CH269321A - Variable impedance electrical device for alternating currents. - Google Patents

Variable impedance electrical device for alternating currents.

Info

Publication number
CH269321A
CH269321A CH269321DA CH269321A CH 269321 A CH269321 A CH 269321A CH 269321D A CH269321D A CH 269321DA CH 269321 A CH269321 A CH 269321A
Authority
CH
Switzerland
Prior art keywords
electrical device
variable impedance
alternating currents
impedance electrical
currents
Prior art date
Application number
Other languages
French (fr)
Inventor
Limited Marconi S Wire Company
Original Assignee
Marconi Wireless Telegraph Co
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 Marconi Wireless Telegraph Co filed Critical Marconi Wireless Telegraph Co
Publication of CH269321A publication Critical patent/CH269321A/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
    • H03F1/04—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in discharge-tube amplifiers
    • H03F1/06—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in discharge-tube amplifiers to raise the efficiency of amplifying modulated radio frequency waves; to raise the efficiency of amplifiers acting also as modulators
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B11/00—Straight-bar knitting machines with fixed needles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P5/00—Coupling devices of the waveguide type
    • H01P5/02—Coupling devices of the waveguide type with invariable factor of coupling
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P5/00—Coupling devices of the waveguide type
    • H01P5/08—Coupling devices of the waveguide type for linking dissimilar lines or devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P7/00—Resonators of the waveguide type
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/30—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator
    • H03B5/32—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator
    • H03B5/34—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator active element in amplifier being vacuum tube

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
CH269321D 1946-05-10 1947-04-09 Variable impedance electrical device for alternating currents. CH269321A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB269321X 1946-05-10
GB280147X 1948-02-21

Publications (1)

Publication Number Publication Date
CH269321A true CH269321A (en) 1950-06-30

Family

ID=26258515

Family Applications (2)

Application Number Title Priority Date Filing Date
CH269321D CH269321A (en) 1946-05-10 1947-04-09 Variable impedance electrical device for alternating currents.
CH280147D CH280147A (en) 1946-05-10 1949-02-21 Straight bar knitting machine.

Family Applications After (1)

Application Number Title Priority Date Filing Date
CH280147D CH280147A (en) 1946-05-10 1949-02-21 Straight bar knitting machine.

Country Status (5)

Country Link
US (1) US2585804A (en)
CH (2) CH269321A (en)
DE (1) DE854985C (en)
FR (2) FR945236A (en)
GB (2) GB611858A (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR741233A (en) * 1931-07-27 1933-02-08
DE604654C (en) * 1932-07-22 1934-10-29 Max Nebel Flat weft knitting machine
FR852600A (en) * 1938-04-05 1940-03-01

Also Published As

Publication number Publication date
FR993566A (en) 1951-11-02
FR945236A (en) 1949-04-28
GB654094A (en) 1951-06-06
CH280147A (en) 1952-01-15
DE854985C (en) 1952-11-10
US2585804A (en) 1952-02-12
GB611858A (en) 1948-11-04

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