CA2031580A1 - Stabilisateur d'amplitude numerique peu couteux universel - Google Patents

Stabilisateur d'amplitude numerique peu couteux universel

Info

Publication number
CA2031580A1
CA2031580A1 CA2031580A CA2031580A CA2031580A1 CA 2031580 A1 CA2031580 A1 CA 2031580A1 CA 2031580 A CA2031580 A CA 2031580A CA 2031580 A CA2031580 A CA 2031580A CA 2031580 A1 CA2031580 A1 CA 2031580A1
Authority
CA
Canada
Prior art keywords
diode
low cost
pulses
duty cycle
digital amplitude
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.)
Granted
Application number
CA2031580A
Other languages
English (en)
Other versions
CA2031580C (fr
Inventor
Eugene J. Rosenthal
Walter G. Kutzavitch
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.)
AT&T Corp
Original Assignee
American Telephone and Telegraph Co Inc
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 American Telephone and Telegraph Co Inc filed Critical American Telephone and Telegraph Co Inc
Publication of CA2031580A1 publication Critical patent/CA2031580A1/fr
Application granted granted Critical
Publication of CA2031580C publication Critical patent/CA2031580C/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G1/00—Details of arrangements for controlling amplification
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • 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
    • H03G1/0035—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using continuously variable impedance elements
    • H03G1/0052—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using continuously variable impedance elements using diodes
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/001—Digital control of analog signals

Landscapes

  • Control Of Amplification And Gain Control (AREA)
  • Amplifiers (AREA)
  • Pulse Circuits (AREA)
CA002031580A 1990-02-20 1990-12-05 Stabilisateur d'amplitude numerique peu couteux universel Expired - Lifetime CA2031580C (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US482,443 1990-02-20
US07/482,443 US5027083A (en) 1990-02-20 1990-02-20 General purpose low cost digital amplitude regulator

Publications (2)

Publication Number Publication Date
CA2031580A1 true CA2031580A1 (fr) 1991-08-21
CA2031580C CA2031580C (fr) 1994-03-22

Family

ID=23916094

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002031580A Expired - Lifetime CA2031580C (fr) 1990-02-20 1990-12-05 Stabilisateur d'amplitude numerique peu couteux universel

Country Status (9)

Country Link
US (1) US5027083A (fr)
EP (1) EP0443250B1 (fr)
JP (1) JPH0656937B2 (fr)
KR (1) KR950005174B1 (fr)
CA (1) CA2031580C (fr)
DE (1) DE69031069T2 (fr)
ES (1) ES2103728T3 (fr)
MX (1) MX170806B (fr)
SG (1) SG42814A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993003549A1 (fr) * 1991-07-31 1993-02-18 Euphonix, Inc. Console de mixage audio automatisee
US5781456A (en) * 1997-07-11 1998-07-14 Space Systems/Loral, Inc. Software select and test
US7923238B2 (en) * 2006-02-10 2011-04-12 Bio-Rad Laboratories, Inc. Multi-channel electroporation system
US7750605B2 (en) * 2006-09-21 2010-07-06 Bio-Rad Laboratories, Inc. Controlling an electrical signal sent to a sample load using a pulse modulated resistance
US7576549B2 (en) * 2006-09-21 2009-08-18 Bio-Rad Laboratories, Inc. Methods for measuring sample resistance in electroporation
JP2008205560A (ja) * 2007-02-16 2008-09-04 Fujitsu Ltd 可変利得増幅回路、フィルタ回路、及び半導体装置
TWI396389B (zh) * 2007-06-04 2013-05-11 Quanta Comp Inc 複合式開關控制系統
JP2011091572A (ja) * 2009-10-21 2011-05-06 Sanyo Electric Co Ltd 可変利得増幅回路

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2204333A5 (fr) * 1972-10-20 1974-05-17 Thomson Csf
DE2740567A1 (de) * 1977-09-08 1979-03-22 Pichler Heinrich Daempfungsglied fuer tonfrequenzsignale
JPS56162516A (en) * 1980-05-20 1981-12-14 Sanyo Electric Co Ltd Power amplifying circuit on pulse-width modulation system
US4435679A (en) * 1981-05-26 1984-03-06 General Electric Company Programmable signal amplitude control circuits
US4468631A (en) * 1982-05-24 1984-08-28 Rca Corporation Amplitude control apparatus
JPS6095721U (ja) * 1983-12-07 1985-06-29 パイオニア株式会社 電子ボリユ−ム回路
US4868519A (en) * 1988-11-02 1989-09-19 Dnic Brokerage Company Microprocessor-controlled amplifier

Also Published As

Publication number Publication date
MX170806B (es) 1993-09-15
EP0443250A2 (fr) 1991-08-28
JPH05335852A (ja) 1993-12-17
EP0443250B1 (fr) 1997-07-16
ES2103728T3 (es) 1997-10-01
DE69031069T2 (de) 1997-10-30
KR950005174B1 (ko) 1995-05-19
SG42814A1 (en) 1997-10-17
DE69031069D1 (de) 1997-08-21
US5027083A (en) 1991-06-25
CA2031580C (fr) 1994-03-22
KR910016135A (ko) 1991-09-30
EP0443250A3 (en) 1991-12-27
JPH0656937B2 (ja) 1994-07-27

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed
MKEC Expiry (correction)

Effective date: 20121202