JPH0556685B2 - - Google Patents

Info

Publication number
JPH0556685B2
JPH0556685B2 JP62091859A JP9185987A JPH0556685B2 JP H0556685 B2 JPH0556685 B2 JP H0556685B2 JP 62091859 A JP62091859 A JP 62091859A JP 9185987 A JP9185987 A JP 9185987A JP H0556685 B2 JPH0556685 B2 JP H0556685B2
Authority
JP
Japan
Prior art keywords
current
resistor
common mode
operational amplifier
current path
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 - Lifetime
Application number
JP62091859A
Other languages
English (en)
Japanese (ja)
Other versions
JPS62250706A (ja
Inventor
Ei Baretsuto Ronarudo
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.)
Tektronix Inc
Original Assignee
Tektronix 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 Tektronix Inc filed Critical Tektronix Inc
Publication of JPS62250706A publication Critical patent/JPS62250706A/ja
Publication of JPH0556685B2 publication Critical patent/JPH0556685B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/02—Manually-operated control
    • H03G3/04—Manually-operated control in untuned amplifiers
    • H03G3/10—Manually-operated control in untuned amplifiers having semiconductor devices
    • 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 of the amplifier
    • 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 of the amplifier in emitter-coupled or cascode amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H11/00—Networks using active elements
    • H03H11/02—Multiple-port networks
    • H03H11/24—Frequency-independent attenuators

Landscapes

  • Networks Using Active Elements (AREA)
  • Control Of Amplification And Gain Control (AREA)
  • Amplifiers (AREA)
JP62091859A 1986-04-15 1987-04-14 可変減衰器 Granted JPS62250706A (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US852476 1986-04-15
US06/852,476 US4695806A (en) 1986-04-15 1986-04-15 Precision remotely-switched attenuator

Publications (2)

Publication Number Publication Date
JPS62250706A JPS62250706A (ja) 1987-10-31
JPH0556685B2 true JPH0556685B2 (US06272168-20010807-M00014.png) 1993-08-20

Family

ID=25313447

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62091859A Granted JPS62250706A (ja) 1986-04-15 1987-04-14 可変減衰器

Country Status (3)

Country Link
US (1) US4695806A (US06272168-20010807-M00014.png)
EP (1) EP0242479A3 (US06272168-20010807-M00014.png)
JP (1) JPS62250706A (US06272168-20010807-M00014.png)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0691390B2 (ja) * 1988-05-02 1994-11-14 株式会社東芝 増幅器
US5371475A (en) * 1993-06-03 1994-12-06 Northern Telecom Limited Low noise oscillators and tracking filters
US5491447A (en) * 1994-05-13 1996-02-13 International Business Machines Corporation Operational transconductance amplifier with independent transconductance and common mode feedback control
NL1002732C2 (nl) * 1996-03-28 1997-09-30 Stichting Tech Wetenschapp Instrumentatieversterker.
JP3058087B2 (ja) * 1996-06-07 2000-07-04 日本電気株式会社 利得可変増幅器
US6232815B1 (en) * 1999-05-06 2001-05-15 Analog Devices, Inc. ATE pin electronics with complementary waveform drivers
US6600372B2 (en) * 2000-12-22 2003-07-29 Intersil Americas Inc. Attenuator control circuit
US6670847B1 (en) 2002-01-18 2003-12-30 Xilinx, Inc. Inductive amplifier with a feed forward boost
US7850395B1 (en) 2002-03-15 2010-12-14 GOMACO Corporation a division of Godbersen Smith Construction Co. Smoothness indicator analysis system
US7044680B2 (en) * 2002-03-15 2006-05-16 Gomaco Corporation Method and apparatus for calculating and using the profile of a surface
US8682622B1 (en) 2002-03-15 2014-03-25 Gomaco Corporation Smoothness indicator analysis system
US9963836B1 (en) 2005-02-23 2018-05-08 Gomaco Corporation Method for operating paving train machines
CN102354241B (zh) * 2011-07-29 2015-04-01 开曼群岛威睿电通股份有限公司 电压/电流转换电路
CN106941343A (zh) * 2017-01-10 2017-07-11 广州致远电子股份有限公司 一种线性可变增益放大器

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7802973A (nl) * 1978-03-20 1979-09-24 Philips Nv Versterkerschakeling met regelbare versterkings- factor.
DE2951637C2 (de) * 1979-12-21 1981-10-01 Philips Patentverwaltung Gmbh, 2000 Hamburg Einstellbarer Transistor-Differenzverstärker
US4471320A (en) * 1981-05-27 1984-09-11 Frey Douglas R Voltage controlled element
US4523153A (en) * 1983-04-27 1985-06-11 Iwatsu Electric Co., Ltd. Variable gain amplifier

Also Published As

Publication number Publication date
JPS62250706A (ja) 1987-10-31
EP0242479A3 (en) 1989-06-07
US4695806A (en) 1987-09-22
EP0242479A2 (en) 1987-10-28

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