The electronic industry has grown vastly in recent years, and researchers are trying to minimize circuits delay, occupied area and power consumption as much as possible. In this regard, many technologies have been introduced. Quantum Cellular Automata (QCA) is one of the schemes to design nano-scale digital electronic circuits. This technology has high speed and low power consumption, and occup...

Electronic circuit production is a significant industry. Ever more complex behaviors are being demanded from electronic circuits, fuelled by relentless improvements in circuit embodiment technologies. Consequently a bottleneck is developing at the point of circuit design. Traditional circuit design methodologies rely on rules that have been developed over many decades. However the need for huma...

This paper proposes fluorescent electronic ballast with high power factor and low line input current harmonics. The system performance can be improved by a charged pump circuit. Details of design and circuit operation are described. The proposed electronic ballast is modified from single stage half bridge class D electronic ballast by adding capacitor parallel with each power switch and setting...

The Phase-Locked Loop (PLL) system is used extensively in modern electronic systems such as modems, mobile communications, satellite receivers and television systems. This work presents a method for modeling and simulation of second-order PLL in time domain to study transient behavior during frequency acquisition and tracking. Here we utilize a basic PLL system that consist a multiplier, used a...

Design For Test (DFT) means altering a circuit design to make it more testable. DFT for high frequency (>lOO MHz) analog integrated circuits seems destined to be limited to looparound testing and other such end-to-end test methods. Any circuitry used to modify, monitor, or inject signals into the middle of such circuits inevitably impacts the function’s performance greatly much more than for lo...

Wave Energy Converters (WECs) are an ideal solution for expanding the autonomy of surface sensor platforms such as oceanic drifters. To extract maximum amount energy from these fast-varying sources, a fast power point tracking (MPPT) technique is required. Previous studies have examined management units (PMU) with MPPT circuits, but none them demonstrated their feasibility in real-world scenari...

Background. A field study conducted by researchers found the balls used by visual impairment students at school basically used the sound by a small bell inside the ball. However, the sound emitted from the ball is very limited, the ball will sound when it is moved. This makes it difficult for students with visual impairments to find a missing ball that not emitted makes a sound. Objectives. A ...