GB658167A - Improvements in or relating to valve amplifiers - Google Patents
Improvements in or relating to valve amplifiersInfo
- Publication number
- GB658167A GB658167A GB17485/49A GB1748549A GB658167A GB 658167 A GB658167 A GB 658167A GB 17485/49 A GB17485/49 A GB 17485/49A GB 1748549 A GB1748549 A GB 1748549A GB 658167 A GB658167 A GB 658167A
- Authority
- GB
- United Kingdom
- Prior art keywords
- supply
- valves
- quadrature
- transformer
- phase
- 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
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D3/00—Control of position or direction
- G05D3/12—Control of position or direction using feedback
- G05D3/14—Control of position or direction using feedback using an analogue comparing device
- G05D3/1418—Control of position or direction using feedback using an analogue comparing device with ac amplifier chain
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B11/00—Automatic controllers
- G05B11/01—Automatic controllers electric
- G05B11/012—Automatic controllers electric details of the transmission means
- G05B11/013—Automatic controllers electric details of the transmission means using discharge tubes
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
Abstract
658,167. Valve amplifying circuits. BRITISH THOMSON-HOUSTON CO., Ltd. July 1, 1949, No. 17485. Convention date, July 1, 1948. [Class 40 (vi)] An A.C. operated push-pull amplifier is arranged to discriminate against signals occurring in quadrature with the supply by employing as bias for the valves either a large A.C. in phase with the supply plus a large D.C. or rectified A.C. in quadrature with the supply. The circuits are particularly applicable to systems employing amplifiers where the desired signal varies in amplitude but is either in phase or 180 degrees out of phase with the supply. The valves 1, 2, Fig. 7, are given a large negative bias by battery Ec which is neutralized by a corresponding alternating potential developed across the secondary of transformer 24. The valves are thus sensitized only near the peak of the anode potential, Figs. 8, 9 and 10 (not shown). In a modification, Fig. 11 (not shown), the alternating potential across the secondary of the transformer is rectified to supply the D.C. bias. In a further modification, Fig. 12, the A.C. fed to transformer 30 is in quadrature to that used for the anode supply. The valves 1, 2 are thus sensitized at the peak of the cusps formed by the diodes 35 conducting, which occur at the peaks of the anode supply, Fig. 13 (not shown).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US658167XA | 1948-07-01 | 1948-07-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB658167A true GB658167A (en) | 1951-10-03 |
Family
ID=22065295
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB17485/49A Expired GB658167A (en) | 1948-07-01 | 1949-07-01 | Improvements in or relating to valve amplifiers |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB658167A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3229210A (en) * | 1961-12-28 | 1966-01-11 | North American Aviation Inc | Phase sensitive demodulator operating on bi-polar amplitude modulated signals |
-
1949
- 1949-07-01 GB GB17485/49A patent/GB658167A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3229210A (en) * | 1961-12-28 | 1966-01-11 | North American Aviation Inc | Phase sensitive demodulator operating on bi-polar amplitude modulated signals |
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