GB270871A - Improvements in and relating to wireless telegraphy and telephony - Google Patents
Improvements in and relating to wireless telegraphy and telephonyInfo
- Publication number
- GB270871A GB270871A GB889826A GB889826A GB270871A GB 270871 A GB270871 A GB 270871A GB 889826 A GB889826 A GB 889826A GB 889826 A GB889826 A GB 889826A GB 270871 A GB270871 A GB 270871A
- Authority
- GB
- United Kingdom
- Prior art keywords
- frequency
- frequency transformer
- valve
- detector
- grid
- 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
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/46—Reflex amplifiers
- H03F3/48—Reflex amplifiers with tubes only
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
Abstract
270,871. Bowden Wire, Ltd., and Nisbet, A. H. April 1, 1926. Thermionic amplifiers and detectors.-In rereflex wireless receivers in which high-frequency .currents are passed to a detector v<1> through a high-frequency transformer, oscillation is controlled by a separate absorption circuit x<1>, y<1> tuned to the same frequency as the grid of a reflex valve v and tightly coupled to the tuned secondary circuit l<3>, c<1> of the high-frequency transforrrer. The secondary of the high-frequency transformer is connected to a. leaky-grid rectifying-valve, the plate circuit of which con- 'tains a reaction coil l<4> and the primary t of a low-frequency transformer. Fixed resistances r<1>, r<2> are used in the filament circuits. Alternatively a crystal detector is used in place of the valve detector. Selectivity may be enhanced by tapping the secondary of the high-frequency transformer. Grid bias is obtained from a batterv b<3> between the secondary t<1> of the low-frequency transformer and the filament f of the re- 'flex valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB889826A GB270871A (en) | 1926-04-01 | 1926-04-01 | Improvements in and relating to wireless telegraphy and telephony |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB889826A GB270871A (en) | 1926-04-01 | 1926-04-01 | Improvements in and relating to wireless telegraphy and telephony |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB270871A true GB270871A (en) | 1927-05-19 |
Family
ID=9861420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB889826A Expired GB270871A (en) | 1926-04-01 | 1926-04-01 | Improvements in and relating to wireless telegraphy and telephony |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB270871A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2632064A (en) * | 1950-09-20 | 1953-03-17 | Bendix Aviat Corp | Pulse amplifier |
-
1926
- 1926-04-01 GB GB889826A patent/GB270871A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2632064A (en) * | 1950-09-20 | 1953-03-17 | Bendix Aviat Corp | Pulse amplifier |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB450247A (en) | Improvements in radio receivers | |
| GB270871A (en) | Improvements in and relating to wireless telegraphy and telephony | |
| US2040221A (en) | Electrical signaling system | |
| GB613099A (en) | Improvements in or relating to input circuits for radio receivers | |
| GB549465A (en) | Improvements in carrier-signal receivers | |
| US1658638A (en) | Wave signaling system | |
| US1770541A (en) | Radiofrequency amplifying system | |
| GB234965A (en) | Improvements in and relating to apparatus for reception of wireless signals and the like | |
| US1921088A (en) | Wave signaling system | |
| US1643015A (en) | Radio receiving circuits | |
| GB258643A (en) | Improvements in or relating to electrical means and systems for the transmission of sound | |
| US1727123A (en) | Radio receiving system | |
| US1948265A (en) | System for amplification | |
| SU77468A3 (en) | UHF receiver | |
| GB425659A (en) | Modulation circuit for use in superheterodyne radio receivers and for like purposes | |
| SU63512A1 (en) | Superheterodyne telegraph receiver | |
| US2097879A (en) | Receiving arrangement | |
| GB160140A (en) | Improvements in wireless receiving systems | |
| GB423772A (en) | Improvements in or relating to thermionic valve arrangements | |
| GB238261A (en) | Improvements in or relating to wireless receiving circuits | |
| GB331191A (en) | Improvements in or relating to radio signal receiving apparatus | |
| GB198052A (en) | Method and apparatus for selectively transferring electrical oscillatory energy | |
| GB249824A (en) | Adjustment means for wireless receiving apparatus | |
| GB276161A (en) | Improvements in and relating to wireless telegraphy and telephony | |
| GB227364A (en) | Improvements in receiving systems for wireless signals |