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In order to have a power supply with high voltage conversion ratio for low voltage and high current digital ICs, this paper presents a new two stage converter combined with a coupling capacitor. A bottom switch of the first stage is removed and the switching nodes of the first stage and the second stage are coupled together by the coupling capacitor. The steady state analysis is performed and the...
This paper presents an analysis of two types of integrated charge pumps, Dickson and Fibonacci. The two circuits are compared in slow-switching conditions and at equal area occupation. A formula is developed for optimizing the capacitor sizes and improving the performance of the Fibonacci charge pump. The performance is evaluated with focus on voltage gain and output resistance and including the effects...
The memristor, the fourth element, after its invention by scientists at Hewlett-Packard Laboratories which published a paper on 1 May 2008 issue of Nature, has been capturing worldwide attention due to its potential significant applications. To impel the memristor's implementation in real-world, the more characteristics of memristor based circuit should be studied. In this paper, we study the filter...
Sigma-Delta modulator ADCs used in signal processing applications are usually implemented by switched-capacitor (SC) circuits and CMOS transmission gates. Clock feed-through effect is one of the main non-ideal parameters existing in SC integrators degrading modulator total SNDR and its linearity. In this paper, a comprehensive analysis of clock feed-through effect on CMOS transmission gates on both...
The model of static VAr generator (SVG) is carried out by state space averaging modeling and instantaneous reactive power theory. Based this model, the bivariate PI control strategy is applied in SVG. The DC-voltage reference is unascertainable in the control strategy, because of the equivalent resistance of the model is a nonlinear variable. Based on the model, the accurate mathematical model of...
Input-series and output-parallel (ISOP) inverter system is very suitable for high input-voltage and high output-current power conversion applications. Input voltage sharing (IVS) and output current sharing (OCS) between the modules of the ISOP inverter system are required for its proper work. A control strategy with load current controlled is proposed for ISOP inverter system in the paper to achieve...
This paper introduces a novel current-mode biquadratic circuit using only plus type differential voltage current-controlled current conveyors (DVCCCs) and grounded capacitors. The biquadratic circuit is constructed with two plus type dual current output DVCCCs (DO-DVCCCs) and two grounded capacitors. The circuit can realize biquadratic circuit transfer functions by choosing the appropriate input and...
The most important problem when economical autonomous transport means are created is stabilization of accumulated battery (AB) current. It is connected with the fact that discharge of AB by constant current improves working conditions and increase useful energy intensity, given by AB. It is suggested to use this for the stabilization of power buffer store (PBS). When transport mean is accelerating,...
The electric behavior of compact fluorescent lamps is analysed. In static conditions the lamp has a nonlinear voltage-current characteristic. In dynamic conditions the lamp has a dynamic conductance related to the static conductance by a differential equation. The lamp is simulated in two different circuits: one with a series reactor and another with a series reactor and a small capacitor in parallel...
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