GB474522A - Improvements in or relating to thermionic valve oscillation generators - Google Patents
Improvements in or relating to thermionic valve oscillation generatorsInfo
- Publication number
- GB474522A GB474522A GB16772/37A GB1677237A GB474522A GB 474522 A GB474522 A GB 474522A GB 16772/37 A GB16772/37 A GB 16772/37A GB 1677237 A GB1677237 A GB 1677237A GB 474522 A GB474522 A GB 474522A
- Authority
- GB
- United Kingdom
- Prior art keywords
- temperature
- circuit
- valve
- impedance
- anode
- 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
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L1/00—Stabilisation of generator output against variations of physical values, e.g. power supply
- H03L1/02—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only
Landscapes
- Thermistors And Varistors (AREA)
- Resistance Heating (AREA)
Abstract
474,522. Valve generating circuits. SIEMENS & HALSKE AKT.-GES. June 16, 1937, No. 16772. Convention date, June 16, 1936. [Class 40 (v)] The frequency of a valve oscillator is rendered independent of temperature changes by means of a temperature-dependent impedance in the valve anode circuit which reflects a variable capacity effect into the circuit of the grid or grids and so balances variations caused by changes in the temperature of the reactance elements of the oscillatory circuit. The anode impedance may be a resistance with a negative temperaturecoefficient such as uranium dioxide, copper oxide, carbon, or dilute acids, or with a positive temperature - coefficient such as an ironhydrogen resistance. The temperature-impedance characteristic may be regulatable, e.g. by using a combination of several impedances with different characteristics and tapping variable portions of them into circuit. The Figure shows a suitable circuit employing a two-grid valve 1 with coupled tuned circuits 6, 7 and 8, 9 associated with its outer and inner grids 4, 3 and with its anode 2 connected to a load 12 through the temperature-dependent impedances 14, 15. Regulation is effected by adjusting the impedance 15.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE474522X | 1936-06-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB474522A true GB474522A (en) | 1937-11-02 |
Family
ID=6541734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB16772/37A Expired GB474522A (en) | 1936-06-16 | 1937-06-16 | Improvements in or relating to thermionic valve oscillation generators |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB474522A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2806200A (en) * | 1952-12-17 | 1957-09-10 | Bell Telephone Labor Inc | Ambient temperature compensation of thermistors |
-
1937
- 1937-06-16 GB GB16772/37A patent/GB474522A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2806200A (en) * | 1952-12-17 | 1957-09-10 | Bell Telephone Labor Inc | Ambient temperature compensation of thermistors |
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