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GB1462627A - Load energisation control - Google Patents

Load energisation control

Info

Publication number
GB1462627A
GB1462627A GB3574273A GB3574273A GB1462627A GB 1462627 A GB1462627 A GB 1462627A GB 3574273 A GB3574273 A GB 3574273A GB 3574273 A GB3574273 A GB 3574273A GB 1462627 A GB1462627 A GB 1462627A
Authority
GB
United Kingdom
Prior art keywords
load
supply
transistor
july
fed
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
GB3574273A
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.)
Ferranti International PLC
Original Assignee
Ferranti 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 Ferranti PLC filed Critical Ferranti PLC
Priority to GB3574273A priority Critical patent/GB1462627A/en
Priority to JP8591774A priority patent/JPS5535734B2/ja
Publication of GB1462627A publication Critical patent/GB1462627A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F5/00—Systems for regulating electric variables by detecting deviations in the electric input to the system and thereby controlling a device within the system to obtain a regulated output
    • 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
    • G05F1/66—Regulating electric power

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Power Engineering (AREA)
  • Control Of Electrical Variables (AREA)
  • Dc-Dc Converters (AREA)
  • Control Of Voltage And Current In General (AREA)

Abstract

1462627 Automatic regulation of power FERRANTI Ltd 25 July 1974 [26 July 1973] 35742/73 Heading G3X A system for controlling the power consumed by a load includes an arrangement for producing a control signal when the amount of energy supplied reaches a predetermined level. The control signal terminates the application of the supply to the load. As shown, a filament lamp 10 in series with a switching transistor 13 is connected to a supply terminal 12. The supply voltage is fed to a function generator circuit 17 which produces an output approximating the square of the value of the supply voltage and which may comprise a network of resistors and Zener diodes, Figs. 3 and 4 (not shown). The squared voltage signal is fed to an integrator circuit 18 connected to one input of a differential amplifier 22 which changes its output level when the integrator output reaches a reference level set by a potentiometer 23. At this point, the transistor 13 is turned off and is only energized again when a pulse from a clock source 15 closes a switch 21 so as to begin a new integrating cycle. The system operates to maintain a constant lamp brightness. The function generator 17 may include an additional Zener diode which breaks down and causes transistor 13 to turn off if high voltage transients appear at terminal 12. The system may be used to control the brightness of an array of lamps in a display by a multiplexing procedure, Fig. 2 (not shown).
GB3574273A 1973-07-26 1973-07-26 Load energisation control Expired GB1462627A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB3574273A GB1462627A (en) 1973-07-26 1973-07-26 Load energisation control
JP8591774A JPS5535734B2 (en) 1973-07-26 1974-07-26

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3574273A GB1462627A (en) 1973-07-26 1973-07-26 Load energisation control

Publications (1)

Publication Number Publication Date
GB1462627A true GB1462627A (en) 1977-01-26

Family

ID=10381073

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3574273A Expired GB1462627A (en) 1973-07-26 1973-07-26 Load energisation control

Country Status (2)

Country Link
JP (1) JPS5535734B2 (en)
GB (1) GB1462627A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2184872A (en) * 1985-12-30 1987-07-01 Danor Electronics Vehicle lighting system
GB2231178A (en) * 1989-03-31 1990-11-07 Marelli Autronica Display and control unit particularly for a vehicle air-conditioning system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2791443B1 (en) * 1999-03-23 2001-12-28 Valeo Vision VOLTAGE REGULATION SYSTEM FOR LOADS ON-BOARD IN A MOTOR VEHICLE

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS424420Y1 (en) * 1964-12-12 1967-03-10

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2184872A (en) * 1985-12-30 1987-07-01 Danor Electronics Vehicle lighting system
GB2184872B (en) * 1985-12-30 1990-05-23 Danor Electronics Vehicle lighting system
GB2231178A (en) * 1989-03-31 1990-11-07 Marelli Autronica Display and control unit particularly for a vehicle air-conditioning system
GB2231178B (en) * 1989-03-31 1993-05-19 Marelli Autronica An electronic display and control unit for the air conditioning system in a motor vehicle

Also Published As

Publication number Publication date
JPS5535734B2 (en) 1980-09-16
JPS50124144A (en) 1975-09-30

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Legal Events

Date Code Title Description
PS Patent sealed
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee