GB623181A - Improvements in or relating to signal reproducing apparatus - Google Patents
Improvements in or relating to signal reproducing apparatusInfo
- Publication number
- GB623181A GB623181A GB32364/45A GB3236445A GB623181A GB 623181 A GB623181 A GB 623181A GB 32364/45 A GB32364/45 A GB 32364/45A GB 3236445 A GB3236445 A GB 3236445A GB 623181 A GB623181 A GB 623181A
- Authority
- GB
- United Kingdom
- Prior art keywords
- transformer
- valve
- supersonic frequency
- fed
- over
- 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
- 239000000969 carrier Substances 0.000 abstract 2
- 239000003990 capacitor Substances 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 238000004804 winding Methods 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/44—Arrangements for feeding power to a repeater along the transmission line
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/65—Arrangements characterised by transmission systems for broadcast
- H04H20/76—Wired systems
- H04H20/84—Wired systems combined with power distribution network
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Power Engineering (AREA)
- Electrostatic Spraying Apparatus (AREA)
- Amplifiers (AREA)
Abstract
623,181. Valve circuits. SULLIVAN, B. J., and BECKER, H. W. Nov. 30, 1945, No. 32364. Convention date, May 15, 1944. [Class 40 (vi)] [Also in Group XXXIX] Energy at supersonic frequency, together with D.C. and modulated carriers is supplied over lines 10, 11, the supersonic frequency being applied over transformer 18 to heat the filament of valve 12. The carriers are fed over potentiometer 31 to transformer 32, 41, tuned by capacitors which are selected by switches 38, 49, the selected carrier being demodulated by the valve, energy at the modulation frequency being fed to a reproducing device 26. The D.C. is fed over the tuned circuit 16 for rejecting carrier frequencies and the transformer 18 to the anode and screen grid circuits. In a modification, Fig. 2 (not shown), the anode and screen grid supplies are obtained by rectifying the supersonic frequency from a further winding on transformer 18.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US535694A US2389949A (en) | 1944-05-15 | 1944-05-15 | Signal reproducing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB623181A true GB623181A (en) | 1949-05-13 |
Family
ID=24135372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB32364/45A Expired GB623181A (en) | 1944-05-15 | 1945-11-30 | Improvements in or relating to signal reproducing apparatus |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2389949A (en) |
| GB (1) | GB623181A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2491244A (en) * | 1946-04-27 | 1949-12-13 | Harry W Becker | Signal receiving and transmitting apparatus |
| US2806082A (en) * | 1952-10-31 | 1957-09-10 | Woods Edward Farrington | Means for detecting and indicating the activities of bees and conditions in beehives |
-
1944
- 1944-05-15 US US535694A patent/US2389949A/en not_active Expired - Lifetime
-
1945
- 1945-11-30 GB GB32364/45A patent/GB623181A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2389949A (en) | 1945-11-27 |
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