GB191723A - Improvements in or relating to magnetic modulators for high frequency currents - Google Patents
Improvements in or relating to magnetic modulators for high frequency currentsInfo
- Publication number
- GB191723A GB191723A GB248/23A GB24823A GB191723A GB 191723 A GB191723 A GB 191723A GB 248/23 A GB248/23 A GB 248/23A GB 24823 A GB24823 A GB 24823A GB 191723 A GB191723 A GB 191723A
- Authority
- GB
- United Kingdom
- Prior art keywords
- wound
- winding
- high frequency
- opposition
- frequency winding
- 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
- 238000004804 winding Methods 0.000 abstract 5
- 230000001939 inductive effect Effects 0.000 abstract 2
- 230000003292 diminished effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 230000011664 signaling Effects 0.000 abstract 1
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 Or Transformers For Communication (AREA)
- Transmitters (AREA)
Abstract
191,723. British Thomson-Houston Co., Ltd., (Assignees of Austin, E.). Jan. 12, 1922, [Convention date]. Inductances.-Relates to magnetic modulators for wireless signalling of the kind described in Specification 7151/13. In order to lessen the net inductive variation in the high-frequency winding, when this is directly in series with the aerial system, as shown in Fig. 1, the winding is split into two portions 5, 6, Fig. 2, which are wound in opposition. In this way the total changes in the inductive value of the high-frequency winding created by the lowfrequency variations of the control circuit containing the microphone 10 are not sufficient to detune the aerial system 7 to any considerable extent, and therefore distortion effects'are greatly diminished. As shown in Fig. 2, the magnetizing or control windings 1, 2 are wound around the two legs 3, 4 of a closed laminated core. One portion 5 of the high frequency winding is wound in opposition to the other portion 6.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US528846A US1449878A (en) | 1922-01-12 | 1922-01-12 | Modulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB191723A true GB191723A (en) | 1924-02-21 |
Family
ID=24107426
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB248/23A Expired GB191723A (en) | 1922-01-12 | 1923-01-03 | Improvements in or relating to magnetic modulators for high frequency currents |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US1449878A (en) |
| FR (1) | FR556023A (en) |
| GB (1) | GB191723A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2888637A (en) * | 1955-03-17 | 1959-05-26 | Sperry Rand Corp | Radio frequency or carrier type transverse magnetic amplifier using squarewave power |
| NL293271A (en) * | 1962-05-25 | 1900-01-01 |
-
1922
- 1922-01-12 US US528846A patent/US1449878A/en not_active Expired - Lifetime
- 1922-09-13 FR FR556023D patent/FR556023A/en not_active Expired
-
1923
- 1923-01-03 GB GB248/23A patent/GB191723A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US1449878A (en) | 1923-03-27 |
| FR556023A (en) | 1923-07-10 |
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