GB1094333A - Electric current overload protection device - Google Patents

Electric current overload protection device

Info

Publication number
GB1094333A
GB1094333A GB897265A GB897265A GB1094333A GB 1094333 A GB1094333 A GB 1094333A GB 897265 A GB897265 A GB 897265A GB 897265 A GB897265 A GB 897265A GB 1094333 A GB1094333 A GB 1094333A
Authority
GB
United Kingdom
Prior art keywords
voltage
solid state
resistance condition
circuit
voltage amplifier
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
GB897265A
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.)
Danfoss AS
Original Assignee
Danfoss AS
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 Danfoss AS filed Critical Danfoss AS
Publication of GB1094333A publication Critical patent/GB1094333A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
    • 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
    • H02H3/08—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 excess current
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
    • H03K17/70—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices having only two electrodes and exhibiting negative resistance

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)
  • Protection Of Static Devices (AREA)

Abstract

1,094,333. Semi-conductor switching circuits. DANFOSS A.S. March 2, 1965 [March 3, 1964], No. 8972/65. Heading H3T. [Also in Division H2] An overload protective device comprises a junctionless non-rectifying solid state switching device 20 connected in series with the protected load 16 and operating in a low-resistance condition until the current through it exceeds a threshold value, the device then changing to its high resistance condition. The device remains in its high resistance condition until reset by the application of a voltage exceeding the supply voltage and derived from a voltage amplifier. The solid state switch may be a polycrystalline element consisting of tellurium and an element of Group IV of the Periodic Table. The voltage amplifier may be an impulse transformer, Figs. 2 and 4 (not shown), or a capacitor voltage doubling circuit 21 . . . 24 controlled by a push-button switch 29. The protective circuit and the voltage amplifier circuit may be separate circuits, the solid state device being a plug-in unit which is removed from the protective circuit for resetting.
GB897265A 1964-03-03 1965-03-02 Electric current overload protection device Expired GB1094333A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED43783A DE1249389B (en) 1964-03-03 1964-03-03

Publications (1)

Publication Number Publication Date
GB1094333A true GB1094333A (en) 1967-12-06

Family

ID=7047855

Family Applications (1)

Application Number Title Priority Date Filing Date
GB897265A Expired GB1094333A (en) 1964-03-03 1965-03-02 Electric current overload protection device

Country Status (5)

Country Link
BE (1) BE660574A (en)
DE (1) DE1249389B (en)
FR (1) FR1425875A (en)
GB (1) GB1094333A (en)
NL (1) NL6502560A (en)

Also Published As

Publication number Publication date
NL6502560A (en) 1965-09-06
BE660574A (en) 1965-07-01
DE1249389B (en)
FR1425875A (en) 1966-01-24

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