GB1123191A - Electrical control devices - Google Patents

Electrical control devices

Info

Publication number
GB1123191A
GB1123191A GB407165A GB407165A GB1123191A GB 1123191 A GB1123191 A GB 1123191A GB 407165 A GB407165 A GB 407165A GB 407165 A GB407165 A GB 407165A GB 1123191 A GB1123191 A GB 1123191A
Authority
GB
United Kingdom
Prior art keywords
load
scr
current
bridge
rectifier
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
GB407165A
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.)
ANDREW MICHAEL KEMP
TADEUSZ NOWINA UJEJSKI
Original Assignee
ANDREW MICHAEL KEMP
TADEUSZ NOWINA UJEJSKI
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 ANDREW MICHAEL KEMP, TADEUSZ NOWINA UJEJSKI filed Critical ANDREW MICHAEL KEMP
Priority to GB407165A priority Critical patent/GB1123191A/en
Publication of GB1123191A publication Critical patent/GB1123191A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10—Regulating voltage or current
    • G05F1/12—Regulating voltage or current wherein the variable actually regulated by the final control device is ac
    • G05F1/40—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using discharge tubes or semiconductor devices as final control devices
    • G05F1/44—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using discharge tubes or semiconductor devices as final control devices semiconductor devices only
    • G05F1/45—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using discharge tubes or semiconductor devices as final control devices semiconductor devices only being controlled rectifiers in series with the load
    • G05F1/455—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using discharge tubes or semiconductor devices as final control devices semiconductor devices only being controlled rectifiers in series with the load with phase control

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Control Of Ac Motors In General (AREA)
  • Control Of Multiple Motors (AREA)

Abstract

1,123,191. Supply and converting systems for consumption apparatus; control of motors. A. M. KEMP and T. N. UJEJSKI. 1 Feb., 1966 [29 Jan., 1965], No. 4071/65. Headings H2F, H2H and H2J. A system for controlling the current through a load fed from an A.C. supply S comprises a bridge of rectifier elements D1-D4 across one diagonal of which is connected a silicon controlled rectifier SCR and a phase shifting network R 1 , R 2 , R V , C 2 ; the network controlling the firing point of the rectifier SCR by way of a transistor T, and this firing point being variable by the variable resistor R V . A capacitor C 3 is provided to ensure a current pulse sufficient to fire the SCR. In other embodiments the bridge D 1 -D 4 may be omitted and a pair of reverse connected rectifiers used one or both of which may be of the controlled type. When both are of the controlled type the trigger pulses may be varied oppositely to one another. As shown the load is supplied with alternating current. The load may however be placed in series with the SCR of Fig. 1, thus it will be supplied with direct current. The load may be a blanket, motor, fan, heater, electric drill or a lighting system.
GB407165A 1965-01-29 1965-01-29 Electrical control devices Expired GB1123191A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB407165A GB1123191A (en) 1965-01-29 1965-01-29 Electrical control devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB407165A GB1123191A (en) 1965-01-29 1965-01-29 Electrical control devices

Publications (1)

Publication Number Publication Date
GB1123191A true GB1123191A (en) 1968-08-14

Family

ID=9770189

Family Applications (1)

Application Number Title Priority Date Filing Date
GB407165A Expired GB1123191A (en) 1965-01-29 1965-01-29 Electrical control devices

Country Status (1)

Country Link
GB (1) GB1123191A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2154816A (en) * 1984-02-21 1985-09-11 Northern Blankets Ltd Electrical heating circuits

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2154816A (en) * 1984-02-21 1985-09-11 Northern Blankets Ltd Electrical heating circuits

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