Contents


Regulars 04 Trend


5G predictions for 2022


05 Technology 08 Circuit drill


The sensitivity of an overvoltage protection circuit


By Sulaiman Algharbi Alsayed, Managing Director, Smart PCB Solutions


11 Optical isolation


Optically isolated 0-5V analogue input modules By Professor Murat Uzam, Department of Electrical and Electronics Engineering, Yozgat Bozok University, Turkey


40 Products 42 Contact directory 43 Web locators


July 2021 www.electronicsworld.co.uk


Features


14 Confi guring switched-mode power supplies for high-redundancy applications By Alexander Mezin, Senior Field Application Engineer EMEA, SL Power Electronics


18 PCB layout techniques for eliminating EMI in LED driver circuits By Selim Borekci, Nihal C. Acar, Alper Candir and Halil I. Aytekin, Akdeniz University, Turkey


22 The benefi ts of eddy-current sensors By Glenn Wedgbrow, Business Development Manager, Micro-Epsilon UK


26 Displays are one of the key parameters for high-performance EV chargers By Paul Hooper, Sales and Marketing Director, Display Technology


30 LCD or OLED – which technology benefi ts gaming the most? By Dr. Franky So, Chief Technology Offi cer, NextGen Nano


32 Cloud computing in space By Dr. Fredrik Bruhn, Director, Unibap


34 Drones are taking off ! By Paul Kostek, Systems Engineer, Air Direct Solutions


36 Do one-off projects benefi t from contracting SAM services? By Stephen Armstrong, technical writer


EDITOR: Svetlana Josifovska Tel: +44 (0)1732 883392 Email: svetlanaj@electronicsworld.co.uk


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March 2022 Volume 127 Issue 2015 £5.90


SPECIAL REPORTS • Displays • Avionics • Power


• Design with sensors • T&M


ALSO IN THIS ISSUE… … space electronics,


electric vehicles, circuit design, circuit troubleshooting, and a lot more….


Component sourcing the “Green” way from Rochester


Electronics on p6


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