GB894987A - Improvements in or relating to high-frequency apparatus - Google Patents
Improvements in or relating to high-frequency apparatusInfo
- Publication number
- GB894987A GB894987A GB3211/59A GB321159A GB894987A GB 894987 A GB894987 A GB 894987A GB 3211/59 A GB3211/59 A GB 3211/59A GB 321159 A GB321159 A GB 321159A GB 894987 A GB894987 A GB 894987A
- Authority
- GB
- United Kingdom
- Prior art keywords
- arms
- insulators
- spindle
- bearing
- loaded contact
- 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
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F21/00—Variable inductances or transformers of the signal type
- H01F21/005—Inductances without magnetic core
-
- 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
- H05B6/46—Dielectric heating
- H05B6/48—Circuits
- H05B6/50—Circuits for monitoring or control
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Induction Heating (AREA)
- Recording Or Reproducing By Magnetic Means (AREA)
Abstract
894,987. Transformers. PHILIPS ELECTRICAL INDUSTRIES Ltd. Jan. 29, 1959 [Feb. 1, 1958], No. 3211/59. Class 38 (2). [Also in Group XL (c)] A 40 Mc/s. transformer comprises two single. turn coils 2, 14 of copper strip secured to each other by insulators 18 and to a base by insulators 19. A conjoint insulating control-spindle 15 varies the effective inductance of the coils in opposite senses by the rotation of radial arms 16, 17, respectively provided with spring-loaded contact pins 33, 34, respectively, to afford coil tappings. The arms 16, 17 are connected each to one of the input and output leads 36, 37, respectively; by fixed plates 25, 26, respectively, bearing spring-loaded contact-pins such as 35- bearing on the sleeves 23, 24, by which the arms 16, 17 are attached to the spindle 15.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL224589 | 1958-02-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB894987A true GB894987A (en) | 1962-04-26 |
Family
ID=19751110
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3211/59A Expired GB894987A (en) | 1958-02-01 | 1959-01-29 | Improvements in or relating to high-frequency apparatus |
Country Status (6)
Country | Link |
---|---|
US (1) | US2956145A (en) |
CH (1) | CH371534A (en) |
DE (1) | DE1087729B (en) |
FR (1) | FR1220176A (en) |
GB (1) | GB894987A (en) |
NL (2) | NL224589A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3332826A (en) * | 1962-10-16 | 1967-07-25 | Kabar Mfg Corp | Tear sealing apparatus |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2551756A (en) * | 1944-07-21 | 1951-05-08 | Mittelmann Eugene | High-frequency heating method and apparatus |
US2415799A (en) * | 1945-03-09 | 1947-02-11 | Stevens Arnold Company Inc | Automatic means for controlling the power fed to an oscillator load |
GB607339A (en) * | 1946-01-30 | 1948-08-30 | Static Condenser Co Ltd | Improvements relating to radio-frequency electrical heating apparatus |
DE951731C (en) * | 1949-03-13 | 1956-10-31 | Lorenz C Ag | Tuning device consisting of a parallel line system with a grinder |
DE845680C (en) * | 1950-05-04 | 1952-08-04 | Lorenz C Ag | Device on devices for the heat treatment of dielectric materials in the high-frequency capacitor field, in particular hot pressing, for their adaptation to the energy supply line and adjustment in the resonance range |
-
0
- NL NL100592D patent/NL100592C/xx active
- NL NL224589D patent/NL224589A/xx unknown
-
1959
- 1959-01-09 US US785831A patent/US2956145A/en not_active Expired - Lifetime
- 1959-01-28 DE DEN16183A patent/DE1087729B/en active Pending
- 1959-01-29 CH CH6887959A patent/CH371534A/en unknown
- 1959-01-29 GB GB3211/59A patent/GB894987A/en not_active Expired
- 1959-01-30 FR FR785418A patent/FR1220176A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
CH371534A (en) | 1963-08-31 |
US2956145A (en) | 1960-10-11 |
DE1087729B (en) | 1960-08-25 |
NL100592C (en) | |
NL224589A (en) | |
FR1220176A (en) | 1960-05-23 |
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