GB403070A - Improvements in stabilising the frequency of a valve generator - Google Patents
Improvements in stabilising the frequency of a valve generatorInfo
- Publication number
- GB403070A GB403070A GB10434/32A GB1043432A GB403070A GB 403070 A GB403070 A GB 403070A GB 10434/32 A GB10434/32 A GB 10434/32A GB 1043432 A GB1043432 A GB 1043432A GB 403070 A GB403070 A GB 403070A
- Authority
- GB
- United Kingdom
- Prior art keywords
- branch
- fundamental
- inductance
- harmonics
- capacitative
- 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
- 230000003019 stabilising effect Effects 0.000 title 1
- 230000001939 inductive effect Effects 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
- H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
- H03B5/10—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being vacuum tube
Landscapes
- Supply And Distribution Of Alternating Current (AREA)
- Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
403,070. Valve circuits. MOULLIN, E. B., 189, Morrell Avenue, Oxford. April 12, 1932, No. 10434. [Classes 40 (iii) and 40 (v).] Relates to a tuning-circuit for use in a dynatron or other valve oscillator, in which, in order to prevent the frequency from being affected by the curvature of the valve characteristic, acceptor circuits LC2, LC3 .... are tuned to the harmonics, and an inductance L in branch a forms, with the capacity C1 together with the capacities in the acceptor circuits, a rejector circuit tuned to the fundamental ; and consists in equalizing the power factors of the inductive and capacitative branches of the total circuit at the fundamental frequency by addition of a resistance P. In order that the fundamental resonance may occur when P<2>LK=1, where K=C1+C2+C3 .... , the power factor of the inductance branch a must be equal to that of the remaining branches, which are capacitative at the fundamental frequency ; and to this end a resistance P equal to 0.868 R is added as shown, where R is the resistance in each inductance coil. The values of C1, C2, C3 ... are determined by the frequencies of the fundamental and harmonics with which they are associated, and C1=K- 2.3077 ; but as an approximation the inductances belonging to the high harmonics may be reduced to permit of the use of larger condensers. The inductance in branch LC2 may be shunted by a small condenser to make that branch capacitative to the fourth and higher harmonics.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB10434/32A GB403070A (en) | 1932-04-12 | 1932-04-12 | Improvements in stabilising the frequency of a valve generator |
US692067A US2005236A (en) | 1932-04-12 | 1933-10-04 | Stabilizing the frequency of a valve generator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB10434/32A GB403070A (en) | 1932-04-12 | 1932-04-12 | Improvements in stabilising the frequency of a valve generator |
Publications (1)
Publication Number | Publication Date |
---|---|
GB403070A true GB403070A (en) | 1933-12-12 |
Family
ID=9967766
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB10434/32A Expired GB403070A (en) | 1932-04-12 | 1932-04-12 | Improvements in stabilising the frequency of a valve generator |
Country Status (2)
Country | Link |
---|---|
US (1) | US2005236A (en) |
GB (1) | GB403070A (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3098231A (en) * | 1960-07-18 | 1963-07-16 | Mosley Electronics Inc | Multiple frequency antenna system |
GB2330259B (en) * | 1997-10-09 | 2002-08-14 | Eev Ltd | Oscillator arrangements |
US8505990B2 (en) * | 2007-12-21 | 2013-08-13 | Sabic Innovative Plastics Ip B.V. | Corner energy absorber and bumper system |
-
1932
- 1932-04-12 GB GB10434/32A patent/GB403070A/en not_active Expired
-
1933
- 1933-10-04 US US692067A patent/US2005236A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US2005236A (en) | 1935-06-18 |
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