GB677295A - Inductance unit - Google Patents

Inductance unit

Info

Publication number
GB677295A
GB677295A GB871750A GB871750A GB677295A GB 677295 A GB677295 A GB 677295A GB 871750 A GB871750 A GB 871750A GB 871750 A GB871750 A GB 871750A GB 677295 A GB677295 A GB 677295A
Authority
GB
United Kingdom
Prior art keywords
former
inductance
winding
deposited
capacity
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
GB871750A
Inventor
Alfred Safay Khouri
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.)
Globe Union Inc
Original Assignee
Globe Union Inc
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 Globe Union Inc filed Critical Globe Union Inc
Priority to GB871750A priority Critical patent/GB677295A/en
Publication of GB677295A publication Critical patent/GB677295A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/008—Details of transformers or inductances, in general with temperature compensation
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/46—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates
    • C04B35/462—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates based on titanates
    • C04B35/465—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates based on titanates based on alkaline earth metal titanates
    • 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
    • H01C7/02—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 having positive temperature coefficient
    • H01C7/021—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 having positive temperature coefficient formed as one or more layers or coatings

Landscapes

  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Coils Or Transformers For Communication (AREA)

Abstract

677,295. Radio receiving apparatus. GLOBEUNION, Inc. April 6, 1950, No. 8717/50. Drawings to Specification. Class 40 (v). [Also in Group XXXV] The tuned circuits in radio receiving apparatus comprise an inductance located on a former of a ceramic material having a temperture coefficient of dielectric constant equal in value but opposite in sign to its temperature coefficient of expansion. The inductance coil winding is preferably located in grooves in the surface of the former and may be deposited therein in any known manner such that it is positively locked to the former. If the ambient temperature increases the former and the winding expand thus increasing the inductance of the winding but, due to the negative temperature coefficient of dielectric constant, the self-capacity of the coil decreases and thus the circuit containing the inductance remains tuned at the desired frequency. The ceramic former may take any shape, e.g. tubular or flat, and the winding may alternatively be deposited on the surface thereof, but in this case the interturn capacity is not substantially all through the ceramic material of the former and the temperature compensation will not therefore be' so complete. A theoretical discussion is included in the Specification. Specification 608,579, [Group XXXVI], is referred to.
GB871750A 1950-04-06 1950-04-06 Inductance unit Expired GB677295A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB871750A GB677295A (en) 1950-04-06 1950-04-06 Inductance unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB871750A GB677295A (en) 1950-04-06 1950-04-06 Inductance unit

Publications (1)

Publication Number Publication Date
GB677295A true GB677295A (en) 1952-08-13

Family

ID=9857893

Family Applications (1)

Application Number Title Priority Date Filing Date
GB871750A Expired GB677295A (en) 1950-04-06 1950-04-06 Inductance unit

Country Status (1)

Country Link
GB (1) GB677295A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2913672A (en) * 1956-10-17 1959-11-17 Manning Maxwell & Moore Inc Electromechanical balance unit
GB2000382A (en) * 1977-06-20 1979-01-04 Knogo Corp Target wafer for use in an electronic theft detection system
US5307042A (en) * 1992-02-19 1994-04-26 B&D Liquidation Corp. Search coil frame assembly for metal and method for making same

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2913672A (en) * 1956-10-17 1959-11-17 Manning Maxwell & Moore Inc Electromechanical balance unit
GB2000382A (en) * 1977-06-20 1979-01-04 Knogo Corp Target wafer for use in an electronic theft detection system
DE2826861A1 (en) * 1977-06-20 1979-05-03 Knogo Corp MEASURING OBJECT PLATE FOR AN ELECTRONIC THEFT DETECTION SYSTEM
GB2000382B (en) * 1977-06-20 1982-01-20 Knogo Corp Target wafer for use in an electronic theft detection system
US5307042A (en) * 1992-02-19 1994-04-26 B&D Liquidation Corp. Search coil frame assembly for metal and method for making same
US5365652A (en) * 1992-02-19 1994-11-22 B&D Liquidation Corp. Method for making a search coil frame assembly for metal detectors

Similar Documents

Publication Publication Date Title
US2509758A (en) Electrical condenser
GB677295A (en) Inductance unit
US2281461A (en) Temperature compensating means
US2980797A (en) Variable tuner
US2839684A (en) Automatic frequency control
US2491486A (en) Mercurial column controlled inductance
US2407360A (en) Method of temperature compensating tuned circuits
GB759459A (en) Improvements in or relating to tuned circuits
GB1144265A (en) Electric oscillating circuit or filter element
GB812354A (en) Improvements in or relating to arrangements for tuning a resonant circuit
US3406403A (en) Variable frequency oscillator
JPS5271700A (en) Production of dielectric material for microwave use
GB1182864A (en) Improvements in or relating to Voltage-Controlled Capacitor Arrangements.
FR2322478B1 (en)
GB588310A (en) Improvements in electric high-frequency tuning devices
JPS5686387A (en) Electronic watch
GB765546A (en) Improvements in or relating to inductance coil arrangements
JPS5258302A (en) Electronic tuning circuit
GB919176A (en) Magnetic materials and applications
GB680695A (en) Improvements in devices for controlling the thickness of products in the form of yarns, strips, sheets and the like
GB971315A (en) Electric oscillation generating system
TIMOFEEV High-stability transistor oscillators(High stability transistor oscillators and use of thermostatically controlled single-transistor quartz resonator)
GB713831A (en) Improvements relating to electric oscillatory circuits
JPS5231601A (en) Ultrahigh frequency tuner
GB558246A (en) Remote or local tuning of radio transmitters over broad bandwidths