GB265612A - Improvements in or relating to thermionic valve circuits - Google Patents
Improvements in or relating to thermionic valve circuitsInfo
- Publication number
- GB265612A GB265612A GB3312/27A GB331227A GB265612A GB 265612 A GB265612 A GB 265612A GB 3312/27 A GB3312/27 A GB 3312/27A GB 331227 A GB331227 A GB 331227A GB 265612 A GB265612 A GB 265612A
- Authority
- GB
- United Kingdom
- Prior art keywords
- coil
- circuit
- condenser
- condensers
- filament
- 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
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 230000005284 excitation Effects 0.000 abstract 1
- 230000003534 oscillatory effect Effects 0.000 abstract 1
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
- H03F1/08—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements
- H03F1/14—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements by use of neutralising means
- H03F1/16—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements by use of neutralising means in discharge-tube amplifiers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
- Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
Abstract
265,612. Telefunken Ges. fiir Drahtlose Telegraphie. Feb. 6, 1926, [Convention date]. Thermionic amplifiers and generators. -Valve transmitters of the self-excited or externally-excited types have the output circuit so arranged that the highfrequency current between the plate and filament passes only through the condenser of the tuned oscillatory circuit whilst the direct current passes through the coil of that circuit. The tuned circuit comprises series condensers a, b and a tapped coil e. One side of the tuned circuit is connected directly to the plate of the valve H, and the other side is connected through a condenser c to the valve grid. This condenser may be set to neutralize the inter-electrode capacity when using external excitation, or may be set out of balance for selfexcitation. The high-tension source f is connected between the filament and a point 'between the two condensers a, b, and the direct-current circuit to the plate is completed by a highfrequency choke coil r and a part of the coil e. The absence of a high-frequency connection between the coil and the earthed filament avoids the formation of subsidiary circuits comprising the coil sections and their capacities to earth. Condensers d selected by switches may be connected across the whole coil e for tuning. An additional coil may also if desired be connected in parallel with the coil e.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE265612X | 1926-02-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB265612A true GB265612A (en) | 1927-08-11 |
Family
ID=5995243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3312/27A Expired GB265612A (en) | 1926-02-06 | 1927-02-05 | Improvements in or relating to thermionic valve circuits |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US1863798A (en) |
| GB (1) | GB265612A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3032722A (en) * | 1957-12-05 | 1962-05-01 | Fielden Electronics Ltd | Transistor oscillators and capacity sensitive circuits comprising such oscillators |
-
1927
- 1927-01-25 US US163360A patent/US1863798A/en not_active Expired - Lifetime
- 1927-02-05 GB GB3312/27A patent/GB265612A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US1863798A (en) | 1932-06-21 |
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