AU499961B2 - Variable alternating-current resistance - Google Patents

Variable alternating-current resistance

Info

Publication number: AU499961B2
Authority: AU; Australia
Prior art keywords: current resistance; variable alternating; alternating; variable; resistance
Prior art date: 1974-06-17
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

AU82146/75A

Other versions

AU8214675A (en

Inventor

N. J Baars

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.)

1974-06-17

Filing date

1975-06-17

Publication date

1979-05-10

1975-06-17 Application filed by Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV

1976-12-23 Publication of AU8214675A publication Critical patent/AU8214675A/en

1979-05-10 Application granted granted Critical

1979-05-10 Publication of AU499961B2 publication Critical patent/AU499961B2/en

Status Expired legal-status Critical Current

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

AU82146/75A 1974-06-17 1975-06-17 Variable alternating-current resistance Expired AU499961B2 (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 (2)

Publication Number	Publication Date
AU8214675A AU8214675A (en)	1976-12-23
AU499961B2 true AU499961B2 (en)	1979-05-10

Family

ID=19821555

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
AU82146/75A Expired AU499961B2 (en)	1974-06-17	1975-06-17	Variable alternating-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

1974
- 1974-06-17 NL NL7408034.A patent/NL161318C/en not_active IP Right Cessation
1975
- 1975-01-01 AR AR259237A patent/AR205571A1/en active
- 1975-06-10 ZA ZA3735A patent/ZA753735B/en unknown
- 1975-06-11 CA CA229,066A patent/CA1035468A/en not_active Expired
- 1975-06-12 DE DE2526309A patent/DE2526309C3/en not_active Expired
- 1975-06-12 DE DE2560093A patent/DE2560093C3/en not_active Expired
- 1975-06-13 GB GB25370/75A patent/GB1519831A/en not_active Expired
- 1975-06-13 SE SE7506779A patent/SE413448B/en not_active IP Right Cessation
- 1975-06-13 IT IT68533/75A patent/IT1036297B/en active
- 1975-06-14 ES ES438562A patent/ES438562A1/en not_active Expired
- 1975-06-16 JP JP7211675A patent/JPS5329584B2/ja not_active Expired
- 1975-06-16 BR BR4849/75D patent/BR7503768A/en unknown
- 1975-06-17 FR FR7518899A patent/FR2275070A1/en active Granted
- 1975-06-17 AU AU82146/75A patent/AU499961B2/en not_active Expired
1979
- 1979-07-19 HK HK486/79A patent/HK48679A/en unknown

Also Published As

Publication number	Publication date
ES438562A1 (en)	1977-05-16
SE7506779L (en)	1975-12-18
FR2275070A1 (en)	1976-01-09
JPS5329584B2 (en)	1978-08-22
DE2526309A1 (en)	1976-01-02
IT1036297B (en)	1979-10-30
NL7408034A (en)	1975-12-19
SE413448B (en)	1980-05-27
AR205571A1 (en)	1976-05-14
DE2560093C3 (en)	1982-01-28
NL161318C (en)	1980-01-15
HK48679A (en)	1979-07-27
CA1035468A (en)	1978-07-25
FR2275070B1 (en)	1980-03-21
BR7503768A (en)	1976-07-06
GB1519831A (en)	1978-08-02
NL161318B (en)	1979-08-15
AU8214675A (en)	1976-12-23
DE2526309C3 (en)	1980-06-04
DE2560093B2 (en)	1981-04-23
ZA753735B (en)	1977-01-26
DE2526309B2 (en)	1979-09-20
JPS5116885A (en)	1976-02-10

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CA1021418A (en)	1977-11-22	Variable resistance control
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