GB930376A - Improvements in high-frequency furnaces - Google Patents

Improvements in high-frequency furnaces

Info

Publication number
GB930376A
GB930376A GB43097/59A GB4309759A GB930376A GB 930376 A GB930376 A GB 930376A GB 43097/59 A GB43097/59 A GB 43097/59A GB 4309759 A GB4309759 A GB 4309759A GB 930376 A GB930376 A GB 930376A
Authority
GB
United Kingdom
Prior art keywords
coil
circuit
parts
microhenrys
microhenry
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
GB43097/59A
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.)
Philips Electrical Industries Ltd
Original Assignee
Philips Electrical Industries Ltd
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 Philips Electrical Industries Ltd filed Critical Philips Electrical Industries Ltd
Publication of GB930376A publication Critical patent/GB930376A/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
    • H05B6/02—Induction heating
    • H05B6/04—Sources of current

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Induction Heating (AREA)

Abstract

930,376. H.F. furnaces. PHILIPS ELECTRICAL INDUSTRIES Ltd. Dec. 18, 1959 [Dec. 22, 1958], No. 43097/59. Class 38 (4). A thermionic oscillator feeding a high-frequency furnace which supplies a low-resistance heating coil 13 through a transformer comprising a coupling coil 11 and a circuit coil 3, 3<SP>1</SP>, is arranged to supply also a high-resistance heating coil 16. The circuit coil may be in two parts with the coil 16 connectible between, and two capacitors 4, 4<SP>1</SP> may be arranged so that some point in the coil 16 is at earth potential. A switch 18, 19 in one position is arranged to shunt a pair of terminals 17 and in another position to shunt the coil 13 and connect the coil 16 in circuit. The switch may have a third position whereby both coils are in circuit at once. In another arrangement the coil 11 may be in two parts each associated with a coil 3 or 3<SP>1</SP>, the two parts being connectible in parallel or series. The inductance of the coil 13 may be between 0.02 microhenrys and 1 microhenry and the inductance of the coil 16 may lie between 1 microhenry and 40 microhenrys.
GB43097/59A 1958-12-22 1959-12-18 Improvements in high-frequency furnaces Expired GB930376A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL234527 1958-12-22

Publications (1)

Publication Number Publication Date
GB930376A true GB930376A (en) 1963-07-03

Family

ID=19751492

Family Applications (1)

Application Number Title Priority Date Filing Date
GB43097/59A Expired GB930376A (en) 1958-12-22 1959-12-18 Improvements in high-frequency furnaces

Country Status (5)

Country Link
US (1) US3021413A (en)
DE (1) DE1136033B (en)
FR (1) FR1245149A (en)
GB (1) GB930376A (en)
NL (2) NL102015C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3651301A (en) * 1968-05-12 1972-03-21 Ncr Co Installation for casting microwire in glass insulation

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3637970A (en) * 1970-07-06 1972-01-25 Ronald J Cunningham Induction heating apparatus
US3740516A (en) * 1972-01-10 1973-06-19 Park Ohio Industries Inc Radio frequency transformer for induction heating installation
AT348017B (en) * 1974-03-20 1979-01-25 Siemens Ag SELF-EXCITED HIGH FREQUENCY GENERATOR
US5824998A (en) * 1995-12-20 1998-10-20 Pulsar Welding Ltd. Joining or welding of metal objects by a pulsed magnetic force
DE29819251U1 (en) * 1998-10-29 2000-02-24 KUKA Schweissanlagen GmbH, 86165 Augsburg Alternator with a tube arrangement
FR2988974B1 (en) * 2012-04-02 2017-09-01 Commissariat Energie Atomique DEVICE FOR GENERATING A HIGH GRADIENT OF TEMPERATURE IN A NUCLEAR FUEL TYPE SAMPLE
FR3011711B1 (en) * 2013-10-03 2015-12-11 Commissariat Energie Atomique DEVICE FOR GENERATING A HIGH GRADIENT OF TEMPERATURE IN A NUCLEAR FUEL TYPE SAMPLE

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE898503C (en) * 1942-12-04 1953-11-30 Deutsche Edelstahlwerke Ag Circuit for electro-inductive heating devices
US2321189A (en) * 1942-12-26 1943-06-08 Induction Heating Corp Induction heating apparatus
US2452365A (en) * 1944-03-01 1948-10-26 Gen Electric Control system
US2551756A (en) * 1944-07-21 1951-05-08 Mittelmann Eugene High-frequency heating method and apparatus
US2593959A (en) * 1949-03-01 1952-04-22 Westinghouse Electric Corp Dielectric heating unit
NL78609C (en) * 1951-01-12

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3651301A (en) * 1968-05-12 1972-03-21 Ncr Co Installation for casting microwire in glass insulation

Also Published As

Publication number Publication date
DE1136033B (en) 1962-09-06
US3021413A (en) 1962-02-13
NL102015C (en)
FR1245149A (en) 1960-11-04
NL234527A (en)

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