BRPI0411105A - amplificador que utiliza um comutador analógico - Google Patents

amplificador que utiliza um comutador analógico

Info

Publication number
BRPI0411105A
BRPI0411105A BRPI0411105-2A BRPI0411105A BRPI0411105A BR PI0411105 A BRPI0411105 A BR PI0411105A BR PI0411105 A BRPI0411105 A BR PI0411105A BR PI0411105 A BRPI0411105 A BR PI0411105A
Authority
BR
Brazil
Prior art keywords
amplifier
analog switch
high temperatures
relates
feedback arrangement
Prior art date
Application number
BRPI0411105-2A
Other languages
English (en)
Inventor
Robert Anthony Currell
Dennis Jaques
Original Assignee
Vetco Gray Controls 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 Vetco Gray Controls Ltd filed Critical Vetco Gray Controls Ltd
Publication of BRPI0411105A publication Critical patent/BRPI0411105A/pt

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
    • H03K3/027—Generators characterised by the type of circuit or by the means used for producing pulses by the use of logic circuits, with internal or external positive feedback
    • H03K3/037—Bistable circuits
    • H03K3/0377—Bistables with hysteresis, e.g. Schmitt trigger
    • 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
    • H03F1/301—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters in MOSFET amplifiers
    • 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
    • H03F1/303—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters using a switching device
    • 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
    • H03F1/34—Negative-feedback-circuit arrangements with or without positive feedback
    • 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
    • H03F1/52—Circuit arrangements for protecting such amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/181—Low-frequency amplifiers, e.g. audio preamplifiers
    • H03F3/183—Low-frequency amplifiers, e.g. audio preamplifiers with semiconductor devices only
    • H03F3/185—Low-frequency amplifiers, e.g. audio preamplifiers with semiconductor devices only with field-effect devices
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/01—Details
    • H03K3/011—Modifications of generator to compensate for variations in physical values, e.g. voltage, temperature
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
    • H03K3/353—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of field-effect transistors with internal or external positive feedback
    • H03K3/356—Bistable circuits
    • H03K3/3565—Bistables with hysteresis, e.g. Schmitt trigger

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Multimedia (AREA)
  • Amplifiers (AREA)
  • Manipulation Of Pulses (AREA)
  • Electronic Switches (AREA)

Abstract

"AMPLIFICADOR QUE UTILIZA UM COMUTADOR ANALóGICO". A invenção relaciona-se a um amplificador que é adequado para utilização em altas temperaturas. Ele compreende um comutador analógico e uma disposição de retroalimentação (8, 4).
BRPI0411105-2A 2003-06-07 2004-04-28 amplificador que utiliza um comutador analógico BRPI0411105A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0313189A GB2402565B (en) 2003-06-07 2003-06-07 Linear amplifier and Schmitt trigger using an analogue switch
PCT/GB2004/001851 WO2004109906A1 (en) 2003-06-07 2004-04-28 Amplifier using an analogue switch

Publications (1)

Publication Number Publication Date
BRPI0411105A true BRPI0411105A (pt) 2006-07-18

Family

ID=27589680

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0411105-2A BRPI0411105A (pt) 2003-06-07 2004-04-28 amplificador que utiliza um comutador analógico

Country Status (6)

Country Link
US (1) US20060158249A1 (pt)
EP (1) EP1634370A1 (pt)
BR (1) BRPI0411105A (pt)
GB (1) GB2402565B (pt)
NO (1) NO20060096L (pt)
WO (1) WO2004109906A1 (pt)

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3694748A (en) * 1971-07-19 1972-09-26 Hekimian Laboratories Inc Peak-to-peak detector
US4298843A (en) * 1979-06-15 1981-11-03 Edo-Aire Mitchell Stabilized DC amplifier
US4297642A (en) * 1979-10-31 1981-10-27 Bell Telephone Laboratories, Incorporated Offset correction in operational amplifiers
US4345218A (en) * 1980-09-08 1982-08-17 National Semiconductor Corporation Two stage thermal shutdown
US4641105A (en) * 1985-10-07 1987-02-03 Burr-Brown Corporation Apparatus and method for noise reduction in a linear amplifier
US5122680A (en) * 1990-10-29 1992-06-16 International Business Machines Corporation Precision hysteresis circuit
JPH05291887A (ja) * 1992-04-07 1993-11-05 Oki Micro Design Miyazaki:Kk シミットトリガ回路
US5585756A (en) * 1995-02-27 1996-12-17 University Of Chicago Gated integrator with signal baseline subtraction
GB2305318A (en) * 1995-09-13 1997-04-02 Thomson Multimedia Sa Schmitt trigger for DTMF receiver
EP1235348A1 (en) * 2001-02-14 2002-08-28 Siemens Aktiengesellschaft Hysteresis circuit
JP4878092B2 (ja) * 2001-07-06 2012-02-15 旭化成エレクトロニクス株式会社 ミュート回路

Also Published As

Publication number Publication date
NO20060096L (no) 2006-01-06
GB2402565B (en) 2006-04-19
US20060158249A1 (en) 2006-07-20
GB2402565A (en) 2004-12-08
GB0313189D0 (en) 2003-07-16
WO2004109906A1 (en) 2004-12-16
EP1634370A1 (en) 2006-03-15

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Legal Events

Date Code Title Description
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE AS 5A, 6A, 7A E 8A ANUIDADES.

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 2159 DE 22/05/2012.