GB484458A - Improvements relating to electro magnetic time delay relays - Google Patents

Improvements relating to electro magnetic time delay relays

Info

Publication number
GB484458A
GB484458A GB3166737A GB3166737A GB484458A GB 484458 A GB484458 A GB 484458A GB 3166737 A GB3166737 A GB 3166737A GB 3166737 A GB3166737 A GB 3166737A GB 484458 A GB484458 A GB 484458A
Authority
GB
United Kingdom
Prior art keywords
winding
contacts
current
time delay
relay
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
GB3166737A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston 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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB484458A publication Critical patent/GB484458A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
    • H01H47/02—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay
    • H01H47/18—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay for introducing delay in the operation of the relay
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/28—Modifications for introducing a time delay before switching

Landscapes

  • Relay Circuits (AREA)

Abstract

484,458. Electromagnetic relays. BRITISH THOMSON-HOUSTON CO., Ltd. Nov. 17, 1937, No. 31667. Convention date, Nov. 17, 1936. [Class 38 (v)] Simultaneous operation of contacts s, s<1> from the position shown, causes a steady current to flow through the working winding AI of the relay and an " opposition " current, produced by the discharge of the condenser C and ever diminishing, to fiow through the auxiliary winding AII. The effects of the two currents are, to begin with, equal and opposite but after a time interval, determined by the values of the capacity C and the resistance W, the working winding AI sufficiently overpowers the winding AII to operate the relay contacts. The relay contacts may include a contact a which opens before the others and serves, by completely breaking the current through the winding All, to cause a quick decisive operation of the remaining contacts.
GB3166737A 1936-11-17 1937-11-17 Improvements relating to electro magnetic time delay relays Expired GB484458A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4804458 1936-11-17

Publications (1)

Publication Number Publication Date
GB484458A true GB484458A (en) 1938-05-05

Family

ID=6542545

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3166737A Expired GB484458A (en) 1936-11-17 1937-11-17 Improvements relating to electro magnetic time delay relays

Country Status (1)

Country Link
GB (1) GB484458A (en)

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