GB681968A - Improvements in or relating to voltage regulators - Google Patents

Improvements in or relating to voltage regulators

Info

Publication number
GB681968A
GB681968A GB8680/50A GB868050A GB681968A GB 681968 A GB681968 A GB 681968A GB 8680/50 A GB8680/50 A GB 8680/50A GB 868050 A GB868050 A GB 868050A GB 681968 A GB681968 A GB 681968A
Authority
GB
United Kingdom
Prior art keywords
granules
column
container
silicon carbide
plunger
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
GB8680/50A
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.)
Space Systems Loral LLC
Original Assignee
Philco Ford Corp
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 Philco Ford Corp filed Critical Philco Ford Corp
Publication of GB681968A publication Critical patent/GB681968A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F3/00—Non-retroactive systems for regulating electric variables by using an uncontrolled element, or an uncontrolled combination of elements, such element or such combination having self-regulating properties
    • G05F3/02—Regulating voltage or current
    • G05F3/08—Regulating voltage or current wherein the variable is dc
    • G05F3/10—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F3/00—Non-retroactive systems for regulating electric variables by using an uncontrolled element, or an uncontrolled combination of elements, such element or such combination having self-regulating properties
    • G05F3/02—Regulating voltage or current
    • G05F3/04—Regulating voltage or current wherein the variable is ac
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C10/00—Adjustable resistors
    • H01C10/10—Adjustable resistors adjustable by mechanical pressure or force
    • H01C10/12—Adjustable resistors adjustable by mechanical pressure or force by changing surface pressure between resistive masses or resistive and conductive masses, e.g. pile type
    • 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
    • H01C7/105—Varistor cores
    • H01C7/118—Carbide, e.g. SiC type

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Nonlinear Science (AREA)
  • Thermistors And Varistors (AREA)

Abstract

681,968. Granular resistances. PHILCO CORPORATION. April 6, 1950 [April 13, 1949], No. 8680/50. Class 37. A voltage regulating element comprises a compact column of aligned silicon carbide granules between end electrodes. The granules are of roughly ellipsoidal form, the longitudinal axis of each of the granules being disposed in substantial alignment with the longitudinal axis of the column. Changes in voltage across such a regulator produce non-linearly related changes of current therethrough in the region in which it provides regulation. A column of silicon carbide granules 15 is enclosed in a cylindrical container 16 of glass or other heattransmissive material. One end of the container 16 is closed by a conducting plug 17, while pressure is applied to the other end of the silicon carbide column by a spring 19 acting on a plunger 18. The whole is enclosed in an insulating cylinder 21 having a screwed cap 22 by which the pressure of the spring 19 may be adjusted. The plug 17 and plunger 18 are provided with terminals 23, 24. In order to align the granules the filling of the container 16 is carried out while a strong axial electric field is applied. Alternatively vibration may be applied to the container 16 during filling, with or without the application of an electric field.
GB8680/50A 1949-04-13 1950-04-06 Improvements in or relating to voltage regulators Expired GB681968A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US681968XA 1949-04-13 1949-04-13

Publications (1)

Publication Number Publication Date
GB681968A true GB681968A (en) 1952-10-29

Family

ID=22081036

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8680/50A Expired GB681968A (en) 1949-04-13 1950-04-06 Improvements in or relating to voltage regulators

Country Status (1)

Country Link
GB (1) GB681968A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2899561A (en) * 1959-08-11 Circuits for use in measuring systems

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2899561A (en) * 1959-08-11 Circuits for use in measuring systems

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