Electronics World Cover,TOC,and list of posted Popular Electronics articles QST Radio & TV News Radio-Craft Radio-Electronics Short Wave Craft Wireless World About RF Cafe RF Cafe Homepage RF Cafe in Morse Code Google Search of RF Cafe website Sitemap Electronics Equations Mathematics Equations Equations physics Manufacturers & distributors Engineer Jobs Twitter LinkedIn Crosswords Engineering Humor Kirt's Cogitations Engineering Event Calendar RF Engineering Quizzes AN/MPN-14 Radar 5CCG Notable Quotes App Notes Calculators Education Magazines Software,T-Shirts,Coffee Mugs Articles - submitted by RF Cafe visitors Simulators Technical Writings RF Cafe Archives Test Notes RF Cascade Workbook RF Stencils for Visio Shapes for Word Thank you for visiting RF Cafe!

Sherlock Ohms: The Case of the Common Ground

Sherlock Ohms: Looking for Common Ground - RF CafeYou have probably heard the old (erroneous) adage, "Ground is ground the world around." That might have been true prior to the advent of electronics, but it certainly isn't so anymore. Even in the vacuum tube days it wasn't so. Once frequencies get high enough that reactance rivals resistance for dominance, you can forget about simple grounding concepts for anything other than providing a measure of safety against electrical shock. This latest installment of EDN's Sherlock Ohms series is an account by John Lombard on his experience in, "Looking for Common Ground." He begins, "The term 'ground' should be used more carefully. In our equipment, we distinguish between ground and DC common for good reason. Ground refers to chassis or safety ground to take errant AC voltage to ground instead of through an operator's body..."






Posted  September 19, 2013
 

Try Using SEARCH to Find What You Need.  >10,000 Pages Indexed on RF Cafe !

Copyright 1996 - 2016
Webmaster:  Kirt Blattenberger, BSEE - KB3UON
Family Websites:  Airplanes and Rockets | Equine Kingdom

All trademarks, copyrights, patents, and other rights of ownership to images
and text used on the RF Cafe website are hereby acknowledged.