This study integrates a MOS varactor into one of feedback capacitors in the half circuit of a balanced Colpitts VCO. This leads to significant increase of the negative resistance of the balanced Colpitts VCO, thereby ensuring stable start-up of oscillation even at the sub-1-V supply voltage and causing further signal swing in the tank.

It is shown experimentally that a relatively low longitudinal magnetic field applied causes a noticeable change in the velocity of autosoliton travel in InSb samples and a visible redistribution of these autosolitons in the electric field. As a result, the current oscillation frequency and amplitude in the external circuit of the sample either increase or decrease depending on the direction of ...

Fluctuation-induced switching of driven bistable systems, far from equilibrium, has been the focus of theoretical analysis and analog circuit computations. A parametrically driven electron in a Penning trap is shown to be a nearly ideal experimental realization. Noise applied to this dynamic double well system produces random switching between two steady-state oscillations which differ in the o...

This paper presents the overview of studies on the abnormal oscillations which have been occurred in the power transmission systems in Japan. It also focuses on the recent studies of the dynamics of the subharmonic oscillation of order 113 in a nonlinear three-phase circuit which is the fundamental model of the series-compensated transmission line.

Because the traditional BP neural network slow convergence speed, easily falling in local minimum and the learning process will appear oscillation phenomena. This paper introduces a tolerance analog circuit hard fault and soft fault diagnosis method based on adaptive learning rate and the additional momentum algorithm BP neural network. Firstly, tolerance analog circuit is simulated by OrCAD / ...

A first-order delayed chaotic model with n-double scroll attractors is investigated. The associated piecewise-linear activation function requires only a few operational amplifiers, which can easily be realized by an electronic circuit. The typical waveforms and phase portraits are plotted to illustrate n-double scroll chaotic oscillations. Keywords—delay; chaotic attractor; n-double scroll; cir...

We study a new version of Chua’s circuit where the linear elements are replaced by a delay line. We show that this circuit is a model of an interesting class of musical instruments, namely, those, like the clarinet, consisting of a massless reed coupled to a passive linear system. The properties and behaviors of this circuit are studied with or without a filter in the feedback loop. In particul...

As a wide bandgap power electronics device, the SiC MOSFET has lot of advantages over traditional Si IGBT. Replacing IGBT with in existing converter is an effective means to improve performance and promote upgrading converter. Generally, order make full use its MOSFET, circuit cannot be simply replaced by but main driver need redesigned because oscillation problem cross-talk caused parasitic pa...

We present a model of the single-ganglion oscillator of the leech swim central pattern generator (CPG). The model is based on the known neuronal architecture of this circuit. Free parameters in the model were "tted to produce membrane potential oscillations matching those seen during swimming. However, the oscillations produced are not robust to small ($5%) changes in the parameters. We propose...