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GB1048003A - Improvements relating to electrical control units for electrical heating elements - Google Patents

Improvements relating to electrical control units for electrical heating elements

Info

Publication number
GB1048003A
GB1048003A GB2112862A GB2112862A GB1048003A GB 1048003 A GB1048003 A GB 1048003A GB 2112862 A GB2112862 A GB 2112862A GB 2112862 A GB2112862 A GB 2112862A GB 1048003 A GB1048003 A GB 1048003A
Authority
GB
United Kingdom
Prior art keywords
control unit
current
winding
relay
windings
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
GB2112862A
Inventor
Brian Hills
Robert Stanley Todman
David John Doland
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.)
Morphy Richards Ltd
Morphy Richards NI Ltd
Original Assignee
Morphy Richards Ltd
Morphy Richards NI 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 Morphy Richards Ltd, Morphy Richards NI Ltd filed Critical Morphy Richards Ltd
Priority to GB2112862A priority Critical patent/GB1048003A/en
Publication of GB1048003A publication Critical patent/GB1048003A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/12—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to underload or no-load
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
    • H05B3/34—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater flexible, e.g. heating nets or webs
    • H05B3/342—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater flexible, e.g. heating nets or webs heaters used in textiles

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Resistance Heating (AREA)
  • Control Of Temperature (AREA)

Abstract

1,048,003. Protective systems. MORPHYRICHARDS Ltd. June 4, 1963 [June 1, 1962; July 7, 1962; Aug. 30, 1962], Nos. 21128/62, 26154/62 and 33285/62. Heading H2K. In a circuit comprising an energy or temperature control unit for controlling the current through a heating element, e.g. that of an electric blanket, an electromagnetic protective device is provided to disconnect the element in response to a reduction or interruption of the current not due to operation of the control unit. In one arrangement the device is an electromagnetio relay with opposing windings connected one in series and the other in shunt with the element, so that should the current through the element and series winding be reduced due to a fault the shunt winding opens the relay contacts which are latched open. Interruption or reduction of the current due to the operation of the control unit affects both windings so that the relay is not operated. In other arrangements the device is closed manually and held closed by an electromagnet having a winding which acts as a holding winding when the control unit is operative and one or two further windings to effect the release of the device when the control unit is inoperative and the load current falls.
GB2112862A 1962-06-01 1962-06-01 Improvements relating to electrical control units for electrical heating elements Expired GB1048003A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2112862A GB1048003A (en) 1962-06-01 1962-06-01 Improvements relating to electrical control units for electrical heating elements

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2112862A GB1048003A (en) 1962-06-01 1962-06-01 Improvements relating to electrical control units for electrical heating elements

Publications (1)

Publication Number Publication Date
GB1048003A true GB1048003A (en) 1966-11-09

Family

ID=10157671

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2112862A Expired GB1048003A (en) 1962-06-01 1962-06-01 Improvements relating to electrical control units for electrical heating elements

Country Status (1)

Country Link
GB (1) GB1048003A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101777800A (en) * 2009-01-08 2010-07-14 钱和革 Power supply control circuit with zero power consumption in idle load state

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101777800A (en) * 2009-01-08 2010-07-14 钱和革 Power supply control circuit with zero power consumption in idle load state

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