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Analysis Of The White Emitter-Follower Amplifier, William Parker Finch

Masters Theses

The analysis of the White emitter-follower, indicated that this circuit exhibits definite advantages over the the conventional emitter-follower in four areas: gain, input impedance, output impedance, and amplification of bipolar pulses. The feedback in the White emitter-follower accounts for he advantages.

A major disadvantage of the emitter-follower is the variation in beta, for large collector current swings, which results in unequal amplification of bipolar pulses. It has been shown that the White emitter-follower does not exhibit this non-linear beta characteristic due to the compensation of the feedback loop. A decrease in beta in the White emitter-follower will result in an …

Cophasal Excitation Of Circular Antenna Arrays, Chang-Keng Kuo

Masters Theses

[From the Introduction]

An antenna array consists of a set of individual radiating elements, each having a current of some amplitude and phase. If the each of the phases is chosen so that there is some direction in space for which the fields from the individual radiators add in phase, the array is said to be cophased, and the excitation is said to be cophasal. This thesis is concerned with some of the characteristics of cophased circular antenna arrays.

By far the most common antenna array is the linear array, in which the elements are equally spaced along …

Mutual Coupling Between Loudspeakers, Robert Edward Bodenheimer

Masters Theses

Introduction: A complete system for reproduction of sound in the home consists of a chain whose first link is formed by a turntable pick-up and whose final link is made up of one or more loudspeakers. The loudspeaker is considered among the weaker links of this chain. In fact, the quality of sound from a reproducing system can be entirely dependent upon the performance of its loudspeaker system.

Only in the last few years have separate speakers been employed to reproduce a part of the frequency spectrum. In present day sound systems two or more identical speakers are often installed …

The Design And Analysis Of A Vacuum Tube D. C. Voltage Regulator Having Specified Characteristics, Charles Lamar Brantley

Masters Theses

Introduction: Advancing technology in the fields of Radar and Computers has placed increased emphasis on the performance of d. c. voltage regulators in the past few years, and there certainly is no reason to believe that this trend will subside in the future.

Vacuum tubes have been used for many years as a means of regulating output voltages of d. c. power supplies. The consequent development of a "cookbook" technique of design for such circuitry has led to many misconceptions and misunderstandings as to the characteristics available from the vacuum tube regulator and the methods of obtaining these characteristics. In …

Electrical Analogue Computer For The Heat Pump, James Edward Goff

Masters Theses

(Taken from the Summary)

Because of the complex behavior of a cylindrical heat source-sink under intermittent operating conditions, analysis by analytical means is very difficult. Therefore an electrical analogy computer consisting of a distributed resistance capacitance model was designed and built. It was shown analytically that the behavior of this computer model was the same as that of the heat system. That the model was a true analogy is verified by the fact that data obtained from this model could be used to check certain heat flow problems previously solved by analytical means. Data were obtained for a …

The Design And Application Of An Electronic Phase Angle Meter, Will Otis Leffell

Masters Theses

Introduction [Abbreviated]:

The purpose of this paper is to consider some problems that are involved in the design and application of an electronic phase angle meter. A phase angle meter is a device that has long been used in power work. However, the meters used take considerable energy from the circuits, and will not respond to very rapid changes in the phase angle. Most of these meters work on the principle of the Tuma phase meter, and commonly indicate the angle between a current and a voltage. In power work, while the energy consumption is not so important, a meter …

Short-Circuit Study Of The Norris-Wheeler Transmission Line, H. H. Gnuse Jr.

Masters Theses

The short-circuit study of the Norris-Wheeler transmission line as presented in this thesis was conducted on the basis of several simplifying assumptions which do not appreciably affect the accuracy of the work. These assumptions, which greatly facilitate a mathematical solution and, in fact, make a mathematical solution possible from a practical standpoint, are those which are normally employed when use is made of a direct-current calculating board. Most of these assumptions, as can be noticed from the following tabulation, tend to increase the calculated short-circuit currents over their actual value, thus keeping the results on the safe side as far …

A Theoretical Discussion Of The Variation In Temperature Of A Gas Flame That Occurs When The Proportion Of Air Supplied, And The Temperature Of This Air, Varies, C. L. Henderson

Masters Theses

No abstract provided.