FR2371085A1 - Circuit destine a creer un champ magnetique ouvert - Google Patents

Circuit destine a creer un champ magnetique ouvert

Info

Publication number
FR2371085A1
FR2371085A1 FR7735279A FR7735279A FR2371085A1 FR 2371085 A1 FR2371085 A1 FR 2371085A1 FR 7735279 A FR7735279 A FR 7735279A FR 7735279 A FR7735279 A FR 7735279A FR 2371085 A1 FR2371085 A1 FR 2371085A1
Authority
FR
France
Prior art keywords
oscillating circuit
magnetic field
open magnetic
create
coil
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.)
Granted
Application number
FR7735279A
Other languages
English (en)
Other versions
FR2371085B1 (fr
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.)
Sachs Systemtechnik GmbH
Original Assignee
Sachs Systemtechnik GmbH
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 Sachs Systemtechnik GmbH filed Critical Sachs Systemtechnik GmbH
Publication of FR2371085A1 publication Critical patent/FR2371085A1/fr
Application granted granted Critical
Publication of FR2371085B1 publication Critical patent/FR2371085B1/fr
Granted 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
    • H05B6/02—Induction heating
    • H05B6/06—Control, e.g. of temperature, of power
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
    • H02M7/5383—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a self-oscillating arrangement
    • H02M7/53832—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a self-oscillating arrangement in a push-pull arrangement

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Induction Heating (AREA)
  • Inverter Devices (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)

Abstract

Ce circuit est du type comprenant au moins deux transistors commandés en push-pull, un premier circuit oscillant parallèle dont la bobine est simultanement la bobine d'induction qui produit le champ magéntique ouvert et qui est relié à l'un des deux transistors, un second circuit oscillant parallèle monté en série avec ce premier circuit oscillant accorde sur une fréquence fondamentale, lequel second circuit oscillant parallèle est accordé sur l'harmonique d'ordre trois de la fréquence fondamentale, les bobines des deux circuits oscillants etant disposées de manière à ne pas s'amortir réciproquement, et des moyens pour fournir un courant de sortie des collecteurs au moment approprié en vue d'obtenir une tension d'allure quasi rectangulaire par addition des deux tensions de résonance qui ont pris naissance. La bobine 18 du second circuit oscillant 15 est disposée à une certaine distance de manière qu'elle ne contribue en aucune manière au champ magnétique ouvert produit.
FR7735279A 1976-11-11 1977-11-10 Circuit destine a creer un champ magnetique ouvert Granted FR2371085A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2651516A DE2651516C2 (de) 1976-11-11 1976-11-11 Schaltung zur Erzeugung eines offenen Magnetfeldes

Publications (2)

Publication Number Publication Date
FR2371085A1 true FR2371085A1 (fr) 1978-06-09
FR2371085B1 FR2371085B1 (fr) 1982-06-04

Family

ID=5992940

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7735279A Granted FR2371085A1 (fr) 1976-11-11 1977-11-10 Circuit destine a creer un champ magnetique ouvert

Country Status (6)

Country Link
US (1) US4177494A (fr)
JP (1) JPS5947875B2 (fr)
DE (1) DE2651516C2 (fr)
FR (1) FR2371085A1 (fr)
GB (1) GB1591854A (fr)
IT (1) IT1091456B (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0075176A2 (fr) * 1981-09-18 1983-03-30 Oy Helvar Ballast électronique pour lampes à décharge
FR2542152A1 (fr) * 1983-03-01 1984-09-07 Lluelles Jean Procedes et dispositifs electriques d'alimentation et de controle applicables en particulier aux lampes a decharges
EP0596352A1 (fr) * 1992-11-04 1994-05-11 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Circuit d'alimentation en courant, oscillant librement

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR810001421B1 (ko) * 1980-03-18 1981-10-20 주식회사 금파전자 연구소 전자식 형광등 안정기
GB2127248B (en) * 1982-09-21 1986-07-30 Nat Res Dev Reactive load drive and surge protection
DE3723169A1 (de) * 1987-07-14 1989-01-26 Thomson Brandt Gmbh Transistor-endstufe, insbesondere fuer einen wechselrichter
JPH0370384U (fr) * 1989-11-14 1991-07-15
US6509555B1 (en) 1999-11-03 2003-01-21 Nexicor Llc Hand held induction tool

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3461372A (en) * 1965-01-22 1969-08-12 Int Standard Electric Corp D.c. to a.c. power converter
CA848023A (en) * 1966-08-31 1970-07-28 D. Kaiser Francis High voltage direct current transmission systems
US4017701A (en) * 1972-02-29 1977-04-12 Illinois Tool Works Inc. Induction heating unit with combined tank circuit and heating coil
US3806688A (en) * 1972-04-13 1974-04-23 Westinghouse Electric Corp Induction heat cooking apparatus
US3903469A (en) * 1973-09-27 1975-09-02 Westinghouse Electric Corp Inverting arrangement employing compressed sine waves and class B amplifiers
DE2453924C2 (de) * 1974-11-14 1985-12-05 Sachs Systemtechnik Gmbh, 8720 Schweinfurt Schaltung zur Erzeugung eines offenen Magnetfeldes

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0075176A2 (fr) * 1981-09-18 1983-03-30 Oy Helvar Ballast électronique pour lampes à décharge
EP0075176A3 (en) * 1981-09-18 1984-05-23 Oy Helvar Electronic ballast for a discharge lamp
FR2542152A1 (fr) * 1983-03-01 1984-09-07 Lluelles Jean Procedes et dispositifs electriques d'alimentation et de controle applicables en particulier aux lampes a decharges
EP0596352A1 (fr) * 1992-11-04 1994-05-11 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Circuit d'alimentation en courant, oscillant librement

Also Published As

Publication number Publication date
JPS5947875B2 (ja) 1984-11-21
US4177494A (en) 1979-12-04
FR2371085B1 (fr) 1982-06-04
JPS5360741A (en) 1978-05-31
GB1591854A (en) 1981-06-24
DE2651516A1 (de) 1978-05-18
DE2651516C2 (de) 1986-03-06
IT1091456B (it) 1985-07-06

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Legal Events

Date Code Title Description
ST Notification of lapse