GB346780A - Improvements in and relating to mains-operated wireless receiving apparatus and the like - Google Patents
Improvements in and relating to mains-operated wireless receiving apparatus and the likeInfo
- Publication number
- GB346780A GB346780A GB136430A GB136430A GB346780A GB 346780 A GB346780 A GB 346780A GB 136430 A GB136430 A GB 136430A GB 136430 A GB136430 A GB 136430A GB 346780 A GB346780 A GB 346780A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mains
- aerial
- series
- connections
- transformer
- 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
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/44—Details of, or arrangements associated with, antennas using equipment having another main function to serve additionally as an antenna, e.g. means for giving an antenna an aesthetic aspect
- H01Q1/46—Electric supply lines or communication lines
Landscapes
- Ac-Ac Conversion (AREA)
Abstract
346,780. Wireless receiving systems. SAVAGE, L. F., 20, Old Compton Street, London, WRIGHT, E. H. M., Limberloft, Coppice Drive, Wraysbury, Buckinghamshire, and RADIOVOLT, Ltd., Kingston Road, Staines, Middlesex. Jan. 14, 1930. Nos. 1364, 14856, and 16082. [Class 40 (v).] In a mains-operated wireless set, one or more of the conductors a of the mains is used as an aerial and another a<1> as an earth. A mains transformer b has two secondaries supplying respectively the high- and low-tension currents, and the aerial and earth connections to the mains are made in parallel with the transformer through two condensers c .. d<1> in series, the one adjacent the mains of high capacity and the other of relatively small capacity. Alternatively a single fixed or variable condenser of small capacity is included in one or both connections (Fig. 2, not shown). To improve the selectivity an auxiliary aerial consisting of a wire or a metallic plate or the like is connected to the aerial circuit. According to modifications the connections to the mains are made indirectly through a high-frequency transformer, Fig. 3 (not shown), or an autotransformer, Fig. 4 (not shown), in series with a condenser, or to a potentiometer, Fig. 5 (not shown), or to the middle point of two resistances or two condensers in series in shunt across the mains, Fig. 6 (not shown).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB136430A GB346780A (en) | 1930-01-14 | 1930-01-14 | Improvements in and relating to mains-operated wireless receiving apparatus and the like |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB136430A GB346780A (en) | 1930-01-14 | 1930-01-14 | Improvements in and relating to mains-operated wireless receiving apparatus and the like |
Publications (1)
Publication Number | Publication Date |
---|---|
GB346780A true GB346780A (en) | 1931-04-14 |
Family
ID=9720723
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB136430A Expired GB346780A (en) | 1930-01-14 | 1930-01-14 | Improvements in and relating to mains-operated wireless receiving apparatus and the like |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB346780A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2327814A (en) * | 1997-07-23 | 1999-02-03 | Siemens Ag | Remote control alarm using power lead as antenna |
-
1930
- 1930-01-14 GB GB136430A patent/GB346780A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2327814A (en) * | 1997-07-23 | 1999-02-03 | Siemens Ag | Remote control alarm using power lead as antenna |
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