Self-oscillation is observed in a transmission line with a tunnel diode on one end. The voltage waveform across and the current waveform through the tunnel diode are, in general, pulse form or stair-case form. This pa...
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Self-oscillation is observed in a transmission line with a tunnel diode on one end. The voltage waveform across and the current waveform through the tunnel diode are, in general, pulse form or stair-case form. This paper discusses the theoretical analysis of the circuit, and also presents the experimental results, which are in good agreement with the analysis. This circuit can be used as a pulse or staircase wave generator, pulse-frequency modulator with discontinuous levels, analog-digital converter, etc. It is simple in construction, requires little source power, and has a wide frequency range (e.g., μsec~mμsec).
Traveling waves must be considered whenever the time for a disturbance to propagate from one place to another is important. A course with this as its theme has been developed to replace the usual course in transmissio...
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Traveling waves must be considered whenever the time for a disturbance to propagate from one place to another is important. A course with this as its theme has been developed to replace the usual course in transmission lines or distributed constant circuits. Emphasis is placed on the transmission line as a teaching vehicle, but plane waves in space; vibrating strings and membranes; acoustic waves in gases, liquids and solids; heat conduction; and chemical diffusion are also treated. The analogies between the "telegraphers' equations" and comparable equations describing nonelectrical phenomena are stressed. Transients are treated for two special cases: 1) lossless lines and acoustics, and 2) diffusion and heat transfer. Steady state analysis using phasors and the Smith Chart is applied to plane electromagnetic and acoustic waves at all angles of incidence, as well as to the transmission line. Spherical acoustic waves are treated briefly.
During the investigation of a cryogenic pulse-storage device containing a tunnel diode coupled to an open-circuited delayline, oscillations were observed which abruptly changed frequency with variations of bias. This ...
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During the investigation of a cryogenic pulse-storage device containing a tunnel diode coupled to an open-circuited delayline, oscillations were observed which abruptly changed frequency with variations of bias. This paper is an inquiry into the causes and nature of these oscillations. The investigation is resolved into two interdependent sections. Section I presents the construction of a model that contains the significant features of the oscillator and its analysis. Section II consists of an experimental determination of the variation of oscillation frequency with bias. The frequency of oscillation is found to exhibit sharp steps as bias varies, hence, the term "discrete frequency oscillator."
The principle upon which the operation of direct-reading wattmeters is based has been known for many years. The contribution of this paper lies in the application of this principle to a practical operating instrument ...
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