self-excited oscillator - ορισμός. Τι είναι το self-excited oscillator
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Τι (ποιος) είναι self-excited oscillator - ορισμός

Self oscillation; Self-exciting oscillation; Self‑oscillation; Self-oscillator
  • Schematic representation of a self-oscillation as a positive feedback loop.  The oscillator ''V'' produces a feedback signal ''B''.  The controller at ''R'' uses this signal to modulate the external power ''S'' that acts on the oscillator.  If the power is modulated in phase with the oscillator's velocity, a negative damping is established and the oscillation grows until limited by nonlinearities.

Self-oscillation         
Self-oscillation is the generation and maintenance of a periodic motion by a source of power that lacks any corresponding periodicity. The oscillator itself controls the phase with which the external power acts on it.
Clapp oscillator         
ELECTRONIC OSCILLATOR
Gouriet oscillator
The Clapp oscillator or Gouriet oscillator is an LC electronic oscillator that uses a particular combination of an inductor and three capacitors to set the oscillator's frequency. LC oscillators use a transistor (or vacuum tube or other gain element) and a positive feedback network.
Excited delirium         
DISPUTED MEDICAL CONDITION ACCOMPANIED BY EXTREME AGITATION AND DELIRIUM
Excited delerium; Excited Syndrome; Agitated delirium; Excited delirium syndrome; Bells' mania; Severe agitation; Excited dilirium
Excited delirium (ExDS), also known as agitated delirium (AgDS), is a controversial diagnosis sometimes characterized as a potentially fatal state of extreme agitation and delirium. It is typically diagnosed postmortem in young adult males, disproportionally black men, who were physically restrained at the time of death, most often by law enforcement personnel.

Βικιπαίδεια

Self-oscillation

Self-oscillation is the generation and maintenance of a periodic motion by a source of power that lacks any corresponding periodicity. The oscillator itself controls the phase with which the external power acts on it. Self-oscillators are therefore distinct from forced and parametric resonators, in which the power that sustains the motion must be modulated externally.

In linear systems, self-oscillation appears as an instability associated with a negative damping term, which causes small perturbations to grow exponentially in amplitude. This negative damping is due to a positive feedback between the oscillation and the modulation of the external source of power. The amplitude and waveform of steady self-oscillations are determined by the nonlinear characteristics of the system.

Self-oscillations are important in physics, engineering, biology, and economics.