ES338190A1 - Electric Circuits incorporating means to Prevent Overheating - Google Patents

Electric Circuits incorporating means to Prevent Overheating

Info

Publication number
ES338190A1
ES338190A1 ES338190A ES338190A ES338190A1 ES 338190 A1 ES338190 A1 ES 338190A1 ES 338190 A ES338190 A ES 338190A ES 338190 A ES338190 A ES 338190A ES 338190 A1 ES338190 A1 ES 338190A1
Authority
ES
Spain
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
ES338190A
Other languages
Spanish (es)
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.)
Lebronze Alloys Germany GmbH
Original Assignee
Busch Jaeger Durener Metallwerke AG
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 Busch Jaeger Durener Metallwerke AG filed Critical Busch Jaeger Durener Metallwerke AG
Publication of ES338190A1 publication Critical patent/ES338190A1/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

Abstract

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.
ES338190A 1966-04-02 1967-03-18 Electric Circuits incorporating means to Prevent Overheating Expired ES338190A1 (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
ES338190A1 true ES338190A1 (en) 1968-04-01

Family

ID=6983400

Family Applications (1)

Application Number Title Priority Date Filing Date
ES338190A Expired ES338190A1 (en) 1966-04-02 1967-03-18 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)

Families Citing this family (3)

* 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
JPS61279915A (en) * 1985-06-05 1986-12-10 Hayashibara Takeshi Automatic phase switch circuit

Also Published As

Publication number Publication date
GB1169817A (en) 1969-11-05
NL6703371A (en) 1967-10-03
BE696280A (en) 1967-09-01
CH452046A (en) 1968-05-31
FR1513921A (en) 1968-02-16

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