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The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
provided by the
Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
Search results
Showing 1 to 10 of 37 (0.039 seconds)| 1 |
Chopper stabilization of a direct amplifierHaville, George Douglas, 1926- January 1958 (has links)
No description available.
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An investigation of n magnetically-coupled vacuum tube circuitsPhillips, Charles Lamar 08 1900 (has links)
No description available.
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A screen-grid coupled direct-current amplifierJones, William Benjamin 08 1900 (has links)
No description available.
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A study of vacuum tubes as low-powered amplifiers, designed for high efficiencyGraves, Varney A. 08 1900 (has links)
No description available.
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The development and construction of a vacuum-tube voltmeter of high accuracyHonnell, Martial Alfred 05 1900 (has links)
No description available.
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Synchronization of oscillators by interrupted wave trainsFraser, Donald Woodrow 08 1900 (has links)
No description available.
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High frequency performance of parallel-T networksPowell, Donald Spencer 08 1900 (has links)
No description available.
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The transductor amplifier its manner of action and comments on its use for automatic regulation.Krabbe, Ulrik. Ytterberg, Arle. January 1900 (has links)
Thesis--Danmarks Tekniske Højskole. / Without thesis statement. Summary in Danish. Bibliography: p. 166-167.
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The transductor amplifier its manner of action and comments on its use for automatic regulation.Krabbe, Ulrik. Ytterberg, Arle. January 1900 (has links)
Thesis--Danmarks Tekniske Højskole. / Without thesis statement. Summary in Danish. Bibliography: p. 166-167.
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A hybrid-coupled tunnel-diode amplifierHolland, John Henry January 1962 (has links)
The analysis and design of a hybrid-coupled tunnel-diode amplifier is described, considering both the hybrid junction and the tunnel-diode circuitry.
The fundamental theory of the tunnel diode is reviewed. The hybrid junction is in the form of a strip-line directional coupler which makes use of the inherent contra-directional coupling between two adjacent transmission lines. A complete analysis of the frequency dependence of the response of such a coupler is given. The amplifier is realized using the coupler and a pair of matched diodes terminating mutually isolated ports. To optimize the performance of this type of amplifier the design of the coupler is integrated with the design of the diode circuit. In doing so, account is taken of the frequency dependence of the hybrid junction, an aspect of the problem which has not been treated in the literature.
As an example, an amplifier covering the VHF television channels is designed, and experimental results of a working model for a 50-ohm system are presented. The amplifier uses the periodicity of the directional coupler to provide two pass bands spanning Channels 2 to 6 (54 to 88 Mc) and Channels 7 to 12 (174 to 216 Mc), respectively. The two GE lN2939A tunnel diodes used for the amplifier provide a gain of 7.8 db ± 0.3 db for the lower band and 8.9 db ± 0.45 db for the upper band. The maximum input VSWR for the lower and upper bands are less than 2.3 and 3.2, respectively.
The theoretical noise figure for a bias current of 0.7 ma is 3.79 db.
It is found that the experimental results are in general agreement with the theory. Suggestions for improvement are given in cases where discrepancies do occur. / Applied Science, Faculty of / Electrical and Computer Engineering, Department of / Graduate
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