GB505124A - Improvements in variable thermionic impedance networks - Google Patents
Improvements in variable thermionic impedance networksInfo
- Publication number
- GB505124A GB505124A GB3070037A GB3070037A GB505124A GB 505124 A GB505124 A GB 505124A GB 3070037 A GB3070037 A GB 3070037A GB 3070037 A GB3070037 A GB 3070037A GB 505124 A GB505124 A GB 505124A
- Authority
- GB
- United Kingdom
- Prior art keywords
- grid
- circuit
- anode
- cathode
- variable
- 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
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
- H03J7/02—Automatic frequency control
- H03J7/04—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant
- H03J7/042—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant with reactance tube
Landscapes
- Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
Abstract
505,124. Automatic tuning correction. COLE, Ltd., E. K., and BRADFIELD, G. Nov. 9, 1937, No. 30700. [Class 40 (v)] In an A.F.C. system employing a thermionic reactance control valve V2 having a potentiometer 6, 7, 8, 9 connected between anode and cathode, a point on which is connected to the control grid in known manner, the terminals of the reactance connected to the controlled circuit 2 are constituted by the cathode and a positively biassed electrode 4 other than the anode, whereby the damping effect of the potentiometer on the circuit 2 is reduced. V2 may be a standard hexode, A.F.C. potential being applied to the third grid from the cathode ; a further positively biassed grid may be located between grid 4 and the anode, further to reduce the damping. Circuit 2 is the frequency determining circuit of the triode oscillator portion of the triode-hexode mixer V1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3070037A GB505124A (en) | 1937-11-09 | 1937-11-09 | Improvements in variable thermionic impedance networks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3070037A GB505124A (en) | 1937-11-09 | 1937-11-09 | Improvements in variable thermionic impedance networks |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB505124A true GB505124A (en) | 1939-05-05 |
Family
ID=10311752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3070037A Expired GB505124A (en) | 1937-11-09 | 1937-11-09 | Improvements in variable thermionic impedance networks |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB505124A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2713634A (en) * | 1952-04-10 | 1955-07-19 | Rca Corp | Mixer circuit |
-
1937
- 1937-11-09 GB GB3070037A patent/GB505124A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2713634A (en) * | 1952-04-10 | 1955-07-19 | Rca Corp | Mixer circuit |
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