Results 271 to 280 of about 6,175 (306)

Influence of operating conditions on hydrounit power oscillations

Eurocon 2013, 2013
Because of many different instability reasons, power unit stability problems should be analyzed in details for each specific case. This paper describes a specific case of power oscillations problem of hydroelectric power unit with double regulated bulb turbine.
Miljenko Brezovec, Blazenka Brkljac, Igor Kuzle   +2 more
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Start-oscillation conditions of tapered backward-wave oscillators

IEEE Transactions on Electron Devices, 1963
Coupled-mode theory is employed to describe the interaction between nonuniform electron beams and circuits. It is then applied to determine the start-oscillation conditions of a tapered backward-wave oscillator. It is shown that under high space-charge operating conditions where the coupling to the fast space-charge wave is negligible and for weak ...
G.I. Haddad, R.M. Bevensee
openaire   +1 more source

Analysis of oscillator synchronization conditions

Russian Microelectronics, 2011
The problem of determining the synchronization conditions of an arbitrary oscillator by a small periodic arbitrary waveform signal is considered. It is shown that the problem solution can be found from the existence conditions of small-signal linear system solution.
M. M. Gourary, S. L. Ulyanov
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Oscillation Condition and the Uncertainty Principle

2007 IEEE/MTT-S International Microwave Symposium, 2007
A new steady state oscillation condition is proposed in this paper. By applying the uncertainty principle to the process of Kurokawa's derivation, the new oscillation condition is derived for three different cases of real and imaginary parts of resonant load, which is a block of two main circuit blocks, consisting of oscillator.
Johann Kwon, Ihn S. Kim
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Conditions for mechanical Bloch oscillations

physica status solidi (c), 2005
Using the theory for surface waves, the propagation of a disturbance in elastic media is studied. An important and sufficient condition for achieving Bloch oscillations is the variation of the depth of the fluid. This variation produces changes in the refraction index and in the wave number of the disturbance in such a way that those changes exhibit ...
H. Ramirez, A. Camacho
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Starting oscillation conditions for gyrotron backward wave oscillators

Physics of Plasmas, 1994
A generalized linear theory that allows for mismatched boundary conditions was used in determining the starting oscillation conditions for gyrotron backward wave oscillators (gyro-BWO). The results reveal that the gyro-BWO interaction is normally caused by the interference between a constant-amplitude backward wave and a decaying backward wave.
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Oscillation Conditions for a Third-Order Linear Equation

Differential Equations, 2001
This paper concerns the third-order linear differential equation \[ u'''+ p(t)u= 0, \] where \(p: [0,+\infty)\to \mathbb{R}\) is a locally integrable function. The main goal of this paper is to prove some integral oscillation criteria for the above-mentioned equation.
Adamec, L., Lomtatidze, A.
openaire   +2 more sources

Homogenization of Stokes with Neumann condition on oscillating boundary

Asymptotic Analysis, 2019
The stationary Stokes problem in a n-dimensional domain with a rapidly oscillating [Formula: see text] dimensional boundary prescribed with Neumann boundary condition and periodicity along the lateral sides is considered. We identify the limit equation in a fixed domain with a one dimensional Laplacian-type problem, satisfied on the region covered by ...
Thirumalai Nambi Muthukumar, Bidhan Chandra Sardar   +1 more
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Sufficient oscillation conditions for the Sturm–Liouville equation

Differential Equations, 2017
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Bilal, Sh., Dzhenaliev, M. T.
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Verifying start-up conditions for a ring oscillator

Proceedings of the 18th ACM Great Lakes symposium on VLSI, 2008
Recently, researchers at Rambus proposed a ring-oscillator example as a challenge problem for analog verification: they asked researchers to identify conditions that will ensure that the oscillator is free from lock-up. We present a solution to this challenge problem. Our approach is primarily pencil-and-paper analysis.
Mark R. Greenstreet, Suwen Yang
openaire   +1 more source