recovery of gold and other valuable metals from electronic scrap involves a complex metallurgical flow sheet and requires state-of-the-art recovery technologies that are available in large-scale, integrated smelter and refinery operations. at the end of their use, electronic and other electrical product scrap offer an important recycling potential for the secondary supply of gold and silver int...

This paper an presents analysis of metals in waste of printed circuit boards (PCB) covering types of PCB, segregated from PC computers, mobile phones, and mixed. The presented data identifies metals and other substances found in PCB waste based on elemental and technical analysis of PCBs. PCB categorization based on gold concentration is presented, resulting in two groups: electric and electron...

Electronic waste, with printed circuit boards (PCBs) at its heart, is the fastest-growing category of hazardous solid waste in world. New materials, particular biobased show great promise solving some sustainability and toxicity problems associated PCBs, although several challenges still prevent their practical application.

From the use of renewable resources and environmental protection viewpoints, recycling of waste printed circuit boards (PCBs) receives wide concerns as the amounts of scrap PCBs increases dramatically In recent years there has been increasing concern about the growing volume of end of life electronics and the fact that much of it is consigned to landfill w ithout any attempt being made to recyc...

A novel dual-side mushroom ground plane (DMGP) structure is proposed for the noise suppression in high-speed multilayer printed circuit boards (PCBs). The proposed method is localized suppression technique where a dual-side mushroom structure is placed below the noise-sensitive device. In multilayer PCBs with DMGP, noise between two ports with large or small ports spacing can be minimized effec...

Printed Circuit Boards (PCBs) are electronic boards that hold components together and provide the electrical connection between these components. circuit offer many advantages over traditional wired circuits, such as durability, less heat, minimal wiring, ease of assembly. Correct design production printed significantly affect quality efficiency boards. In this study, a defect detection system ...

With the increasing density of components on Printed Circuit, Boards (PCBs) and the a.dvancement of fabrication technologies for multilayer PCBs, improvement of speed and techniques for the Computer Aided Design of multilayer PCBs has become a major area of research. The paper discusses the parallel processing of layering and routing algorithms for design of multilayer PCBs on a network of smal...

Patterned structures of flexible, stretchable, electrically conductive materials on soft substrates could lead to novel electronic devices with unique mechanical properties allowing them to bend, fold, stretch or conform to their environment. For the last decade, research on improving the stretchability of circuits on elastomeric substrates has made significant progresses but designing printed ...

esting of medium-complexity printed circuit boards (PCBs) at the end of production has traditionally been carried out using in-circuit testing (ICT) and functional testing. Other test methods, such as costly optical and X-ray inspection, are often necessary to verify that BGAs are correctly placed. JTAG boundary scan however, can replace ICT as the natural counterpart to functional testing and ...

Far-End crosstalk is a common problem in a printed circuit boards when two transmission lines are in close proximity. This paper proposes a newly designed method to reduce the far-end crosstalk using metamaterials as a complementary split ring resonator (CSRRs). The CSRRs are etched in the ground plane and are used to control the radiated electromagnetic fileds. Comparative analyses are taken f...