GB624674A - Improvements in and relating to thermionic valve amplifiers - Google Patents
Improvements in and relating to thermionic valve amplifiersInfo
- Publication number
- GB624674A GB624674A GB569947A GB569947A GB624674A GB 624674 A GB624674 A GB 624674A GB 569947 A GB569947 A GB 569947A GB 569947 A GB569947 A GB 569947A GB 624674 A GB624674 A GB 624674A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- capacitor
- current
- anode
- charge
- 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
- 239000003990 capacitor Substances 0.000 abstract 4
- 230000003321 amplification Effects 0.000 abstract 1
- 238000003199 nucleic acid amplification method 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
- H03F3/38—DC amplifiers with modulator at input and demodulator at output; Modulators or demodulators specially adapted for use in such amplifiers
- H03F3/40—DC amplifiers with modulator at input and demodulator at output; Modulators or demodulators specially adapted for use in such amplifiers with tubes only
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Surgical Instruments (AREA)
Abstract
624,674. Valve amplifying circuits. YARBOROUGH, E. H. COOKE-, and BRADWELL, J. A. Feb. 27, 1947, No. 5699. [Class 40 (vi)] In a D.C. amplifier, an A.C. potential applied to an electrode of a valve allows current to flow to charge a capacitor, the D.C. input reducing the charge so that the A.C. output is proportional to the D.C. input. The A.C. and D.C. potentials are applied between terminals 4, 5 and 1, 5 respectively, the capacitor 3 charging until the valve current is reduced to the leakage across the capacitor. When the D.C. increases in a negative sense, pulses of current flow through the valve 2. Since the fundamental frequency has a component due to the anode-cathode capacity, this is rejected by filter 8 which passes one or more of the harmonics. The load resistor 6 may be replaced by a circuit tuned to a harmonic. After A.C. amplification, the signal is rectified to give a D.C. output. The A.C. potential may be applied at the control grid, and the gridcathode capacity may act as the capacitor. The D.C. signal may be applied to the anode of a valve, the A.C. being applied to the cathode or one of the control electrodes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB569947A GB624674A (en) | 1947-02-27 | 1947-02-27 | Improvements in and relating to thermionic valve amplifiers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB569947A GB624674A (en) | 1947-02-27 | 1947-02-27 | Improvements in and relating to thermionic valve amplifiers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB624674A true GB624674A (en) | 1949-06-14 |
Family
ID=9800979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB569947A Expired GB624674A (en) | 1947-02-27 | 1947-02-27 | Improvements in and relating to thermionic valve amplifiers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB624674A (en) |
-
1947
- 1947-02-27 GB GB569947A patent/GB624674A/en not_active Expired
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