The purpose of this paper is to evaluate the characteristics corrosion protection stainless steel substrates coated with silica by electrophoresis pulsed direct current (PDC) and constant (CDC) anodization. Electrophoresis was carried out using sol from sodium silicate solution as an electrolyte solution. Stainless functioned anode carbon a cathode electrode distance 2 cm. amplitude, duty cycle...

Weak grids are gaining considerable attention since power generation resources remote from constant loads (CPLs), which results in low-frequency/harmonic oscillation. Meanwhile, due to the play, and plug demand of modern system, line inductance weak often changes, is also regarded as variation regarding short circuit ratio (SCR). Based on this, conventional impedance-based stability operation p...

A generic lumped-element circuit of dual-band bandstop filter (DBBSF) is proposed based on novel composite shunt resonators, and its design method is developed with closed-form formulas. As an example, a DBBSF with center frequencies of 1.7 and 2.3GHz is designed and fabricated using microstrip lines. The measured frequency response agrees excellently with the theoretical predictions, validatin...

In this paper, a new trans-admittance-mode biquad filter configuration based on two multi output voltage differencing transconductance amplifiers (MO-VDTAs) as newly active elements is proposed which also consists of two grounded MOS resistors and two capacitors with one of the capacitor is being permanently grounded. The proposed configuration is competent of realizing trans-admittance-mode lo...

Timeand frequency-domain theory of multiwire magnetic transmission lines is presented for the first time. The familiar theory of electric multiconductor transmission lines (MTL) is based on the manipulation of two matrices, the longitudinal impedance and the transverse admittance. However, for magnetic MTLs, the key matrices are the transverse impedance and the longitudinal admittance. It is sh...

Dielectrics and dielectric properties are defined generally and dielectric measurement methods and equipment are described for various frequency ranges from audio frequencies through microwave frequencies. These include impedance and admittance bridges, resonant frequency, transmission-line, and free-space methods in the frequency domain and time-domain and broadband techniques. Many references...

Frequency-domain modeling is an effective technique in the dynamic analysis of power electronic converters-based systems. In this paper, a unified single-input single-output (SISO) loop gain for three-phase grid-tied voltage source converters (VSCs) under both symmetric and asymmetric AC grids presented, which facilitates physical measurement stability analysis. Based on linear-time-periodic (L...

With the aim of improving stability renewable energy system with high permeability in weak grid, a modified passivity-based control based on interconnection and damping assignment (IDA) is presented for LCL-filtered grid-connected inverters to eliminate interactive resonances. The object modeled form port-controller Hamiltonian, including partial differential stored function. On premise ensurin...

The analysis and optimization of the npvnp avalanche diode have been realized on basis of the nonlinear model and special optimization procedure. This type of the diode that was named as Double Avalanche Region (DAR) IMPATT diode includes two avalanche regions inside the diode. The phase delay which was produced by means of the two avalanche regions and the drift region v is sufficient to obtai...

Abstract We derive general analytical expressions for matching the complex impedance of feeding radio frequency (RF) circuit to a twin junction device in Superconductor-Insulator-Superconductor (SIS) mixers. A unique feature our analysis is that it allows junctions different admittance and an RF with admittance. This provides important design flexibility accommodates fabrication tolerances. the...