GB672050A - Improvements in or relating to switching circuits for an inductive electric load - Google Patents

Improvements in or relating to switching circuits for an inductive electric load

Info

Publication number
GB672050A
GB672050A GB4520/50A GB452050A GB672050A GB 672050 A GB672050 A GB 672050A GB 4520/50 A GB4520/50 A GB 4520/50A GB 452050 A GB452050 A GB 452050A GB 672050 A GB672050 A GB 672050A
Authority
GB
United Kingdom
Prior art keywords
switch
relay coil
supplied
relating
reduce
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
GB4520/50A
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.)
Svit np
Original Assignee
Svit np
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 Svit np filed Critical Svit np
Publication of GB672050A publication Critical patent/GB672050A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/54—Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere

Landscapes

  • Electronic Switches (AREA)

Abstract

672,050. Control systems for consumption apparatus ; switching systems. SVIT, NARODNI PODNIK. Feb. 22, 1950 [March 3, 1949], No. 4520/50. Class 38 (iv). To obtain rapid energization of an inductive load 3, such as the electromagnetic clutch on a copying machine tool, supplied from a direct current source 1 upon closure of a switch 4, and also to reduce the arcing at the switch contacts upon opening, the load is supplied through two resistances 2 and 9 to reduce the time constant of the circuit and the relay coil 5 of the actuating switch 4 is connected through a switch 7, frequently operated by the machine, across the switch 4 and resistance 9, the ratio of the resistance values of relay coil 5 to resistor 9 being made about ten but permitting the relay coil to be sufficiently energized when switch 4 closes to maintain this latter switch closed until switch 7 is opened.
GB4520/50A 1949-03-03 1950-02-22 Improvements in or relating to switching circuits for an inductive electric load Expired GB672050A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS672050X 1949-03-03

Publications (1)

Publication Number Publication Date
GB672050A true GB672050A (en) 1952-05-14

Family

ID=5454610

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4520/50A Expired GB672050A (en) 1949-03-03 1950-02-22 Improvements in or relating to switching circuits for an inductive electric load

Country Status (1)

Country Link
GB (1) GB672050A (en)

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