GB1169817A - Electric Circuits incorporating means to Prevent Overheating - Google Patents

Electric Circuits incorporating means to Prevent Overheating

Info

Publication number
GB1169817A
GB1169817A GB1159567A GB1159567A GB1169817A GB 1169817 A GB1169817 A GB 1169817A GB 1159567 A GB1159567 A GB 1159567A GB 1159567 A GB1159567 A GB 1159567A GB 1169817 A GB1169817 A GB 1169817A
Authority
GB
United Kingdom
Prior art keywords
resistor
lamp
prevent overheating
capacitor
winding
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
GB1159567A
Inventor
Heinrich Brungsberg
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.)
BBC Brown Boveri AG Germany
Original Assignee
Brown Boveri und Cie AG Germany
BBC Brown Boveri AG Germany
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 Brown Boveri und Cie AG Germany, BBC Brown Boveri AG Germany filed Critical Brown Boveri und Cie AG Germany
Publication of GB1169817A publication Critical patent/GB1169817A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/08—Modifications for protecting switching circuit against overcurrent or overvoltage
    • H03K17/081—Modifications for protecting switching circuit against overcurrent or overvoltage without feedback from the output circuit to the control circuit
    • H03K17/0812—Modifications for protecting switching circuit against overcurrent or overvoltage without feedback from the output circuit to the control circuit by measures taken in the control circuit
    • H03K17/08124—Modifications for protecting switching circuit against overcurrent or overvoltage without feedback from the output circuit to the control circuit by measures taken in the control circuit in thyristor switches
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
    • H02H5/04—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature
    • H02H5/042—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature using temperature dependent resistors

Landscapes

  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)

Abstract

1,169,817. Control systems for incandescent lamps. BROWN, BOVERI & CIE A.G. 13 March, 1967 [2 April, 19661, No. 11595/67. Heading H2H. [Also in Division H3] In order to prevent overheating of a circuit including an incandescent lamp 5, the power supply to the lamp is controlled by means including a bi-directional semi-conductor device 1 and a temperature variable resistor 10. The resistor 10 is situated so as to be responsive to the components in the circuit and is electrically connected in a bridge network comprising a variable resistor 11. The output of the bridge charges a capacitor 8 until such time as a second bi-directional semi-conductor device breaks down, whereupon the capacitor 8 discharges through the winding 4 of a so-called pulse transformer to cause a short, high amplitude pulse to be developed in the winding 2 of the transformer. The device 1 thereupon breaks down to pass current to the lamp 5, the period of conduction of the device 1 in a cycle being determined by the setting of resistor 11 and the resistance of the temperature sensitive resistor 10. If desired, the resistor 10 may be replaced by a similar serially connected resistor 9.
GB1159567A 1966-04-02 1967-03-13 Electric Circuits incorporating means to Prevent Overheating Expired GB1169817A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB0086509 1966-04-02

Publications (1)

Publication Number Publication Date
GB1169817A true GB1169817A (en) 1969-11-05

Family

ID=6983400

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1159567A Expired GB1169817A (en) 1966-04-02 1967-03-13 Electric Circuits incorporating means to Prevent Overheating

Country Status (6)

Country Link
BE (1) BE696280A (en)
CH (1) CH452046A (en)
ES (1) ES338190A1 (en)
FR (1) FR1513921A (en)
GB (1) GB1169817A (en)
NL (1) NL6703371A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2178253A (en) * 1985-06-05 1987-02-04 Hayashibara Ken Surge-current preventing circuit

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA924803A (en) * 1969-05-19 1973-04-17 Rca Corporation Protection circuit
FR2137349B1 (en) * 1971-05-13 1974-08-19 Lavaud Josiane

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2178253A (en) * 1985-06-05 1987-02-04 Hayashibara Ken Surge-current preventing circuit
US4710698A (en) * 1985-06-05 1987-12-01 Ken Hayashibara Phase-controlled automatic switching circuit
GB2178253B (en) * 1985-06-05 1989-07-19 Hayashibara Ken Phase-controlled automatic switching circuit

Also Published As

Publication number Publication date
BE696280A (en) 1967-09-01
NL6703371A (en) 1967-10-03
ES338190A1 (en) 1968-04-01
FR1513921A (en) 1968-02-16
CH452046A (en) 1968-05-31

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