GB907189A - Improvements in or relating to proximity sensing electric switching devices - Google Patents

Improvements in or relating to proximity sensing electric switching devices

Info

Publication number
GB907189A
GB907189A GB500159A GB500159A GB907189A GB 907189 A GB907189 A GB 907189A GB 500159 A GB500159 A GB 500159A GB 500159 A GB500159 A GB 500159A GB 907189 A GB907189 A GB 907189A
Authority
GB
United Kingdom
Prior art keywords
ferro
movement
capacitor
short
relating
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
GB500159A
Inventor
William Gregson
Roy Walker
Geoffrey Cooper
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.)
Cutler Hammer Europe Ltd
Original Assignee
Brockhurst Igranic Ltd
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 Brockhurst Igranic Ltd filed Critical Brockhurst Igranic Ltd
Priority to GB500159A priority Critical patent/GB907189A/en
Priority to FR792119A priority patent/FR1219949A/en
Priority to BE577722A priority patent/BE577722A/en
Priority to DEB52922A priority patent/DE1119912B/en
Publication of GB907189A publication Critical patent/GB907189A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/945—Proximity switches
    • H03K17/95—Proximity switches using a magnetic detector
    • H03K17/952—Proximity switches using a magnetic detector using inductive coils
    • H03K17/9525—Proximity switches using a magnetic detector using inductive coils controlled by an oscillatory signal
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/945—Proximity switches
    • H03K17/95—Proximity switches using a magnetic detector
    • H03K17/9515—Proximity switches using a magnetic detector using non-linear magnetic devices

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Electronic Switches (AREA)
  • Magnetic Treatment Devices (AREA)

Abstract

907,189. Ferro-resonant circuits. BROOKHIRST IGRANIC Ltd. April 13, 1959 [Feb. 13, 1959], No. 5001/59. Class 40 (9). A series ferro-resonant circuit comprising a linear capacitor C and a saturable inductor S is triggered from a low to a high current state by movement of a permanent magnet towards the inductor or by relative movement between the permanent magnet and a magnetic shunt. The direction of movement is reversed to restore the current to its initial value, the extent of movement necessary being reduced by short-circuiting the capacitor through a transistor t. The ferro-resonant circuit may be energized from a 2 kc/s. supply, and a half-wave rectified output derived from the capacitor which is periodically short-circuited by a 50 c/s. supply applied to the transistor base by way of a saturating transformer T. The short-circuiting equipment may be common to a number of ferro-resonant circuits connected to terminals t<SP>2</SP>, t<SP>3</SP>.
GB500159A 1959-02-13 1959-02-13 Improvements in or relating to proximity sensing electric switching devices Expired GB907189A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB500159A GB907189A (en) 1959-02-13 1959-02-13 Improvements in or relating to proximity sensing electric switching devices
FR792119A FR1219949A (en) 1959-02-13 1959-04-15 Electrical switchgear can be influenced in the vicinity
BE577722A BE577722A (en) 1959-02-13 1959-04-15 Proximity sensitive switch or saturation winding.
DEB52922A DE1119912B (en) 1959-02-13 1959-04-20 Contactless circuit that can be triggered by mechanical movement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB500159A GB907189A (en) 1959-02-13 1959-02-13 Improvements in or relating to proximity sensing electric switching devices

Publications (1)

Publication Number Publication Date
GB907189A true GB907189A (en) 1962-10-03

Family

ID=9787860

Family Applications (1)

Application Number Title Priority Date Filing Date
GB500159A Expired GB907189A (en) 1959-02-13 1959-02-13 Improvements in or relating to proximity sensing electric switching devices

Country Status (4)

Country Link
BE (1) BE577722A (en)
DE (1) DE1119912B (en)
FR (1) FR1219949A (en)
GB (1) GB907189A (en)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1069191B (en) * 1958-07-15 1959-11-19 WesÜnghousc Electric Corporation, East Pittsburgh, Pa. (V. St. A.) Contactless switching device with a settable iron core choke

Also Published As

Publication number Publication date
FR1219949A (en) 1960-05-20
BE577722A (en) 1959-07-31
DE1119912B (en) 1961-12-21

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