513A (en) 1987-03-04
DE3624391A1 (de) 1987-02-05
JPS6220405A (ja) 1987-01-29
DE3624391C2 (US06277897-20010821-C00009.png) 1993-07-08
GB8617337D0 (en) 1986-08-20

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Legal Events

Date Code Title Description
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19960716