GB2263025B - Improvements in or relating to proximity switches - Google Patents

Improvements in or relating to proximity switches

Info

Publication number
GB2263025B
GB2263025B GB9127570A GB9127570A GB2263025B GB 2263025 B GB2263025 B GB 2263025B GB 9127570 A GB9127570 A GB 9127570A GB 9127570 A GB9127570 A GB 9127570A GB 2263025 B GB2263025 B GB 2263025B
Authority
GB
United Kingdom
Prior art keywords
relating
proximity switches
proximity
switches
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 - Fee Related
Application number
GB9127570A
Other versions
GB2263025A (en
GB9127570D0 (en
Inventor
Douglas William Hudson Calder
Arthur James Bizley
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.)
Schneider Electric USA Inc
Original Assignee
Square D 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 Square D Co filed Critical Square D Co
Priority to GB9127570A priority Critical patent/GB2263025B/en
Publication of GB9127570D0 publication Critical patent/GB9127570D0/en
Priority to US08/244,827 priority patent/US5463354A/en
Priority to EP93902773A priority patent/EP0619888A4/en
Priority to PCT/US1992/011233 priority patent/WO1993013436A1/en
Publication of GB2263025A publication Critical patent/GB2263025A/en
Application granted granted Critical
Publication of GB2263025B publication Critical patent/GB2263025B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • H03K17/953—Proximity switches using a magnetic detector using inductive coils forming part of an oscillator
    • H03K17/9535—Proximity switches using a magnetic detector using inductive coils forming part of an oscillator with variable amplitude
GB9127570A 1991-12-31 1991-12-31 Improvements in or relating to proximity switches Expired - Fee Related GB2263025B (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB9127570A GB2263025B (en) 1991-12-31 1991-12-31 Improvements in or relating to proximity switches
US08/244,827 US5463354A (en) 1991-12-31 1992-12-28 Proximity switches including long tail pair with emitter follower feedback
EP93902773A EP0619888A4 (en) 1991-12-31 1992-12-28 Oscillator and rectifier circuits for proximity switches.
PCT/US1992/011233 WO1993013436A1 (en) 1991-12-31 1992-12-28 Oscillator and rectifier circuits for proximity switches

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9127570A GB2263025B (en) 1991-12-31 1991-12-31 Improvements in or relating to proximity switches

Publications (3)

Publication Number Publication Date
GB9127570D0 GB9127570D0 (en) 1992-02-19
GB2263025A GB2263025A (en) 1993-07-07
GB2263025B true GB2263025B (en) 1996-01-03

Family

ID=10706943

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9127570A Expired - Fee Related GB2263025B (en) 1991-12-31 1991-12-31 Improvements in or relating to proximity switches

Country Status (3)

Country Link
EP (1) EP0619888A4 (en)
GB (1) GB2263025B (en)
WO (1) WO1993013436A1 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2219862A (en) * 1985-09-24 1989-12-20 Square D Co Low leakage A.C. proximity switch circuit

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3609580A (en) * 1969-11-14 1971-09-28 Westinghouse Electric Corp Electrical sensing apparatus
DE3327188A1 (en) * 1983-07-28 1985-02-14 Gebhard Balluff Fabrik feinmechanischer Erzeugnisse GmbH & Co, 7303 Neuhausen SELF-TESTING PROXIMITY SWITCH
JP2540923B2 (en) * 1988-11-30 1996-10-09 オムロン株式会社 Proximity switch and its oscillation circuit
EP0404065A1 (en) * 1989-06-21 1990-12-27 Omron Corporation Sensor having an oscillation circuit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2219862A (en) * 1985-09-24 1989-12-20 Square D Co Low leakage A.C. proximity switch circuit

Also Published As

Publication number Publication date
EP0619888A1 (en) 1994-10-19
GB2263025A (en) 1993-07-07
GB9127570D0 (en) 1992-02-19
WO1993013436A1 (en) 1993-07-08
EP0619888A4 (en) 1995-07-26

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19961231