Ever increasing circuit density, operating speed, faster on-chip rise times, use of low resistance Copper (Cu) interconnects, and longer wire lengths due to high level of integration in VLSI chip designs, have necessitated the need for modeling of wire inductive (L) effects which were ignored in the past. In this paper we will review different approaches of modeling the on-chip wire inductance,...

We model s-wave and d-wave disordered granular superconductors with a three-dimensional lattice of randomly distributed Josephson junctions. The nonlinear ac resistivity rho(2) of these systems was calculated using Langevin dynamical equations. The current amplitude dependence of rho(2) at the peak position is found to be a power law characterized by exponent alpha, which is not universal but d...

A new one-dimensional (1-D) defected ground unit lattice is proposed in order to improve the effective inductance. Increasing the effective inductance makes it easy to control the cutoff frequency characteristics. The proposed periodic defected ground structure (DGS) provides the excellent cutoff and stopband characteristics. In order to show the improved the effective inductance, three DGS cir...

The Low Current Pulser generates up to a 30 kV potential difference between the wire holder’s anode and cathode. This voltage drops across the specimen and is supported by a combination of the wire’s resistance and the holder’s inductance. A typical load may have 2Ω resistance and 50 nH inductance. Voltage and current are measured with each shot. Current is recorded using a rogowski coil and vo...

We consider the inductance coefficient for a thin toroidal inductor whose thickness depends on a small parameter ε > 0. An explicit form of the singular part of the corresponding potential u is given. This allows to construct the limit potential u (as ε → 0) and an approximation of the inductance coefficient L. We establish some estimates of the deviation u − u and of the error of approximation...

In this work, a measurement error analysis for a position estimator for self-sensing magnetic levitation systems is shown. The analysis is based on the position estimation algorithm proposed in [3, 4], which is set up by a least squares identification of the inductance and a suitable averaging. By means of a mathematical model the main idea of the estimation strategy is shortly outlined and it ...

This paper cover the analysis and construction of current to voltage transducer based on Rogowski coil which satisfy the requirements of high-accuracy measurement of AC current (up to 20 A at power supply frequency, with the aiming uncertainty of 100 parts per million). Primary source of ac current uncertainty measured by this type of transducer is nonuniform density of turns which, in case of ...

Using a thermal sample of laser-cooled rubidium atoms, we have constructed a neutral-atom circuit analogous to an electronic capacitor discharged through a resistor. The atoms are confined using what we call a free-space atom chip, an optical dipole trap created using a generalized phase-contrast imaging technique. We have also calculated theoretical values for the capacitance and resistance, w...

We characterize inductors fabricated from ultra-thin, approximately 100 nm wide strips of niobium (Nb) and niobium nitride (NbN). These nanowires have a large kinetic inductance in the superconducting state. The kinetic inductance scales linearly with the nanowire length, with a typical value of 1 nH µm(-1) for NbN and 44 pH µm(-1) for Nb at a temperature of 2.5 K. We measure the temperature an...

Effects of magnetic saturation on various equivalent circuit models of an induction motor are studied. The parameters of 2.2-kW and 37-kW motors with closed rotor slots are analyzed using finite element computations. Both skewed and unskewed rotor slots are studied. The magnetizing inductance not only depends on the main flux, but is also dependent on the rotor current, especially if the rotor ...