DK120291A - Element med variabelt tab - Google Patents

Element med variabelt tab Download PDF

Info

Publication number: DK120291A
Authority: DK; Denmark
Prior art keywords: output; input; inverting; operational amplifier; differential cell
Prior art date: 1988-12-20

Application number

DK120291A

Other languages

English (en)

Other versions

DK120291D0 (da

Inventor

Fred Donald Waldhauer

Carlos Alberto Baez

Original Assignee

Resound 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.)

1988-12-20

Filing date

1991-06-20

Publication date

1991-07-01

1988-12-20 Priority claimed from US07/287,394 external-priority patent/US4868517A/en

1991-06-20 Application filed by Resound Corp filed Critical Resound Corp

1991-06-20 Publication of DK120291D0 publication Critical patent/DK120291D0/da

1991-07-01 Publication of DK120291A publication Critical patent/DK120291A/da

Links

Classifications

- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G7/00—Volume compression or expansion in amplifiers
- H03G7/06—Volume compression or expansion in amplifiers having semiconductor devices
- 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
- H03G3/301—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers the gain being continuously variable
- 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
- H03G1/0017—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal the device being at least one of the amplifying solid-state elements
- H03G1/0023—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal the device being at least one of the amplifying solid-state elements in emitter-coupled or cascode amplifiers
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R25/00—Electric hearing aids

Landscapes

Engineering & Computer Science (AREA)
Multimedia (AREA)
Amplifiers (AREA)
Control Of Amplification And Gain Control (AREA)
Oscillators With Electromechanical Resonators (AREA)
Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
Inorganic Insulating Materials (AREA)
Manufacture Of Macromolecular Shaped Articles (AREA)
Diaphragms For Electromechanical Transducers (AREA)
Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
Networks Using Active Elements (AREA)
Thermistors And Varistors (AREA)

DK120291A 1988-12-20 1991-06-20 Element med variabelt tab DK120291A (da)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
US07/287,394 US4868517A (en)	1988-02-23	1988-12-20	Variolosser
PCT/US1989/000741 WO1990007231A1 (en)	1988-12-20	1989-02-23	Improved variolosser

Publications (2)

Publication Number	Publication Date
DK120291D0 DK120291D0 (da)	1991-06-20
DK120291A true DK120291A (da)	1991-07-01

Family

ID=23102704

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
DK120291A DK120291A (da)	1988-12-20	1991-06-20	Element med variabelt tab

Country Status (10)

Country	Link
EP (1)	EP0449823B1 (da)
JP (1)	JPH04503435A (da)
KR (1)	KR900702645A (da)
AT (1)	ATE160061T1 (da)
AU (1)	AU634711B2 (da)
CA (1)	CA1294892C (da)
DE (1)	DE68928434T2 (da)
DK (1)	DK120291A (da)
FI (1)	FI913060A7 (da)
WO (1)	WO1990007231A1 (da)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US6028478A (en) *	1998-07-13	2000-02-22	Philips Electronics North America Corporation	Converter circuit and variable gain amplifier with temperature compensation
US11305142B2 (en)	2018-01-12	2022-04-19	Carrier Corporation	End cap agent nozzle

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3727146A (en) *	1971-12-20	1973-04-10	Us Navy	Linear, voltage variable, temperature stable gain control

1989
- 1989-02-23 WO PCT/US1989/000741 patent/WO1990007231A1/en not_active Ceased
- 1989-02-23 JP JP1505203A patent/JPH04503435A/ja active Pending
- 1989-02-23 DE DE68928434T patent/DE68928434T2/de not_active Expired - Fee Related
- 1989-02-23 AT AT89905523T patent/ATE160061T1/de not_active IP Right Cessation
- 1989-02-23 KR KR1019900700048A patent/KR900702645A/ko not_active Abandoned
- 1989-02-23 FI FI913060A patent/FI913060A7/fi unknown
- 1989-02-23 EP EP89905523A patent/EP0449823B1/en not_active Expired - Lifetime
- 1989-02-23 AU AU35566/89A patent/AU634711B2/en not_active Ceased
- 1989-03-13 CA CA000593515A patent/CA1294892C/en not_active Expired - Fee Related
1991
- 1991-06-20 DK DK120291A patent/DK120291A/da not_active Application Discontinuation

Also Published As

Publication number	Publication date
KR900702645A (ko)	1990-12-08
DE68928434T2 (de)	1998-05-14
FI913060A0 (fi)	1991-06-20
FI913060A7 (fi)	1991-06-20
WO1990007231A1 (en)	1990-06-28
JPH04503435A (ja)	1992-06-18
ATE160061T1 (de)	1997-11-15
EP0449823B1 (en)	1997-11-05
EP0449823A1 (en)	1991-10-09
DE68928434D1 (de)	1997-12-11
DK120291D0 (da)	1991-06-20
AU634711B2 (en)	1993-03-04
EP0449823A4 (en)	1994-05-11
AU3556689A (en)	1990-07-10
CA1294892C (en)	1992-01-28

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Legal Events

Date	Code	Title	Description
2003-09-22	AHB	Application shelved due to non-payment