GB1312122A - Protection circuit - Google Patents

Protection circuit

Info

Publication number
GB1312122A
GB1312122A GB3353970A GB3353970A GB1312122A GB 1312122 A GB1312122 A GB 1312122A GB 3353970 A GB3353970 A GB 3353970A GB 3353970 A GB3353970 A GB 3353970A GB 1312122 A GB1312122 A GB 1312122A
Authority
GB
United Kingdom
Prior art keywords
load
resistor
thyristor
july
heated
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
GB3353970A
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.)
RCA Corp
Original Assignee
RCA Corp
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 RCA Corp filed Critical RCA Corp
Publication of GB1312122A publication Critical patent/GB1312122A/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
    • H02H3/08—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
    • H02H3/085—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 making use of a thermal sensor, e.g. thermistor, heated by the excess current

Landscapes

  • Protection Of Generators And Motors (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Protection Of Static Devices (AREA)

Abstract

1312122 Protective arrangements RCA CORPORATION 10 July 1970 [15 July 1969] 33539/70 Heading H2K An overload protective arrangement for a load, e.g. a motor 12, comprises a thyristor, e.g. a triac 15, connected in circuit with the load and a temperature sensitive element 18 effective to control the conduction of the thyristor. As shown, the element 18 is a positive temperature coefficient resistor heated by a wire resistor 13 connected in series with the load. Alternatively the element may be a negative temperature coefficient resistor and heated by a wire resistor connected across the load, Fig. 2 (not shown).
GB3353970A 1969-07-15 1970-07-10 Protection circuit Expired GB1312122A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US84174669A 1969-07-15 1969-07-15

Publications (1)

Publication Number Publication Date
GB1312122A true GB1312122A (en) 1973-04-04

Family

ID=25285601

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3353970A Expired GB1312122A (en) 1969-07-15 1970-07-10 Protection circuit

Country Status (3)

Country Link
DE (1) DE2032632A1 (en)
FR (1) FR2051761B1 (en)
GB (1) GB1312122A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2118790A (en) * 1982-02-16 1983-11-02 Bonar Instr Limited Universal motor control
WO2019086299A1 (en) * 2017-10-26 2019-05-09 Liebherr-Hausgeräte Ochsenhausen GmbH Refrigeration and/or freezing appliance

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1097411B (en) * 1978-07-26 1985-08-31 Star Utensili Elett TORQUE LIMITING DEVICE FOR AN ELECTRIC MOTOR, ESPECIALLY FOR PORTABLE TOOL EQUIPMENT
DE3021689A1 (en) * 1980-06-10 1981-12-17 Metabowerke GmbH & Co, 7440 Nürtingen OVERLOAD PROTECTION FOR THE ENGINE, ESPECIALLY AN ELECTRIC HAND TOOL

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1081585A (en) * 1965-07-20 1967-08-31 Ass Elect Ind Thyristor controlled circuits
FR1506270A (en) * 1965-10-08 1967-12-22 Circuit breaker comprising a relay controlling the opening of the controlled circuit
DE1613734B2 (en) * 1967-10-07 1971-12-02 Danfoss A/S, Nordborg (Dänemark) OVER-TEMPERATURE PROTECTION FOR THE WINDING OF AC MOTORS
GB1187270A (en) * 1967-10-17 1970-04-08 Catylators Ltd Improvements relating to Temperature Control in Electrical Power-Supply Units

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2118790A (en) * 1982-02-16 1983-11-02 Bonar Instr Limited Universal motor control
WO2019086299A1 (en) * 2017-10-26 2019-05-09 Liebherr-Hausgeräte Ochsenhausen GmbH Refrigeration and/or freezing appliance
CN111480274A (en) * 2017-10-26 2020-07-31 利勃海尔-家用电器奥克森豪森有限责任公司 Cooling and/or freezing apparatus

Also Published As

Publication number Publication date
FR2051761B1 (en) 1974-07-12
FR2051761A1 (en) 1971-04-09
DE2032632A1 (en) 1971-02-04

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees