GB746886A - Amplifier of which the gain characteristics as a function of the frequency are variable as a function of time - Google Patents
Amplifier of which the gain characteristics as a function of the frequency are variable as a function of timeInfo
- Publication number
- GB746886A GB746886A GB358/54A GB35854A GB746886A GB 746886 A GB746886 A GB 746886A GB 358/54 A GB358/54 A GB 358/54A GB 35854 A GB35854 A GB 35854A GB 746886 A GB746886 A GB 746886A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- amplifier
- function
- jan
- grid
- 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
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G7/00—Volume compression or expansion in amplifiers
- H03G7/02—Volume compression or expansion in amplifiers having discharge tubes
- H03G7/04—Volume compression or expansion in amplifiers having discharge tubes incorporating negative feedback
Landscapes
- Amplifiers (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
746,886. Valve amplifying circuits; pulse echo testing systems. COMPAGNIE GENERALE D'ELECTRICITE. Jan. 6, 1954 [Jan. 8, 1953], No. 358/54. Classes 40 (6) and 40 (7). An amplifier for use in the study of echoes produced during the pulse testing of transmission lines comprises an amplifier valve 1 having a cathode negative feedback resistor 3 across which is connected the effective input capacitance of a valve 5 having a capacitor 12 connected between its anode and grid, means 8 being provided to cyclically vary the bias on a second grid of the valve whereby the gain and frequency response of the amplifier valve 1 is varied to correct for the distortion of the pulses. Two stages such as that shown may be arranged in push-pull and a high pass filter may be connected in the output circuit to remove the fundamental and harmonic frequency components of the waveform of the bias variation (Fig. 3, not shown).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR746886X | 1953-01-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB746886A true GB746886A (en) | 1956-03-21 |
Family
ID=9147615
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB358/54A Expired GB746886A (en) | 1953-01-08 | 1954-01-06 | Amplifier of which the gain characteristics as a function of the frequency are variable as a function of time |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB746886A (en) |
-
1954
- 1954-01-06 GB GB358/54A patent/GB746886A/en not_active Expired
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