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Due to with the actuality of the task of interconnection of non-synchronously operating alternating current energy systems, an experimental comparison of the interconnection devices models, which implement various methods of operation of these devices, is required. Therefore, a stand is needed, that allows conducting experimental studies with the specified models of devices. The basis of the stand...
The track of the maximum power point (MPPT) is an important part of photovoltaic systems. Incremental conductance method is considered to be the most commonly used method because it is less complicated and has good tracking accuracy.
The design of high performance circuits with short manufacturing cycles and low cost demands reliable analysis tools, capable to accurately predict the circuit behaviour prior to manufacturing. In the case of nonlinear circuits, the user must be aware of the possible coexistence of different steady-state solutions for the same element values and the fact that steady-state methods, such as harmonic...
This paper introduces a memristor based redundant binary adder for canonic signed digit code, that coding eliminates the carry and provides a carry-free addition. The proposed binary adder circuit tries to achieve high addition speed that is independent on the length of the data using the accumulation property of a Nano-element called a memristor. The general block diagram of the proposed circuit...
In this paper a PSPICE model of the equivalent circuit of the titanium-dioxide memristor is created based on its current-voltage relationship and using linear ionic drift model. By use of this computer model a Wien memristor generator is created. The oscillator circuit is analyzed and the basic relationships and time diagrams are given. The phase portrait of the system is also presented. The regulation...
In this paper, we present a MOSFET-based Colpitts oscillator based on a “zero-threshold” transistor operating at a supply voltage below 20 mV. The circuit was carefully analyzed and expressions relating the start-up conditions and the voltage supply, as well as the oscillation frequency were developed. Measurement results obtained on a discrete prototype confirmed the low-voltage operation of the...
A multioutput current-controlled current conveyor (MOCCCII)-based function generator is proposed, which provides a mixed-mode sinusoidal four-phase quadrature outputs, square and triangular voltage outputs simultaneously. The starting building block of the proposed function generator is a single output current-controlled current conveyor (CCCII)-based voltage-mode sinusoidal quadrature oscillator...
A function generator circuit using positive type second-generation current-controlled current conveyors [CCCII+]-based voltage mode non inverting band-pass filter (BPF) as a starting building block is proposed. A direct feedback path from the output to the input of the BPF is provided to obtain a sinusoidal oscillator. Then, [CCCII+(2)] of the sinusoidal oscillator is replaced by multioutput current-controlled...
Switching regulator is used in many electronics devices because of its small size and low power consumption. Sawtooth wave is one of the important components of the switching regulator and determines the accuracy of the duty ratio of the switching regulator. When the sawtooth wave has fall time, the duty ratio has an error. In this paper, method to realize sawtooth wave generator which has slight...
The multifractional process is introduced as a natural extension of traditional monofractional process. The selling point of multifractional process is that its Hölder regularity is allowed to vary from point to point, such that makes it a promising model for those stochastic processes whose regularity evolves in time. A new wavelet-based algorithm to synthesize a realization of multifractional process...
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