GB1139660A - Improvements in or relating to electrical transformers - Google Patents
Improvements in or relating to electrical transformersInfo
- Publication number
- GB1139660A GB1139660A GB43819/67A GB4381967A GB1139660A GB 1139660 A GB1139660 A GB 1139660A GB 43819/67 A GB43819/67 A GB 43819/67A GB 4381967 A GB4381967 A GB 4381967A GB 1139660 A GB1139660 A GB 1139660A
- Authority
- GB
- United Kingdom
- Prior art keywords
- coils
- magnetic layer
- relating
- core
- wound
- 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
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/0153—Electrical filters; Controlling thereof
- H03H7/0161—Bandpass filters
- H03H7/0169—Intermediate frequency filters
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/36—Electric or magnetic shields or screens
- H01F27/366—Electric or magnetic shields or screens made of ferromagnetic material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/288—Shielding
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/36—Electric or magnetic shields or screens
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/0153—Electrical filters; Controlling thereof
- H03H7/0161—Bandpass filters
- H03H7/0169—Intermediate frequency filters
- H03H7/0184—Intermediate frequency filters with ferromagnetic core
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Coils Or Transformers For Communication (AREA)
Abstract
1,139,660. Transformers. TOKO, K.K. 26 Sept., 1967 [7 Oct., 1966], No. 43819/67. Heading H1T. The wire used to wind the coils (2, 2a) (Fig. 2, not shown) of an intermediate-frequency transformer comprises an electrically conductive core 8 and a magnetic layer 9, e.g. pure iron or permalloy, coating the surface of the core 8. An insulating layer 10 may be provided over the magnetic layer. In one embodiment the coils are wound on a former (1) provided around its periphery with radial fins forming therebetween narrow annular grooves (7) in which the coils are spirally wound. Adjusting cores (4) are also provided. The transformer, which includes one or more tuning capacitors (5), is enclosed in a metal casing (3).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6566666 | 1966-10-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1139660A true GB1139660A (en) | 1969-01-08 |
Family
ID=13293530
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB43819/67A Expired GB1139660A (en) | 1966-10-07 | 1967-09-26 | Improvements in or relating to electrical transformers |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE1591737B1 (en) |
GB (1) | GB1139660A (en) |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3003129A (en) * | 1960-05-23 | 1961-10-03 | Gen Dynamics Corp | R.f. transformer design for minimum coupling to shielding cover |
-
1967
- 1967-09-26 GB GB43819/67A patent/GB1139660A/en not_active Expired
- 1967-10-04 DE DE19671591737 patent/DE1591737B1/en active Pending
Also Published As
Publication number | Publication date |
---|---|
DE1591737B1 (en) | 1971-01-28 |
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