BR7503768A - SYMMETRIC ARRANGEMENT TO FORM A VARIABLE ALTERNATE CURRENT RESISTANCE - Google Patents

SYMMETRIC ARRANGEMENT TO FORM A VARIABLE ALTERNATE CURRENT RESISTANCE

Info

Publication number
BR7503768A
BR7503768A BR4849/75D BR7504849D BR7503768A BR 7503768 A BR7503768 A BR 7503768A BR 4849/75 D BR4849/75 D BR 4849/75D BR 7504849 D BR7504849 D BR 7504849D BR 7503768 A BR7503768 A BR 7503768A
Authority
BR
Brazil
Prior art keywords
current resistance
alternate current
symmetric arrangement
variable
variable alternate
Prior art date
Application number
BR4849/75D
Other languages
Portuguese (pt)
Inventor
N Baars
Original Assignee
Philips Nv
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 Philips Nv filed Critical Philips Nv
Publication of BR7503768A publication Critical patent/BR7503768A/en

Links

Classifications

    • 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
    • H03G1/0082—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using continuously variable impedance elements using bipolar transistor-type 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
BR4849/75D 1974-06-17 1975-06-16 SYMMETRIC ARRANGEMENT TO FORM A VARIABLE ALTERNATE CURRENT RESISTANCE BR7503768A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7408034.A NL161318C (en) 1974-06-17 1974-06-17 SYMMETRICAL DEVICE FOR FORMING AN ADJUSTABLE AC AC RESISTANCE.

Publications (1)

Publication Number Publication Date
BR7503768A true BR7503768A (en) 1976-07-06

Family

ID=19821555

Family Applications (1)

Application Number Title Priority Date Filing Date
BR4849/75D BR7503768A (en) 1974-06-17 1975-06-16 SYMMETRIC ARRANGEMENT TO FORM A VARIABLE ALTERNATE CURRENT RESISTANCE

Country Status (14)

Country Link
JP (1) JPS5329584B2 (en)
AR (1) AR205571A1 (en)
AU (1) AU499961B2 (en)
BR (1) BR7503768A (en)
CA (1) CA1035468A (en)
DE (2) DE2526309C3 (en)
ES (1) ES438562A1 (en)
FR (1) FR2275070A1 (en)
GB (1) GB1519831A (en)
HK (1) HK48679A (en)
IT (1) IT1036297B (en)
NL (1) NL161318C (en)
SE (1) SE413448B (en)
ZA (1) ZA753735B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52153651A (en) * 1976-06-17 1977-12-20 Sony Corp Gain changing circuit
US4345214A (en) * 1980-04-23 1982-08-17 Rca Corporation Variable emitter degeneration gain-controlled amplifier
US4833422A (en) * 1987-09-24 1989-05-23 Burr-Brown Corporation Programmable gain instrumentation amplifier
DE19713571C1 (en) * 1997-04-02 1998-10-01 Telefunken Microelectron Controlled resistance for semi conductor differencing amplifier

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1320027A (en) * 1961-10-19 1963-03-08 Westinghouse Electric Corp Semiconductor potentiometer

Also Published As

Publication number Publication date
ES438562A1 (en) 1977-05-16
DE2526309A1 (en) 1976-01-02
DE2560093B2 (en) 1981-04-23
CA1035468A (en) 1978-07-25
FR2275070A1 (en) 1976-01-09
NL7408034A (en) 1975-12-19
DE2526309C3 (en) 1980-06-04
AR205571A1 (en) 1976-05-14
IT1036297B (en) 1979-10-30
GB1519831A (en) 1978-08-02
AU8214675A (en) 1976-12-23
FR2275070B1 (en) 1980-03-21
DE2560093C3 (en) 1982-01-28
NL161318C (en) 1980-01-15
HK48679A (en) 1979-07-27
SE413448B (en) 1980-05-27
JPS5329584B2 (en) 1978-08-22
NL161318B (en) 1979-08-15
DE2526309B2 (en) 1979-09-20
AU499961B2 (en) 1979-05-10
JPS5116885A (en) 1976-02-10
SE7506779L (en) 1975-12-18
ZA753735B (en) 1977-01-26

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