ZA753735B - Symmetrical arrangement for forming a variable alternating-current resistance - Google Patents

Symmetrical arrangement for forming a variable alternating-current resistance

Info

Publication number
ZA753735B
ZA753735B ZA3735A ZA753735A ZA753735B ZA 753735 B ZA753735 B ZA 753735B ZA 3735 A ZA3735 A ZA 3735A ZA 753735 A ZA753735 A ZA 753735A ZA 753735 B ZA753735 B ZA 753735B
Authority
ZA
South Africa
Prior art keywords
forming
symmetrical arrangement
current resistance
variable alternating
alternating
Prior art date
Application number
ZA3735A
Other languages
English (en)
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 ZA753735B publication Critical patent/ZA753735B/xx

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
ZA3735A 1974-06-17 1975-06-10 Symmetrical arrangement for forming a variable alternating-current resistance ZA753735B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7408034.A NL161318C (nl) 1974-06-17 1974-06-17 Symmetrische inrichting voor het vormen van een regel- bare wisselstroomweerstand.

Publications (1)

Publication Number Publication Date
ZA753735B true ZA753735B (en) 1977-01-26

Family

ID=19821555

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA3735A ZA753735B (en) 1974-06-17 1975-06-10 Symmetrical arrangement for forming a variable alternating-current resistance

Country Status (14)

Country Link
JP (1) JPS5329584B2 (xx)
AR (1) AR205571A1 (xx)
AU (1) AU499961B2 (xx)
BR (1) BR7503768A (xx)
CA (1) CA1035468A (xx)
DE (2) DE2560093C3 (xx)
ES (1) ES438562A1 (xx)
FR (1) FR2275070A1 (xx)
GB (1) GB1519831A (xx)
HK (1) HK48679A (xx)
IT (1) IT1036297B (xx)
NL (1) NL161318C (xx)
SE (1) SE413448B (xx)
ZA (1) ZA753735B (xx)

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 (de) * 1997-04-02 1998-10-01 Telefunken Microelectron Steuerbare Widerstandsanordnung

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1320027A (fr) 1961-10-19 1963-03-08 Westinghouse Electric Corp Potentiomètre à semi-conducteur

Also Published As

Publication number Publication date
GB1519831A (en) 1978-08-02
AR205571A1 (es) 1976-05-14
HK48679A (en) 1979-07-27
AU499961B2 (en) 1979-05-10
DE2526309A1 (de) 1976-01-02
SE7506779L (sv) 1975-12-18
DE2526309B2 (de) 1979-09-20
NL7408034A (nl) 1975-12-19
DE2526309C3 (de) 1980-06-04
SE413448B (sv) 1980-05-27
JPS5116885A (xx) 1976-02-10
IT1036297B (it) 1979-10-30
AU8214675A (en) 1976-12-23
JPS5329584B2 (xx) 1978-08-22
FR2275070A1 (fr) 1976-01-09
NL161318B (nl) 1979-08-15
ES438562A1 (es) 1977-05-16
DE2560093B2 (de) 1981-04-23
DE2560093C3 (de) 1982-01-28
NL161318C (nl) 1980-01-15
BR7503768A (pt) 1976-07-06
FR2275070B1 (xx) 1980-03-21
CA1035468A (en) 1978-07-25

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