GB634210A - Means for producing low frequency modulation of a higher frequency current - Google Patents
Means for producing low frequency modulation of a higher frequency currentInfo
- Publication number
- GB634210A GB634210A GB1548249A GB1548249A GB634210A GB 634210 A GB634210 A GB 634210A GB 1548249 A GB1548249 A GB 1548249A GB 1548249 A GB1548249 A GB 1548249A GB 634210 A GB634210 A GB 634210A
- Authority
- GB
- United Kingdom
- Prior art keywords
- windings
- current
- load
- self
- lag
- 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
- H03C—MODULATION
- H03C1/00—Amplitude modulation
- H03C1/08—Amplitude modulation by means of variable impedance element
- H03C1/10—Amplitude modulation by means of variable impedance element the element being a current-dependent inductor
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Coils Of Transformers For General Uses (AREA)
Abstract
634,210. Inductive control systems. HEDSTROM, S. E., and ALLMANNA SVENSKA ELEKTRISKA AKTIEBOLAGET. March 25, 1947, No. 15482/49. Divided out of and addition to 634,196 under which a Specification was laid open to inspection under Sect. 91 of the Acts, Sept. 29, 1947. [Class 38 (iv)] In a system for the low frequency modulation of a higher frequency load current as described in the patent Specification, the modulating windings of the reactors are fed through circuit elements which introduce a lag between current changes in these windings and current changes in the load circuit. As shown in Fig. 1, modulating windings 22 of self-magnetizing reactors 21 through which a load 3 is supplied, are energized by a rectifier 4 shunting the load, the circuit of the windings 22 including a self-heating thermo-negative resistance 9 which in association with a constant resistance 10 causes both the modulation and the desired current lag in the windings 22. The resistor 9 may be additionally heated by the load current. In the arrangement of Fig. 4, current lag in windings 22 is obtained by energizing these from a secondary winding 13 on a gapped core of a reactor 12 fed either from the rectifier 4, as shown, or from across the two self-magnetization rectifiers 24.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1548249A GB634210A (en) | 1947-03-25 | 1947-03-25 | Means for producing low frequency modulation of a higher frequency current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1548249A GB634210A (en) | 1947-03-25 | 1947-03-25 | Means for producing low frequency modulation of a higher frequency current |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB634210A true GB634210A (en) | 1950-03-15 |
Family
ID=10059911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1548249A Expired GB634210A (en) | 1947-03-25 | 1947-03-25 | Means for producing low frequency modulation of a higher frequency current |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB634210A (en) |
-
1947
- 1947-03-25 GB GB1548249A patent/GB634210A/en not_active Expired
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