GB1217469A - Transformer power supply for microwave generators - Google Patents

Transformer power supply for microwave generators

Info

Publication number
GB1217469A
GB1217469A GB21781/69A GB2178169A GB1217469A GB 1217469 A GB1217469 A GB 1217469A GB 21781/69 A GB21781/69 A GB 21781/69A GB 2178169 A GB2178169 A GB 2178169A GB 1217469 A GB1217469 A GB 1217469A
Authority
GB
United Kingdom
Prior art keywords
pulses
magnetron
trains
anode
train
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
GB21781/69A
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.)
Bowmar TIC Inc
Original Assignee
Bowmar TIC 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 Bowmar TIC Inc filed Critical Bowmar TIC Inc
Publication of GB1217469A publication Critical patent/GB1217469A/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
    • H05B6/68—Circuits for monitoring or control
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B9/00—Generation of oscillations using transit-time effects
    • H03B9/01—Generation of oscillations using transit-time effects using discharge tubes
    • H03B9/10—Generation of oscillations using transit-time effects using discharge tubes using a magnetron
    • 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
    • H05B6/662—Aspects related to the boost transformer of the microwave heating apparatus
    • 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
    • H05B6/68—Circuits for monitoring or control
    • H05B6/687—Circuits for monitoring or control for cooking

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microwave Tubes (AREA)
  • Control Of High-Frequency Heating Circuits (AREA)

Abstract

1,217,469. Supply systems for magnetrons. BOWMAR TIC Inc. 29 April, 1969 [26 March, 1969], No. 21781/69. Heading H2H. The supply voltage for the anode of a magnetron 24 used in an electric cooking apparatus comprises means for producing one or two trains of current pulses whereby the energy output of the magnetron may be varied. The system includes two constant current transformers 10, 12, the primary windings of which are connected to an A.C. supply 20, one through a switch 22, and the secondary windings of which are connected to the anode 34 of the magnetron by way of separate full-wave rectifying bridges, diodes 40, 42 being common to both bridges and the other arms of which are formed by capacitors. With the switch 22 open only one train of pulses arrives at the anode of the magnetron and with the switch closed two trains arrive thereat. With full wave rectifying bridges as in Fig. 1, the two trains of pulses are coincident so producing pulses having twice the amplitude of the pulses in a single train but when halfwave rectifying devices are used the pulses of the two trains are not coincident thus the resulting pulse train comprises twice the number of pulses present in a single train.
GB21781/69A 1969-03-26 1969-04-29 Transformer power supply for microwave generators Expired GB1217469A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US81067169A 1969-03-26 1969-03-26

Publications (1)

Publication Number Publication Date
GB1217469A true GB1217469A (en) 1970-12-31

Family

ID=25204389

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21781/69A Expired GB1217469A (en) 1969-03-26 1969-04-29 Transformer power supply for microwave generators

Country Status (2)

Country Link
US (1) US3584288A (en)
GB (1) GB1217469A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2327805A (en) * 1997-07-31 1999-02-03 Daewoo Electronics Co Ltd Generating microwave frequency energy

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5232112B2 (en) * 1972-02-03 1977-08-19
US3902099A (en) * 1973-09-24 1975-08-26 Advance Transformer Co Energizing circuit for magnetron using parallel transformers
US4175246A (en) * 1978-02-27 1979-11-20 Advance Transformer Company Energizing circuit for magnetron using dual transformer secondaries
DE3751770T2 (en) * 1986-09-20 1996-11-14 Canon Kk Power source apparatus
US5237140A (en) * 1990-05-25 1993-08-17 Sawafuji Electric Co., Ltd. a-c/d-c microwave oven
US5636792A (en) * 1995-02-09 1997-06-10 Lockheed Martin Corporation Dye marker for agricultural row guidance
KR20140114547A (en) * 2013-03-19 2014-09-29 엘지전자 주식회사 High voltage trans of cooking device
US9444346B2 (en) * 2013-10-17 2016-09-13 Futurewei Technologies, Inc. Apparatus and efficiency point tracking method for high efficiency resonant converters

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1312007A (en) * 1961-11-02 1962-12-14 Stabilized rectifier
BE622740A (en) * 1961-09-21
US3247394A (en) * 1962-07-24 1966-04-19 Gen Precision Inc Electronic digital computer power supply
US3470942A (en) * 1966-12-10 1969-10-07 Sanyo Electric Co Microwave heating apparatus and method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2327805A (en) * 1997-07-31 1999-02-03 Daewoo Electronics Co Ltd Generating microwave frequency energy
US5883368A (en) * 1997-07-31 1999-03-16 Daewoo Electronics Co., Ltd. Microwave frequency energy generating apparatus provided with a voltage converting means

Also Published As

Publication number Publication date
US3584288A (en) 1971-06-08

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