GB673851A - Improvements in or relating to electrical filter circuits - Google Patents
Improvements in or relating to electrical filter circuitsInfo
- Publication number
- GB673851A GB673851A GB1498649A GB1498649A GB673851A GB 673851 A GB673851 A GB 673851A GB 1498649 A GB1498649 A GB 1498649A GB 1498649 A GB1498649 A GB 1498649A GB 673851 A GB673851 A GB 673851A
- Authority
- GB
- United Kingdom
- Prior art keywords
- capacity
- condenser
- capacities
- valves
- valve
- 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
- H03F1/42—Modifications of amplifiers to extend the bandwidth
- H03F1/48—Modifications of amplifiers to extend the bandwidth of aperiodic amplifiers
- H03F1/50—Modifications of amplifiers to extend the bandwidth of aperiodic amplifiers with tubes only
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
673,851. Electric filters. ELECTRIC & MUSICAL INDUSTRIES, Ltd. June 5, 1950 [June 3, 1949], No. 14986/49. Class 40 (viii). [Also in Group XL (c)] In an electrical filter having input and output shunt capacities, part of these are constituted by the electrodes of a condenser having a movable element which can be adjusted to vary their ratio and also their total. As shown, part of the input and output shunt capacities of a valve coupling network are due to the inherent capacities of valves 15 and 17. The capacity of the left-hand components of variable condenser 16 is connected in parallel with the capacity of valve 17, while the capacity of the right hand components of condenser 16 in series with coupling circuit 14 and 20 is in parallel with the capacity of valve 15. These variable capacities permit ready compensation adjustment of the filter when fresh valves are substituted for valves 15 and 17 with consequent slight alteration in capacity. The filter is completed by resistance 7 and inductance 6, a condenser 12 grounding this part for alternating current. The condenser 16 may be of the kind described in Fig. 2 of Specification 648,228, [Group XXXVI].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1498649A GB673851A (en) | 1949-06-03 | 1949-06-03 | Improvements in or relating to electrical filter circuits |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1498649A GB673851A (en) | 1949-06-03 | 1949-06-03 | Improvements in or relating to electrical filter circuits |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB673851A true GB673851A (en) | 1952-06-11 |
Family
ID=10051055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1498649A Expired GB673851A (en) | 1949-06-03 | 1949-06-03 | Improvements in or relating to electrical filter circuits |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB673851A (en) |
-
1949
- 1949-06-03 GB GB1498649A patent/GB673851A/en not_active Expired
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