This work presents the analysis of radiated EMI problems associated with DC-DC buck converters and the solutions for minimize the reverse recovery of the Drain-Bulk diode of the synchronous switching MOSFET. The DC-DC buck converter topology is used in computers and telecom applications because of its high power efficiency and multiple DC levels. For reducing the reverse recovery and its relate...

The need to reduce a logic system’s noise emission is becoming ever more apparent with the increased use of high-speed electronics, and with the progressive tightening of regulations covering the amount of permissible radiated system noise. This article presents empirical and analytical techniques for effective EMI control of 54HC/74HC high-speed CMOS-logic circuitry. Several sources conduct or...

In the past, large external filters and shielded cables were the accepted ways to address EMI/EMC (electromagnetic interference or electromagnetic compatibility) in audio/video products. These methods added cost, adversely affected performance, and increased the size of the end product. As these products have decreased in size and evolved into the modern audio/video players, the solutions have ...

Background To explore the antioxidant and hepatoprotective effect of ethanolic Mangifera indica (EMI) and methanolic Mangifera indica (MMI) leaf extracts in mercuric chloride (HgCl2) induced toxicity in Swiss albino mice. Materials and methods Toxicity in mice was induced with HgCl2 (5.0 mg/kg, i.p.), followed by oral intervention with EMI and MMI extracts (25 mg and 50 mg/kg. body wt.) for 3...

The increases of operating frequency of electronic systems, electromagnetic interference (EMI) effect becomes a serious problem, especially in consumer electronics, microprocessor based systems, and data transmission circuits. Many approaches have been proposed to reduce EMI, such as shielding box, skew-rate control, and spread spectrum clock generator (SSCG). However, the SSCG has lower hardwa...

This paper presents a modeling of Pulse Width Modulation (PWM) for conducted noise reduction in Switching Power Converters (SPC) using Field Programmable Gate Array (FPGA) based controller. Buck boost Flyback converter is the preferred choice among variety of switching power converters due to its low component count, cost-effective structure as well as its large dynamic range. Converters should...

We propose a new similarity measure for iconic medical image registration, an Edgeworth-based third order approximation of Mutual Information (MI) and named 3-EMI. Contrary to classical Edgeworth-based MI approximations, such as those proposed for independent component analysis, the 3-EMI measure is able to deal with potentially correlated variables. The performance of 3-EMI is then evaluated a...

We propose a hybrid scattering parameter matrix for concurrent on & off – board EMI analysis of mixed RF-Digital Circuits. To start with, we first consider on–board EMI effects on digital circuits, particularly on an inverter to show the vulnerability of digital devices to RF interference and investigate both system and device level upsets due to adjacent EMI sources on Printed Circuit Boards (...