GB509843A - Improvements in or relating to phase changing electrical circuit arrangements suitable for use in directional wireless systems - Google Patents
Improvements in or relating to phase changing electrical circuit arrangements suitable for use in directional wireless systemsInfo
- Publication number
- GB509843A GB509843A GB218938A GB218938A GB509843A GB 509843 A GB509843 A GB 509843A GB 218938 A GB218938 A GB 218938A GB 218938 A GB218938 A GB 218938A GB 509843 A GB509843 A GB 509843A
- Authority
- GB
- United Kingdom
- Prior art keywords
- coils
- pair
- phase changing
- circuits
- relating
- 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
- 230000001419 dependent effect Effects 0.000 abstract 1
- 230000003534 oscillatory effect Effects 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R25/00—Arrangements for measuring phase angle between a voltage and a current or between voltages or currents
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Amplifiers (AREA)
Abstract
509,843. Phase changing valve circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., FALLOON, S. W. H. W., and MILLING- TON, G. Jan. 22, 1938, No. 2189. [Class 38 (ii)] [Also in Group XL] An adjustable phase shifting arrangement for use, for example, in feeders to or from individual aerial units of a directive aerial system, or between successive stages of a thermionic valve amplifier comprises two mutually perpendicular coils 1, 2 forming parts of oscillatory circuits tuned to different frequencies lying respectively above and below that of the input A.C. applied at terminals 6, 7. Thus currents in quadrature are produced in the coils 1, 2 and induce in a further pair of coils 3, 4 relatively rotatable with respect to the first pair a current the phase of which is dependent upon the angle between the two pairs of coils. The output may be fed through an amplifier comprising a push-pull pair of valves 14, 15 and transformer 20, as shown. The input may be supplied through a single valve amplifier, Fig. 2 (not shown), or it may be applied in push-pull to the grids of a pair of valves the anode circuits of which respectively include the coils 1, 2 in parallel with a seriesconnected combination of resistance and condenser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB218938A GB509843A (en) | 1938-01-22 | 1938-01-22 | Improvements in or relating to phase changing electrical circuit arrangements suitable for use in directional wireless systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB218938A GB509843A (en) | 1938-01-22 | 1938-01-22 | Improvements in or relating to phase changing electrical circuit arrangements suitable for use in directional wireless systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB509843A true GB509843A (en) | 1939-07-24 |
Family
ID=9735144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB218938A Expired GB509843A (en) | 1938-01-22 | 1938-01-22 | Improvements in or relating to phase changing electrical circuit arrangements suitable for use in directional wireless systems |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB509843A (en) |
-
1938
- 1938-01-22 GB GB218938A patent/GB509843A/en not_active Expired
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