DE2526309C3 - Steuerbarer Wechselstromwiderstand - Google Patents

Steuerbarer Wechselstromwiderstand

Info

Publication number
DE2526309C3
DE2526309C3 DE2526309A DE2526309A DE2526309C3 DE 2526309 C3 DE2526309 C3 DE 2526309C3 DE 2526309 A DE2526309 A DE 2526309A DE 2526309 A DE2526309 A DE 2526309A DE 2526309 C3 DE2526309 C3 DE 2526309C3
Authority
DE
Germany
Prior art keywords
zone
resistance
terminal
emitter
current
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
Application number
DE2526309A
Other languages
German (de)
English (en)
Other versions
DE2526309A1 (de
DE2526309B2 (de
Inventor
Nicolaas Joris Eindhoven Baars (Niederlande)
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken 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 Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of DE2526309A1 publication Critical patent/DE2526309A1/de
Publication of DE2526309B2 publication Critical patent/DE2526309B2/de
Application granted granted Critical
Publication of DE2526309C3 publication Critical patent/DE2526309C3/de
Expired legal-status Critical Current

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

Landscapes

  • Bipolar Transistors (AREA)
  • Semiconductor Integrated Circuits (AREA)
  • Bipolar Integrated Circuits (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
DE2526309A 1974-06-17 1975-06-12 Steuerbarer Wechselstromwiderstand Expired DE2526309C3 (de)

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 (3)

Publication Number Publication Date
DE2526309A1 DE2526309A1 (de) 1976-01-02
DE2526309B2 DE2526309B2 (de) 1979-09-20
DE2526309C3 true DE2526309C3 (de) 1980-06-04

Family

ID=19821555

Family Applications (2)

Application Number Title Priority Date Filing Date
DE2526309A Expired DE2526309C3 (de) 1974-06-17 1975-06-12 Steuerbarer Wechselstromwiderstand
DE2560093A Expired DE2560093C3 (de) 1974-06-17 1975-06-12 Symmetrischer, steuerbarer Wechselstromwiderstand

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE2560093A Expired DE2560093C3 (de) 1974-06-17 1975-06-12 Symmetrischer, steuerbarer Wechselstromwiderstand

Country Status (14)

Country Link
JP (1) JPS5329584B2 (US08017720-20110913-C00001.png)
AR (1) AR205571A1 (US08017720-20110913-C00001.png)
AU (1) AU499961B2 (US08017720-20110913-C00001.png)
BR (1) BR7503768A (US08017720-20110913-C00001.png)
CA (1) CA1035468A (US08017720-20110913-C00001.png)
DE (2) DE2526309C3 (US08017720-20110913-C00001.png)
ES (1) ES438562A1 (US08017720-20110913-C00001.png)
FR (1) FR2275070A1 (US08017720-20110913-C00001.png)
GB (1) GB1519831A (US08017720-20110913-C00001.png)
HK (1) HK48679A (US08017720-20110913-C00001.png)
IT (1) IT1036297B (US08017720-20110913-C00001.png)
NL (1) NL161318C (US08017720-20110913-C00001.png)
SE (1) SE413448B (US08017720-20110913-C00001.png)
ZA (1) ZA753735B (US08017720-20110913-C00001.png)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19713571C1 (de) * 1997-04-02 1998-10-01 Telefunken Microelectron Steuerbare Widerstandsanordnung

Families Citing this family (3)

* 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

Citations (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

Patent Citations (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

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
IEEE Transactions on Broadcast and Television Receivers, Aug. 1972, S. 158-163

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19713571C1 (de) * 1997-04-02 1998-10-01 Telefunken Microelectron Steuerbare Widerstandsanordnung

Also Published As

Publication number Publication date
DE2560093B2 (de) 1981-04-23
GB1519831A (en) 1978-08-02
NL161318C (nl) 1980-01-15
DE2560093C3 (de) 1982-01-28
BR7503768A (pt) 1976-07-06
ZA753735B (en) 1977-01-26
DE2526309A1 (de) 1976-01-02
NL7408034A (nl) 1975-12-19
JPS5116885A (US08017720-20110913-C00001.png) 1976-02-10
FR2275070A1 (fr) 1976-01-09
IT1036297B (it) 1979-10-30
FR2275070B1 (US08017720-20110913-C00001.png) 1980-03-21
AR205571A1 (es) 1976-05-14
DE2526309B2 (de) 1979-09-20
ES438562A1 (es) 1977-05-16
SE413448B (sv) 1980-05-27
JPS5329584B2 (US08017720-20110913-C00001.png) 1978-08-22
CA1035468A (en) 1978-07-25
SE7506779L (sv) 1975-12-18
AU499961B2 (en) 1979-05-10
HK48679A (en) 1979-07-27
AU8214675A (en) 1976-12-23
NL161318B (nl) 1979-08-15

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Legal Events

Date Code Title Description
OI Miscellaneous see part 1
OI Miscellaneous see part 1
C3 Grant after two publication steps (3rd publication)
AH Division in

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