GB605427A - Improvements in electron discharge tube amplifiers - Google Patents
Improvements in electron discharge tube amplifiersInfo
- Publication number
- GB605427A GB605427A GB34842/45A GB3484245A GB605427A GB 605427 A GB605427 A GB 605427A GB 34842/45 A GB34842/45 A GB 34842/45A GB 3484245 A GB3484245 A GB 3484245A GB 605427 A GB605427 A GB 605427A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- frequency
- valves
- filters
- frequencies
- 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
- 230000005540 biological transmission Effects 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/4446—IF amplifier circuits specially adapted for B&W TV
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Amplifiers (AREA)
Abstract
605,427. Two-way transmission. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Dec. 22, 1945, No. 34842. Convention date, Dec. 23, 1944. [Class 40 (iv)] [Also in Group XL (c)] A circuit for amplifying two frequencies comprises a pair of cathode coupled valves a firstfrequency f1 being applied to the input of the first valve and a second frequency f2 to the second valve, the amplified output of the second valve being at the frequency f1 only and of the first valve the frequency f2 only. Input frequencies f1, f2, Fig. 1, are applied through filters 3, 9 having zero impedance at frequencies other than f1 and f2 respectively to the grids of valves 7, 13 coupled by a common cathode load of an inductor 15 and resistor 17. Filters 23, 19 having similar characteristics to filters 3, 9 are connected in the output leads of valves 13, 7 so that valve 7 operates as a cathode follower for frequency f1 driving valve 13 as a grounded grid amplifier, the valves operating in the opposite manner for frequency f2. Further stages may be added, Fig. 2 (not shown).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US605427XA | 1944-12-23 | 1944-12-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB605427A true GB605427A (en) | 1948-07-22 |
Family
ID=22030146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB34842/45A Expired GB605427A (en) | 1944-12-23 | 1945-12-22 | Improvements in electron discharge tube amplifiers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB605427A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE941296C (en) * | 1950-07-28 | 1956-04-05 | Int Standard Electric Corp | Amplifier for electrical oscillations with negative feedback |
-
1945
- 1945-12-22 GB GB34842/45A patent/GB605427A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE941296C (en) * | 1950-07-28 | 1956-04-05 | Int Standard Electric Corp | Amplifier for electrical oscillations with negative feedback |
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