GB1052263A - Improvements relating to Proximity Indicating Devices - Google Patents

Improvements relating to Proximity Indicating Devices

Info

Publication number
GB1052263A
GB1052263A GB3343862A GB3343862A GB1052263A GB 1052263 A GB1052263 A GB 1052263A GB 3343862 A GB3343862 A GB 3343862A GB 3343862 A GB3343862 A GB 3343862A GB 1052263 A GB1052263 A GB 1052263A
Authority
GB
United Kingdom
Prior art keywords
relay
bridge
operate
improvements relating
indicating devices
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
GB3343862A
Inventor
Alan Edgar Wood
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.)
Weir Group PLC
Original Assignee
G&J Weir 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 G&J Weir Ltd filed Critical G&J Weir Ltd
Priority to GB3343862A priority Critical patent/GB1052263A/en
Publication of GB1052263A publication Critical patent/GB1052263A/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
    • H03K17/9537—Proximity switches using a magnetic detector using inductive coils in a resonant circuit
    • H03K17/954—Proximity switches using a magnetic detector using inductive coils in a resonant circuit controlled by an oscillatory signal

Landscapes

  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Electronic Switches (AREA)
  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)

Abstract

1, 052,263. Detecting magnetic bodies. G. & J. WEIR Ltd. July 8, 1963 [Aug. 31, 1962], No. 33438/62. Heading G1N. A proximity switch comprises two coils 61 and 62 wound on a U-shaped core and arranged in opposite limbs of a bridge circuit the third and fourth limbs each being constituted by resistors R1, R2. The two inductances have a capacitor C1, C2 connected in series (or alternatively in parallel) so that the bridge is normally balanced at the supply frequency. If now a magnetic material is brought into the neighbourhood of the air gap the bridge is unbalanced and produces an output signal. This signal may be fed to ancillary equipment such as a computer or, as shown, may be rectified and used to operate a relay RL1. This relay may then operate the second relay RL2.
GB3343862A 1962-08-31 1962-08-31 Improvements relating to Proximity Indicating Devices Expired GB1052263A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3343862A GB1052263A (en) 1962-08-31 1962-08-31 Improvements relating to Proximity Indicating Devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3343862A GB1052263A (en) 1962-08-31 1962-08-31 Improvements relating to Proximity Indicating Devices

Publications (1)

Publication Number Publication Date
GB1052263A true GB1052263A (en) 1966-12-21

Family

ID=1756901

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3343862A Expired GB1052263A (en) 1962-08-31 1962-08-31 Improvements relating to Proximity Indicating Devices

Country Status (1)

Country Link
GB (1) GB1052263A (en)

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