CA2562985A1 - Magnetic pole insensitive switch circuit - Google Patents

Magnetic pole insensitive switch circuit Download PDF

Info

Publication number
CA2562985A1
CA2562985A1 CA002562985A CA2562985A CA2562985A1 CA 2562985 A1 CA2562985 A1 CA 2562985A1 CA 002562985 A CA002562985 A CA 002562985A CA 2562985 A CA2562985 A CA 2562985A CA 2562985 A1 CA2562985 A1 CA 2562985A1
Authority
CA
Canada
Prior art keywords
magnetic pole
switch circuit
effect sensor
pole insensitive
insensitive switch
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
CA002562985A
Other languages
French (fr)
Other versions
CA2562985C (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 CA2562985A1 publication Critical patent/CA2562985A1/en
Application granted granted Critical
Publication of CA2562985C publication Critical patent/CA2562985C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

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

Abstract

A switch which is magnetic pole insensitive is described. The switch include s 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 Ha ll effect sensor regardless of the orientation of the magnet to the Hall effect sensor .
CA002562985A 1998-09-18 1999-09-03 Magnetic pole insensitive switch circuit Expired - Fee Related CA2562985C (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
CA2562985A1 true CA2562985A1 (en) 2000-03-30
CA2562985C CA2562985C (en) 2007-11-06

Family

ID=37545717

Family Applications (2)

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

Family Applications After (1)

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

Country Status (1)

Country Link
CA (2) CA2562985C (en)

Also Published As

Publication number Publication date
CA2562989A1 (en) 2000-03-30
CA2562989C (en) 2007-08-21
CA2562985C (en) 2007-11-06

Similar Documents

Publication Publication Date Title
CA2343409A1 (en) Magnetic pole insensitive switch circuit
WO2002038930A3 (en) Pedal position sensor using bipolar tapered magnets
EP0294636A3 (en) Mrs current sensor
EP1279928A3 (en) Magnetic field sensor
AU2003263839A1 (en) Integrated current sensor
AU2875589A (en) Magnetic sensor bearing with an adaptive threshold circuit
CA2211060A1 (en) Logic selection circuit
DE69633683D1 (en) Magnetic circuit arrangement with opposing permanent magnets
DE69925309D1 (en) POSTER WITH HALLSONDE
AU6142999A (en) Battery polarity insensitive integrated circuit amplifier
ES8204173A1 (en) Pressure transducer
DE69622132D1 (en) Eddy current brake of the permanent magnet type
AU2001271603A1 (en) Low power magnetic anomaly sensor
AU1140601A (en) An improved current sensing device for low-voltage power circuit breakers
DE3687547D1 (en) NON-CONTACTIVE PROXIMITY SWITCHING DEVICE.
EP0814390A3 (en) Electronic equipment
CA2562985A1 (en) Magnetic pole insensitive switch circuit
WO2004051297A3 (en) Use of a ring magnet to achieve a magnetic sensor pulse train output
AU1645501A (en) Method and circuit arrangement for determining the direction of an external magnetic field
WO2004014104A3 (en) Electroacoustic transducer with built in transducer circuit
AU5973700A (en) Current sensor
AU6322000A (en) Electronic circuit for detecting a change relative to a quiescent condition
DE69703053D1 (en) Electromagnetic transducer with multipolar permanent magnets
WO2001006523A3 (en) Magnet assembly
DE59000164D1 (en) PRESSURE TRANSMITTER.

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed