This paper presents the electrothermal simulation of integrated thin film resistors. Both the thermal and electrical problem is tackled by a semi-analytical method, without the need of generating an equivalent distributed network. As the electrical conductivity is temperature dependent, self-heating of the resistor will alterate the current distribution, leading to a non-uniform power dissipati...

Photovoltaic power supplied to the utility grid is gaining more and more visibility while the world’s powers demand is increases. Growing demand, advancements in semiconductor technology and magnetic materials such as high frequency inductor cores, has a significant impact on PV inverter topologies and their efficiencies, on the improvement of the control circuits on the potential of costs redu...

Dynamically switched resistor banks connected to the generator transformer bus are known to improve transient stability of the power system. In this article, a braking resistor control strategy designed through fuzzy logic control theory has been proposed to damp the slowly growing subsynchronous resonant (SSR) frequency oscillations of a power system. The proposed control has been tested on th...

Attempts up to now to develop an analog realization of a fractional order control (FOC) element have focused on constructing an approximation of the FOC using ideal resistor/capacitor networks.[1] In fact, an ideal capacitor cannot exist. An ideal dielectric in a capacitor having an impedance of the form 1/(jωC) would violate causality. It seems sensible to look for dielectric materials exhibit...

MEMS-based oscillators offer a silicon-based alternative to quartz-based frequency references. Here, a MEMS-based programmable oscillator is presented which achieves better than 0.5-ppm frequency stability from 40 C to 85 C and less than 1-ps (rms) integrated phase noise (12 kHz to 20 MHz). A key component of this system is a thermistor-based temperature-to-digital converter (TDC) which enables...

CTS began manufacturing pointing devices in 1994 for use as cursor controls, mounted in the keyboards of notebook computers. While completed keyboards were robust against ESD, many precautions were required during manufacture and assembly to protect against the effects of ESD. While these ESD “protective” controls were effective in controlling ESD, they did not eliminate the ESD susceptibility ...

There is a renewed surge in percolation-induced transport properties of diverse nanoparticle composites (cf. RSC Nanoscience & Nanotechnology Series, Paul O’Brien Editor-inChief). We note in particular a broad interest in nanocomposites exhibiting sharp electrical property gains at and above percolation threshold, which motivated us to revisit the classical setting of percolation in random resi...

A phenomenological model is developed for systematic study of the universal features in metal-insulator transition and magnetoresistivity of mixed-phase manganites. The approach is based on utilization of some hypothesis appropriate to the Preisach picture of the magnetization process for half-metallic ferromagnets and an assumption that in doped manganites a Griffiths-type phase exists just ab...

We demonstrate control of the thermal hysteresis in superconducting constrictions by adding a resistive shunt. In order to prevent thermal relaxation oscillations, the shunt resistor is placed in close vicinity of the constriction, making the inductive current-switching time smaller than the thermal equilibration time. We investigate the current-voltage characteristics of the same constriction ...

Radial Basis Function (RBF) networks provide a powerful learning architecture for neural networks [6]. We have implemented a RBF network in analog VLSI using the concept of bump-resistors. A bump-resistor is a nonlinear resistor whose conductance is a Gaussian-like function of the difference of two other voltages. The width of the Gaussian basis functions may be continuously varied so that the ...