GB1224208A - Improvements in proximity switches - Google Patents

Improvements in proximity switches

Info

Publication number
GB1224208A
GB1224208A GB3348868A GB3348868A GB1224208A GB 1224208 A GB1224208 A GB 1224208A GB 3348868 A GB3348868 A GB 3348868A GB 3348868 A GB3348868 A GB 3348868A GB 1224208 A GB1224208 A GB 1224208A
Authority
GB
United Kingdom
Prior art keywords
load
casing
switching
carries
circuit
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
GB3348868A
Inventor
David Alexander Wilson
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.)
Johnson Electric International UK Ltd
Original Assignee
Burgess Micro Switch Co 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 Burgess Micro Switch Co Ltd filed Critical Burgess Micro Switch Co Ltd
Priority to GB3348868A priority Critical patent/GB1224208A/en
Priority to DE19691935346 priority patent/DE1935346A1/en
Publication of GB1224208A publication Critical patent/GB1224208A/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
    • H03K17/9505—Constructional details
    • 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
    • H03K17/9537—Proximity switches using a magnetic detector using inductive coils in a resonant circuit
    • H03K17/9542—Proximity switches using a magnetic detector using inductive coils in a resonant circuit forming part of an oscillator
    • H03K17/9547—Proximity switches using a magnetic detector using inductive coils in a resonant circuit forming part of an oscillator with variable amplitude

Landscapes

  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)
  • Electronic Switches (AREA)

Abstract

1,224,208. Proximity switches. BURGESS MICRO SWITCH CO. Ltd. June 25, 1969 [July 12, 1968], No.33488/68. Heading G1N. A proximity switch for detection of ferromagnetic or electrically conducting materials has a ferrite cored coil 12, Fig. 1, forming part of an oscillator circuit, the circuit and subsequent detector and amplifier stages being mounted on boards 16 within a common casing 10. External power is supplied via a cable 24 which also carries the output leads for switching the load. The oscillator output is rectified by diode D1, Fig. 1, and through the Darlington pair T2 controls the current in load Z. The ferrite core, which is E-shaped in cross-section, Fig.3 (not shown), has an adjustable slug for fine setting of the switching distance, and the casing 10, which carries lock nuts 26 for mounting, may be screw-threaded to provide a coarse adjustment when mounted. The load Z may comprise any visual and/or audible indicator, or other switching elements. The casing 10 may be epoxy filled for use in liquids or explosive gases.
GB3348868A 1968-07-12 1968-07-12 Improvements in proximity switches Expired GB1224208A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB3348868A GB1224208A (en) 1968-07-12 1968-07-12 Improvements in proximity switches
DE19691935346 DE1935346A1 (en) 1968-07-12 1969-07-11 Proximity switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3348868A GB1224208A (en) 1968-07-12 1968-07-12 Improvements in proximity switches

Publications (1)

Publication Number Publication Date
GB1224208A true GB1224208A (en) 1971-03-03

Family

ID=10353618

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3348868A Expired GB1224208A (en) 1968-07-12 1968-07-12 Improvements in proximity switches

Country Status (2)

Country Link
DE (1) DE1935346A1 (en)
GB (1) GB1224208A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7271585B2 (en) 2004-12-01 2007-09-18 Simmonds Precision Products, Inc. Method of fabricating a multilayer wiring board proximity sensor

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2634596C2 (en) * 1976-07-31 1985-07-25 Gebr. Happich Gmbh, 5600 Wuppertal Edge protection profile strip
FR2429995A1 (en) * 1978-06-28 1980-01-25 Ducellier & Cie PROXIMITY SENSOR

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7271585B2 (en) 2004-12-01 2007-09-18 Simmonds Precision Products, Inc. Method of fabricating a multilayer wiring board proximity sensor
US7355392B2 (en) 2004-12-01 2008-04-08 Simmonds Precision Products, Inc. Printed circuit card-based proximity sensor and associated method of detecting a proximity of an object

Also Published As

Publication number Publication date
DE1935346A1 (en) 1970-01-22

Similar Documents

Publication Publication Date Title
US4587486A (en) Switch for detecting a magnetic field
GB1477688A (en) Magneto-optical current measuring devices
US3350660A (en) Vicinity detector
GB1494727A (en) Apparatus for supply and control of dc current
GB1159312A (en) A Transformer
GB1215918A (en) Pulse generators
GB1224208A (en) Improvements in proximity switches
GB1006095A (en) Keying devices, particularly for electrical musical instruments
US4322709A (en) Adjustable flux generator a magnetically activated electronic switch
GB1054470A (en)
GB1081575A (en) Improvements in pulse generators
GB1254788A (en) Improvements in or relating to devices for indicating the condition of a switch
US3688290A (en) Telemetering system
GB1130194A (en) Device for detecting the presence in, or the passage through, a given place of metallic objects, more particularly vehicles
GB975853A (en) Electromagnetic switch
GB1204651A (en) Electrical current flow indicating system
SU509397A2 (en) Device for orientation of flat ferromagnetic parts
GB1284127A (en) Improvements in inductive devices
FR2316672A1 (en) Vehicle break-in detector system - uses variation of magnetic field near to electrical conductor whose current varies
GB1129842A (en) A method of and a circuit arrangement for indicating when an electrically conductive liquid reaches a predetermined level
US3237020A (en) Alarm apparatus employing a monostable multivibrator that retains its astable state longer than an input cycle
SU1068959A1 (en) Device for audible warning
GB1283906A (en) Electric bell apparatus
GB1120460A (en) Short-circuit protective device for direct current power transmission lines
FR1504791A (en) Circuit for automatic adjustment of the amplitude of an electrical signal