GB572214A - Improvements in or relating to valve circuits for amplifying alternating currents orvoltages - Google Patents
Improvements in or relating to valve circuits for amplifying alternating currents orvoltagesInfo
- Publication number
- GB572214A GB572214A GB2111043A GB2111043A GB572214A GB 572214 A GB572214 A GB 572214A GB 2111043 A GB2111043 A GB 2111043A GB 2111043 A GB2111043 A GB 2111043A GB 572214 A GB572214 A GB 572214A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- resistance
- grid
- anode
- valves
- 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
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 230000010355 oscillation Effects 0.000 abstract 1
- 238000010079 rubber tapping Methods 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/189—High-frequency amplifiers, e.g. radio frequency amplifiers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
Abstract
572,214. Valve amplifying circuits. CINEMA-TELEVISION, Ltd., and WEST, S. S. Dec. 16,1943, No. 21110. [Class 40 (v)] A selective amplifier comprises two valves, each having at least an anode, a cathode, and a control electrode, a frequency-determining circuit connected between the anode of one of said valves and the control electrode of the other valve, and a feedback circuit comprising a'common cathode impedance for said valves. In the arrangement shown in Fig. 1 the valve 1 to which the input is applied is connected to valve 2 by a network 3, 4, 5, 6, the values of which are chosen so that at the frequency of operation the signal at the grid of valve 2 is 180 degrees out of phase with the signal at the grid of valve 1. With the common cathode resistance, this gives the conditions for positive feedback, the magnitude of which is varied by varying resistance 7. In a modification, Fig. 2 (not shown), the resistance 3 and capacity 4 are in series between the anode of 1 and grid of 2 and resistance 6 and capacity 5 are in parallel between the grid of 2 and H.T.-. The resistance 7 is of a magnitude to give negative feedback and a variable tapping is adjusted to give the right degree of negative feedback to prevent oscillation. The RC networks may be replaced by LC networks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2111043A GB572214A (en) | 1943-12-16 | 1943-12-16 | Improvements in or relating to valve circuits for amplifying alternating currents orvoltages |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2111043A GB572214A (en) | 1943-12-16 | 1943-12-16 | Improvements in or relating to valve circuits for amplifying alternating currents orvoltages |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB572214A true GB572214A (en) | 1945-09-27 |
Family
ID=10157389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2111043A Expired GB572214A (en) | 1943-12-16 | 1943-12-16 | Improvements in or relating to valve circuits for amplifying alternating currents orvoltages |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB572214A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2906963A (en) * | 1955-09-29 | 1959-09-29 | Alfred A Wolf | Polypulse generator |
-
1943
- 1943-12-16 GB GB2111043A patent/GB572214A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2906963A (en) * | 1955-09-29 | 1959-09-29 | Alfred A Wolf | Polypulse generator |
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