GB625128A - Improvements in means for controlling the operation and release of electro-magnetic relays - Google Patents

Improvements in means for controlling the operation and release of electro-magnetic relays

Info

Publication number
GB625128A
GB625128A GB2683146A GB2683146A GB625128A GB 625128 A GB625128 A GB 625128A GB 2683146 A GB2683146 A GB 2683146A GB 2683146 A GB2683146 A GB 2683146A GB 625128 A GB625128 A GB 625128A
Authority
GB
United Kingdom
Prior art keywords
relay
resistance
operate
release
barretter
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
GB2683146A
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.)
General Electric Co PLC
Original Assignee
General Electric Co PLC
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 General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB2683146A priority Critical patent/GB625128A/en
Publication of GB625128A publication Critical patent/GB625128A/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
    • H01H47/16—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 conjoint, e.g. additive, operation of the relay

Landscapes

  • Relay Circuits (AREA)

Abstract

625,128. Electromagnetic relays. GENERAL ELECTRIC CO.. Ltd., and OLLERENSHAW, C. Sept. 6, 1946, No. 26831. [Class 38(v)] Relates to arrangements such as in Fig. 1, wherein a relay 14 is enabled to release at a voltage across terminals 12, 13 only slightly less than the voltage needed to operate the relay by means of a barretter-type resistance 10 in parallel with the operating winding of the relay. The, resistance rises with increase in current and is high when the relay operates and low when it releases. For A.C. a rectifier 17 is included in circuit and a further resistance 15, and condenser 16 ensure that the relay releases rapidly should the current source be disconnected. Such an arrangement suffers from the defect that if the barretter burns out, the relay will remain operated when it should release. To remove the defect, according to the invention, a relay is used of the shunt field type, Fig. 3, the operating winding 14 of which is connected as above in parallel with the resistance 10, and the other winding 14<SP>1</SP> of which is connected in series with the resistance. In normal operation the windings co-operate to divert the flux through a magnetic shunt to operate the armature. Neither winding can by itself operate the armature so that if the barretter burns out, the relay releases. In a modification, the resistance 10 is adjustably connected across.part of the primary of a transformer the secondary of which feeds the coil 14.
GB2683146A 1946-09-06 1946-09-06 Improvements in means for controlling the operation and release of electro-magnetic relays Expired GB625128A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2683146A GB625128A (en) 1946-09-06 1946-09-06 Improvements in means for controlling the operation and release of electro-magnetic relays

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2683146A GB625128A (en) 1946-09-06 1946-09-06 Improvements in means for controlling the operation and release of electro-magnetic relays

Publications (1)

Publication Number Publication Date
GB625128A true GB625128A (en) 1949-06-22

Family

ID=10249961

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2683146A Expired GB625128A (en) 1946-09-06 1946-09-06 Improvements in means for controlling the operation and release of electro-magnetic relays

Country Status (1)

Country Link
GB (1) GB625128A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2892133A (en) * 1955-07-19 1959-06-23 Lorain Prod Corp Time-delay relay circuit
US3067410A (en) * 1957-06-05 1962-12-04 Alsacienne De Reglage Thermiqu Automatically controlling electric regulator system of temperature, pressure or moisture

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2892133A (en) * 1955-07-19 1959-06-23 Lorain Prod Corp Time-delay relay circuit
US3067410A (en) * 1957-06-05 1962-12-04 Alsacienne De Reglage Thermiqu Automatically controlling electric regulator system of temperature, pressure or moisture

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