CA2562989A1 - Magnetic pole insensitive switch circuit - Google Patents

Magnetic pole insensitive switch circuit Download PDF

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Publication number
CA2562989A1
CA2562989A1 CA002562989A CA2562989A CA2562989A1 CA 2562989 A1 CA2562989 A1 CA 2562989A1 CA 002562989 A CA002562989 A CA 002562989A CA 2562989 A CA2562989 A CA 2562989A CA 2562989 A1 CA2562989 A1 CA 2562989A1
Authority
CA
Canada
Prior art keywords
magnetic pole
switch circuit
hall effect
effect sensor
pole insensitive
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.)
Granted
Application number
CA002562989A
Other languages
French (fr)
Other versions
CA2562989C (en
Inventor
Alberto Bilotti
Glenn A. Forrest
Ravi Vig
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.)
Allegro Microsystems Inc
Original Assignee
Individual
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
Priority claimed from US09/338,668 external-priority patent/US6356741B1/en
Application filed by Individual filed Critical Individual
Publication of CA2562989A1 publication Critical patent/CA2562989A1/en
Application granted granted Critical
Publication of CA2562989C publication Critical patent/CA2562989C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)
  • Electronic Switches (AREA)
  • Hall/Mr Elements (AREA)

Abstract

A switch which is magnetic pole insensitive is described. The switch includes a Hall effect sensor coupled to a threshold circuit which provides an output signal indicative of the proximity of magnet, and hence a magnetic field, to the Hall effect sensor regardless of the orientation of the magnet to the Hall effect sensor.
CA002562989A 1998-09-18 1999-09-03 Magnetic pole insensitive switch circuit Expired - Fee Related CA2562989C (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US15693998A 1998-09-18 1998-09-18
US09/156,939 1998-09-18
US09/338,668 US6356741B1 (en) 1998-09-18 1999-06-22 Magnetic pole insensitive switch circuit
US09/338,668 1999-06-22
CA 2343409 CA2343409C (en) 1998-09-18 1999-09-03 Magnetic pole insensitive switch circuit

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CA 2343409 Division CA2343409C (en) 1998-09-18 1999-09-03 Magnetic pole insensitive switch circuit

Publications (2)

Publication Number Publication Date
CA2562989A1 true CA2562989A1 (en) 2000-03-30
CA2562989C CA2562989C (en) 2007-08-21

Family

ID=37545717

Family Applications (2)

Application Number Title Priority Date Filing Date
CA002562989A Expired - Fee Related CA2562989C (en) 1998-09-18 1999-09-03 Magnetic pole insensitive switch circuit
CA002562985A Expired - Fee Related CA2562985C (en) 1998-09-18 1999-09-03 Magnetic pole insensitive switch circuit

Family Applications After (1)

Application Number Title Priority Date Filing Date
CA002562985A Expired - Fee Related CA2562985C (en) 1998-09-18 1999-09-03 Magnetic pole insensitive switch circuit

Country Status (1)

Country Link
CA (2) CA2562989C (en)

Also Published As

Publication number Publication date
CA2562989C (en) 2007-08-21
CA2562985A1 (en) 2000-03-30
CA2562985C (en) 2007-11-06

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