GB2009973A - Control circuit for flat-irons - Google Patents

Control circuit for flat-irons

Info

Publication number
GB2009973A
GB2009973A GB7844014A GB7844014A GB2009973A GB 2009973 A GB2009973 A GB 2009973A GB 7844014 A GB7844014 A GB 7844014A GB 7844014 A GB7844014 A GB 7844014A GB 2009973 A GB2009973 A GB 2009973A
Authority
GB
United Kingdom
Prior art keywords
current
supply
resistor
flat
control circuit
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.)
Withdrawn
Application number
GB7844014A
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.)
Braun GmbH
Original Assignee
Braun GmbH
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 Braun GmbH filed Critical Braun GmbH
Publication of GB2009973A publication Critical patent/GB2009973A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F75/00—Hand irons
    • D06F75/08—Hand irons internally heated by electricity
    • D06F75/26—Temperature control or indicating arrangements
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B9/00—Safety arrangements
    • G05B9/02—Safety arrangements electric
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/1906—Control of temperature characterised by the use of electric means using an analogue comparing device
    • G05D23/1909—Control of temperature characterised by the use of electric means using an analogue comparing device whose output amplitude can only take two discrete values
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
    • G05D23/24—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature the sensing element having a resistance varying with temperature, e.g. a thermistor

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Textile Engineering (AREA)
  • Irons (AREA)
  • Control Of Temperature (AREA)
  • Control Of Resistance Heating (AREA)

Abstract

In an electrical control circuit for a flat-iron a sensing resistor 7 has a resistance which depends upon the temperature of the heating element 2 and the voltage drop across the resistor 7 is compared with a reference voltage adjustable for different required temperatures, to control the supply of current to the element 2. A current sensor 22 monitors current flow through resistor 7 and blocks the supply of current to the element 2 should the current flow be below a pre-set limit. The circuit may alternatively be arranged to block the supply of current to the element 2 if the sensing resistor current is above a pre-set limit or outside pre-set upper and lower limits. The means for detecting whether the monitored current is outside the specified limit(s) is a differential amplifier comprising two Darlington-connected pairs of transisors. <IMAGE>
GB7844014A 1977-11-11 1978-11-10 Control circuit for flat-irons Withdrawn GB2009973A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19772750545 DE2750545A1 (en) 1977-11-11 1977-11-11 CONTROL CIRCUIT FOR IRON WITH A SENSOR RESISTANCE RESPECTIVE TO THE TEMPERATURE OF THE IRON HEATING

Publications (1)

Publication Number Publication Date
GB2009973A true GB2009973A (en) 1979-06-20

Family

ID=6023561

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7844014A Withdrawn GB2009973A (en) 1977-11-11 1978-11-10 Control circuit for flat-irons

Country Status (5)

Country Link
DE (1) DE2750545A1 (en)
ES (1) ES474969A1 (en)
FR (1) FR2408967A1 (en)
GB (1) GB2009973A (en)
NL (1) NL7811156A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4686352A (en) * 1984-04-27 1987-08-11 John Zink Company Electronic pressing iron
US5463205A (en) * 1994-05-19 1995-10-31 Pentalpha Enterprises Ltd. Photosensitive switching apparatus for an electric appliance
EP0863450A1 (en) * 1997-03-05 1998-09-09 Robert Bosch Gmbh Circuit for the temperature-dependant control of the heating current of seat heaters
WO2002026559A1 (en) * 2000-09-25 2002-04-04 The Bfgoodrich Company Drainmast with integral electronic temperature control

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996008082A1 (en) * 1994-09-07 1996-03-14 Pentalpha Enterprises Limited Automatic power interrupting apparatus for an electric appliance
ES2402498B1 (en) * 2010-08-23 2014-04-07 Bsh Electrodomésticos España, S.A. ELECTRICAL IRONING DEVICE

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4686352A (en) * 1984-04-27 1987-08-11 John Zink Company Electronic pressing iron
US5463205A (en) * 1994-05-19 1995-10-31 Pentalpha Enterprises Ltd. Photosensitive switching apparatus for an electric appliance
US5595672A (en) * 1994-05-19 1997-01-21 Pentalpha Enterprises Ltd. Automatic power interrupting apparatus for an electric appliance
EP0863450A1 (en) * 1997-03-05 1998-09-09 Robert Bosch Gmbh Circuit for the temperature-dependant control of the heating current of seat heaters
WO2002026559A1 (en) * 2000-09-25 2002-04-04 The Bfgoodrich Company Drainmast with integral electronic temperature control

Also Published As

Publication number Publication date
NL7811156A (en) 1979-05-15
DE2750545A1 (en) 1979-05-17
ES474969A1 (en) 1980-02-16
FR2408967A1 (en) 1979-06-08

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)