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FR1018090A - Variable impedance device - Google Patents

Variable impedance device

Info

Publication number
FR1018090A
FR1018090A FR1018090DA FR1018090A FR 1018090 A FR1018090 A FR 1018090A FR 1018090D A FR1018090D A FR 1018090DA FR 1018090 A FR1018090 A FR 1018090A
Authority
FR
France
Prior art keywords
variable impedance
impedance device
variable
impedance
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
Other languages
French (fr)
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.)
RCA Corp
Original Assignee
RCA Corp
Radio Corporation of America
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 RCA Corp, Radio Corporation of America filed Critical RCA Corp
Application granted granted Critical
Publication of FR1018090A publication Critical patent/FR1018090A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H11/00—Networks using active elements
    • H03H11/02—Multiple-port networks
    • H03H11/24—Frequency-independent attenuators
    • 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
FR1018090D 1949-05-28 1950-05-09 Variable impedance device Expired FR1018090A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US1018090XA 1949-05-28 1949-05-28

Publications (1)

Publication Number Publication Date
FR1018090A true FR1018090A (en) 1952-12-26

Family

ID=22075244

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1018090D Expired FR1018090A (en) 1949-05-28 1950-05-09 Variable impedance device

Country Status (2)

Country Link
FR (1) FR1018090A (en)
GB (1) GB673258A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2485848A1 (en) * 1980-06-26 1981-12-31 Rca Corp INTERMEDIATE FREQUENCY AMPLIFIER FOR TELEVISION

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE505008A (en) * 1950-08-02

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2485848A1 (en) * 1980-06-26 1981-12-31 Rca Corp INTERMEDIATE FREQUENCY AMPLIFIER FOR TELEVISION

Also Published As

Publication number Publication date
GB673258A (en) 1952-06-04

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