GB700162A - Improvements in or relating to electron discharge valve amplifiers - Google Patents
Improvements in or relating to electron discharge valve amplifiersInfo
- Publication number
- GB700162A GB700162A GB1301249A GB1301249A GB700162A GB 700162 A GB700162 A GB 700162A GB 1301249 A GB1301249 A GB 1301249A GB 1301249 A GB1301249 A GB 1301249A GB 700162 A GB700162 A GB 700162A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- resistor
- amplifier
- band
- pass
- 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
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/34—Negative-feedback-circuit arrangements with or without positive feedback
- H03F1/36—Negative-feedback-circuit arrangements with or without positive feedback in discharge-tube amplifiers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
Abstract
700,162. Valve amplifying circuits. POSTMASTER GENERAL. Oct. 20, 1950 [May 16, 1949], No. 13012/49. Class 40 (6) in an amplifier having two or more stages, one being coupled to the next over a parallel combination of inductance, capacity and resistance, a band-pass effect is obtained by negative feedback. The coupling circuit is tuned to the geometrical mean frequency of the pass-band. Circuits L1, C1, R1 and L2, C2, R2 are tuned to the mid-frequency of the pass-band, a resistor R3 common to the cathodes of valve V1, V3 providing negative feedback. The feedback in a four valve amplifier, Fig. 2 (not shown), is apnlied to the grid circuit of valve V1 while the input is applied to the cathode. In modifications, Figs. 3 and 4 (not shown), the resistor R3 is replaced by a series circuit comprising an inductor, capacitor and resistor. The feedback impedance may be replaced by networks of resistors, Fig. 6 (not shown), or a combination of an inductor, capacitor and resistors, Fig. 7 (not shown). Any stage of the amplifier may take the form of a grounded cathode valve driving a grounded grid valve, Fig. 5 (not shown).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1301249A GB700162A (en) | 1949-05-16 | 1949-05-16 | Improvements in or relating to electron discharge valve amplifiers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1301249A GB700162A (en) | 1949-05-16 | 1949-05-16 | Improvements in or relating to electron discharge valve amplifiers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB700162A true GB700162A (en) | 1953-11-25 |
Family
ID=10015211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1301249A Expired GB700162A (en) | 1949-05-16 | 1949-05-16 | Improvements in or relating to electron discharge valve amplifiers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB700162A (en) |
-
1949
- 1949-05-16 GB GB1301249A patent/GB700162A/en not_active Expired
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