GB1383789A - Circuit protector - Google Patents

Circuit protector

Info

Publication number
GB1383789A
GB1383789A GB5610972A GB5610972A GB1383789A GB 1383789 A GB1383789 A GB 1383789A GB 5610972 A GB5610972 A GB 5610972A GB 5610972 A GB5610972 A GB 5610972A GB 1383789 A GB1383789 A GB 1383789A
Authority
GB
United Kingdom
Prior art keywords
circuit
resistor
division
rectifying circuit
circuit protector
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
GB5610972A
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.)
Goodman Co LP
Original Assignee
Amana Refrigeration Inc
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 Amana Refrigeration Inc filed Critical Amana Refrigeration Inc
Publication of GB1383789A publication Critical patent/GB1383789A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/66—Circuits
    • H05B6/666—Safety circuits
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/74—Switches in which only the opening movement or only the closing movement of a contact is effected by heating or cooling
    • H01H37/76—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material
    • H01H37/764—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material in which contacts are held closed by a thermal pellet
    • H01H37/765—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material in which contacts are held closed by a thermal pellet using a sliding contact between a metallic cylindrical housing and a central electrode
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/04—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for transformers

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Control Of High-Frequency Heating Circuits (AREA)
  • Fuses (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Constitution Of High-Frequency Heating (AREA)

Abstract

1383789 Protective arrangements AMANA REFRIGERATION Inc 5 Dec 1972 [30 March 1972] 56109/72 Heading H2K [Also in Division H1] An arrangement for protecting a microwave heating apparatus 10 energized by a microwave energy generator 28 supplied by a rectifying circuit from a high voltage transformer 20, comprises a circuit protector having a resistor 52 in the secondary circuit controlling a thermallyactuated de-energizing device 62 in the primary circuit. As shown, the rectifying circuit is a voltage doubler circuit formed by diodes 40, 42 and capacitors 44, 46. The resistor 52 is wirewound and in thermal contact with, but electrically isolated from, the thermally actuated device 62. This device has contacts normally maintained closed against spring bias by a fusible mass (see Division H1).
GB5610972A 1972-03-30 1972-12-05 Circuit protector Expired GB1383789A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US23948072A 1972-03-30 1972-03-30

Publications (1)

Publication Number Publication Date
GB1383789A true GB1383789A (en) 1974-02-12

Family

ID=22902330

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5610972A Expired GB1383789A (en) 1972-03-30 1972-12-05 Circuit protector

Country Status (12)

Country Link
US (1) US3717793A (en)
JP (1) JPS5746197B2 (en)
AU (1) AU476766B2 (en)
BE (1) BE793158A (en)
CA (1) CA963141A (en)
CH (1) CH561971A5 (en)
DE (1) DE2261140C3 (en)
FR (1) FR2177705B1 (en)
GB (1) GB1383789A (en)
IT (1) IT977243B (en)
NL (1) NL7300295A (en)
ZA (1) ZA728768B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0655877A3 (en) * 1993-11-19 1995-10-18 Daewoo Electronics Co Ltd Device for preventing a high voltage transformer of a microwave oven from being overheated.

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3824374A (en) * 1971-05-13 1974-07-16 E Mayher Condition responsive disconnect arrangement for electrical cooking equipment
JPS5639037B2 (en) * 1973-08-20 1981-09-10
JPS50100561A (en) * 1973-12-19 1975-08-09
JPS5513917Y2 (en) * 1975-01-08 1980-03-28
JPS52151382U (en) * 1976-05-13 1977-11-16
JPS52166846U (en) * 1976-06-11 1977-12-17
US4096370A (en) * 1977-06-15 1978-06-20 Litton Systems, Inc. Microwave oven door interlock switch system
US4222087A (en) * 1978-08-21 1980-09-09 Hawthorne Industries, Inc. Passive triac output asymmetry detector
US4242713A (en) * 1979-10-25 1980-12-30 Goodrich Edward W Triac output asymmetry detector
US4600875A (en) * 1981-02-17 1986-07-15 Tii Corporation Power supplies with latch-up prevention and automatic back-up
US4390776A (en) * 1982-03-01 1983-06-28 Yane Daryl J Immersion heater
EP0093821B1 (en) * 1982-05-12 1987-05-06 Geberit AG Welding socket
US4885506A (en) * 1984-12-06 1989-12-05 Nilssen Ole K Electronic magnetron power supply
DE3446987A1 (en) * 1984-12-21 1986-07-03 Latvijskij gosudarstvennyj universitet imeni Petra Stučki, Riga Connector for electrical conductors
US4756465A (en) * 1985-04-15 1988-07-12 Latviisky Gosudarstvenny Institut Method of cold welding
JPS6340273A (en) * 1986-08-04 1988-02-20 戸塚　忠男 Cable connection
US4808960A (en) * 1987-11-06 1989-02-28 Therm-O-Disc, Incorporated Thermal cutoff heater
US4821010A (en) * 1987-12-30 1989-04-11 Therm-O-Disc, Incorporated Thermal cutoff heater
CA2422301C (en) * 2001-07-18 2006-08-22 Nec Schott Components Corporation Thermal fuse

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1968198A (en) * 1933-09-22 1934-07-31 Theodore D Gibbs Means for protecting radio receiving sets
US3385956A (en) * 1964-07-30 1968-05-28 Mitsubishi Electric Corp Protective device for electrically warming cloth
JPS42899Y1 (en) * 1964-10-05 1967-01-19
US3396342A (en) * 1965-04-23 1968-08-06 Advance Transformer Co Power supply circuit for continuous wave magnetron operated by pulsed direct current
FR1444909A (en) * 1965-05-28 1966-07-08 Pat & Visseaux Claude Device for the protection of transformers with strong magnetic leakage
US3651371A (en) * 1970-09-03 1972-03-21 Roper Corp Power supply for magnetron in microwave oven or the like

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0655877A3 (en) * 1993-11-19 1995-10-18 Daewoo Electronics Co Ltd Device for preventing a high voltage transformer of a microwave oven from being overheated.
US5625520A (en) * 1993-11-19 1997-04-29 Daewoo Electronics Co., Ltd. Device for preventing a high voltage transformer of a microwave oven from being overheated

Also Published As

Publication number Publication date
AU476766B2 (en) 1976-10-07
DE2261140A1 (en) 1973-10-04
NL7300295A (en) 1973-10-02
AU4970572A (en) 1974-06-06
DE2261140B2 (en) 1979-07-05
FR2177705B1 (en) 1978-02-10
FR2177705A1 (en) 1973-11-09
BE793158A (en) 1973-04-16
JPS4914955A (en) 1974-02-08
DE2261140C3 (en) 1980-03-06
ZA728768B (en) 1973-08-29
IT977243B (en) 1974-09-10
JPS5746197B2 (en) 1982-10-01
US3717793A (en) 1973-02-20
CH561971A5 (en) 1975-05-15
CA963141A (en) 1975-02-18

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee