[HomeBrew] 3 very good articles (understanding resistors, avoiding ground loops, modeling skin effect in Spice)

[To Possibilities]

EDN on-line has 3 very good articles that I though some of you would be 
interested in.

1. Five questions about resistors

Understanding this ubiquitous part can help you avoid common circuit 
problems.

The resistor is one of the simpler electronic components. Engineers 
seldom examine resistor characteristics until there's a resistor-related 
problem with a circuit design. You can probably resolve 90% of these 
problems after answering these five key questions:

   * How much voltage can I put on the resistor?
   * What will be the temperature of the resistor in my circuit?
   * How much surge will the resistor withstand?
   * What makes a resistor fail?
   * How much change in resistance can I expect?

The link for the full article is:

http://www.edn.com/article/CA6372835.html?nid=2431&rid=1354052530


2. Circulating currents...a.k.a. Ground loops.

Understanding how to avoid or minimize the effects of circulating 
currents can make your designs more robust. Every engineer should know 
the techniques for neutralizing this insidious phenomenon. Article 
discussion includes avoiding ground loops in back-panes/PCBs, digital, 
power supply, audio, RF and mobile applications.

The link for the full article is:

http://www.edn.com/article/CA6372822.html?nid=2431&rid=1354052530#circulating

Modeling skin effect in Spice

3. Skin effect causes increased losses as frequency increases. It also 
causes changes in signal velocity, degrading signal fidelity, especially 
the eye opening of high-speed data signals on long signal paths on pc 
boards and backplanes.

The link for the full article is:

http://www.edn.com/article/CA6372836.html?nid=2431&rid=1354052530

Ed, W1AAZ

Lots of books, parts, kits and test equipment for sale at:

http://mysite.verizon.net/topossibilities/

If you don't see what you need, check back (adding items weekly)