NL161318B - SYMMETRICAL DEVICE FOR FORMING AN ADJUSTABLE AC CURRENT RESISTOR. - Google Patents

SYMMETRICAL DEVICE FOR FORMING AN ADJUSTABLE AC CURRENT RESISTOR.

Info

Publication number
NL161318B
NL161318B NL7408034.A NL7408034A NL161318B NL 161318 B NL161318 B NL 161318B NL 7408034 A NL7408034 A NL 7408034A NL 161318 B NL161318 B NL 161318B
Authority
NL
Netherlands
Prior art keywords
adjustable
forming
current resistor
symmetrical device
symmetrical
Prior art date
Application number
NL7408034.A
Other languages
Dutch (nl)
Other versions
NL7408034A (en
NL161318C (en
Inventor
Nicolaas Joris 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
Priority to NL7408034.A priority Critical patent/NL161318C/en
Priority to AR259237A priority patent/AR205571A1/en
Priority to ZA3735A priority patent/ZA753735B/en
Priority to CA229,066A priority patent/CA1035468A/en
Priority to DE2526309A priority patent/DE2526309C3/en
Priority to DE2560093A priority patent/DE2560093C3/en
Priority to GB25370/75A priority patent/GB1519831A/en
Priority to SE7506779A priority patent/SE413448B/en
Priority to IT68533/75A priority patent/IT1036297B/en
Priority to ES438562A priority patent/ES438562A1/en
Priority to BR4849/75D priority patent/BR7503768A/en
Priority to JP7211675A priority patent/JPS5329584B2/ja
Priority to FR7518899A priority patent/FR2275070A1/en
Priority to AU82146/75A priority patent/AU499961B2/en
Publication of NL7408034A publication Critical patent/NL7408034A/en
Priority to US05/847,221 priority patent/US4131809A/en
Priority to HK486/79A priority patent/HK48679A/en
Publication of NL161318B publication Critical patent/NL161318B/en
Application granted granted Critical
Publication of NL161318C publication Critical patent/NL161318C/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
NL7408034.A 1974-06-17 1974-06-17 SYMMETRICAL DEVICE FOR FORMING AN ADJUSTABLE AC AC RESISTANCE. NL161318C (en)

Priority Applications (16)

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.
AR259237A AR205571A1 (en) 1974-06-17 1975-01-01 SYMMETRICAL ARRANGEMENT FORMING A VARIABLE ALTERNATING CURRENT RESISTANCE BETWEEN A FIRST AND A SECOND TERMINAL
ZA3735A ZA753735B (en) 1974-06-17 1975-06-10 Symmetrical arrangement for forming a variable alternating-current resistance
CA229,066A CA1035468A (en) 1974-06-17 1975-06-11 Symmetrical arrangement for forming a variable alternating-current resistance
DE2560093A DE2560093C3 (en) 1974-06-17 1975-06-12 Symmetrical, controllable alternating current resistance
DE2526309A DE2526309C3 (en) 1974-06-17 1975-06-12 Controllable AC resistance
IT68533/75A IT1036297B (en) 1974-06-17 1975-06-13 SYMMETRIC CIRCUIT ARRANGEMENT FORM A VARIABLE RESISTANCE FOR ALTERNATING CURRENT
SE7506779A SE413448B (en) 1974-06-17 1975-06-13 SYMETRIC DEVICE TO CREATE A VARIABLE AC RESISTANCE
GB25370/75A GB1519831A (en) 1974-06-17 1975-06-13 Symmetrical circuit arrangement for forming a variable ac resistance
ES438562A ES438562A1 (en) 1974-06-17 1975-06-14 Symmetrical circuit arrangement for forming a variable ac resistance
JP7211675A JPS5329584B2 (en) 1974-06-17 1975-06-16
BR4849/75D BR7503768A (en) 1974-06-17 1975-06-16 SYMMETRIC ARRANGEMENT TO FORM A VARIABLE ALTERNATE CURRENT RESISTANCE
FR7518899A FR2275070A1 (en) 1974-06-17 1975-06-17 SYMMETRICAL DEVICE SERVING TO FORM A REGULATED IMPEDANCE
AU82146/75A AU499961B2 (en) 1974-06-17 1975-06-17 Variable alternating-current resistance
US05/847,221 US4131809A (en) 1974-06-17 1977-10-31 Symmetrical arrangement for forming a variable alternating-current resistance
HK486/79A HK48679A (en) 1974-06-17 1979-07-19 Symmetrical circuit arrangement for forming a variable a.c. resistance

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 (3)

Publication Number Publication Date
NL7408034A NL7408034A (en) 1975-12-19
NL161318B true NL161318B (en) 1979-08-15
NL161318C NL161318C (en) 1980-01-15

Family

ID=19821555

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7408034.A NL161318C (en) 1974-06-17 1974-06-17 SYMMETRICAL DEVICE FOR FORMING AN ADJUSTABLE AC AC 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
AU499961B2 (en) 1979-05-10
IT1036297B (en) 1979-10-30
JPS5116885A (en) 1976-02-10
HK48679A (en) 1979-07-27
JPS5329584B2 (en) 1978-08-22
DE2560093C3 (en) 1982-01-28
NL7408034A (en) 1975-12-19
BR7503768A (en) 1976-07-06
DE2526309A1 (en) 1976-01-02
SE7506779L (en) 1975-12-18
ES438562A1 (en) 1977-05-16
DE2560093B2 (en) 1981-04-23
ZA753735B (en) 1977-01-26
DE2526309B2 (en) 1979-09-20
FR2275070B1 (en) 1980-03-21
FR2275070A1 (en) 1976-01-09
DE2526309C3 (en) 1980-06-04
AR205571A1 (en) 1976-05-14
SE413448B (en) 1980-05-27
CA1035468A (en) 1978-07-25
AU8214675A (en) 1976-12-23
NL161318C (en) 1980-01-15
GB1519831A (en) 1978-08-02

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Legal Events

Date Code Title Description
NL80 Abbreviated name of patent owner mentioned of already nullified patent

Owner name: PHILIPS

V4 Lapsed because of reaching the maximum lifetime of a patent