Topic
Relaxation oscillator
About: Relaxation oscillator is a research topic. Over the lifetime, 1952 publications have been published within this topic receiving 22326 citations.
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01 Aug 1949
TL;DR: In this paper, the design of a nongaseous miniature trigger tube is described, where a triode input section produces a primary electron beam which impinges on a dynode to produce secondary electrons.
Abstract: Aspects of the design of a nongaseous miniature trigger tube are given. A triode input section produces a primary electron beam which impinges on a dynode to produce secondary electrons. These are collected by two different output elements which may be used separately or as a unit. A surface having long life and stability is described. Suggested applications include its use as a relaxation oscillator, multivibrator, pulse inverter, triangular-wave generator, and dynatron.
1 citations
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TL;DR: In this article, the authors studied the effect of additive noise on the period and amplitude of the relaxation oscillator of the PRM operator region of λ phage and found that the additive noise cannot change the amplitude and period of relaxation oscillators, but in the multiplicative case, the period increases to a constant value with the increase of the strength of noise.
Abstract: Based on the model describing the regulation of the PRM operator region of λ phage proposed by Jeff Hasty et al., we study the noise effects on the oscillator network. We find that the additive noise cannot change the period and the amplitude of the relaxation oscillator, but in the multiplicative case, the period of the relaxation oscillator increases to a constant value with the increase of the strength of noise, and the amplitude of the relaxation oscillator also shows increases with the increase of the strength of noise. This novel results suggest that an external multiplicative noise source could be used to control gene expression.
1 citations
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15 Aug 1962
TL;DR: In this article, the saturation of a shell-type ferrite core was varied by a rotatable permanent magnet M located in a U-shaped magnetic path P1, P2 straddling the core.
Abstract: 903,652 Inductances MULLARD Ltd Feb 27, 1961, No 7096/61 Class 38 (2) [Also in Groups XXXIX and XL (c)] The coil L1 of a tuned circuit in an oscillator (see Group XL (c)) is wound on the outer limbs of a shell-type ferrite core so as not to produce any coupling with a coil L2 passing a control current to variably saturate the core and shortcircuited turn L3 for smoothing the control current The saturation of the core may also be varied by a rotatable permanent magnet M located in a U-shaped magnetic path P1, P2 straddling the core
1 citations
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27 May 2005TL;DR: In this article, a Wien-bridge-based circuit for chaotic oscillations was designed and investigated both numerically and experimentally, and the oscillator is extremely simple, it contains only a modified Wienbridge oscillator and an additional hysteresis comparator.
Abstract: In this paper, a Wien-bridge based circuit generating chaotic oscillations is designed and investigated both numerically and experimentally. The oscillator is extremely simple. It contains only a modified Wien-bridge oscillator and an additional hysteresis comparator. The typical waveforms and the phase portrait of the attractor are presented to illustrate the single scroll in a quasi-two-dimensional oscillator. This work should be a good supplement to the hysteresis chaos generating method. (ICCCAS'05).
1 citations
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28 Jul 2004
TL;DR: In this article, a low cost integrated circuit oscillator with improved frequency stability over a range of selected frequencies by reducing the impact of process and temperature variations on a base current of bipolar transistors of the IC oscillator is presented.
Abstract: A method and apparatus providing a simple low cost integrated circuit
oscillator with improved frequency stability over a range of selected frequencies by
reducing the impact of process and temperature variations on a base current of bipolar
transistor of the integrated circuit oscillator. A voltage follower circuit (105) included
in an integrated circuit oscillator is injected with a base current provided by a current
mirror (303) instead of a capacitor such that variations in the base current of the
bipolar transistor over the range of operating temperature do not substantially alter the
charge in the capacitor to change the frequency of the oscillator.
1 citations