EMRFD Chapter 1 Errata.  
  (21 May 10)

 There is a major goof that showed up with the 3rd printing.   Evidently it happened at the printer.   The error, which is confined to Chapter 1, turns many italicized parts of the text into gibberish.   A proper version of the text can be found at the ARRL site by clicking here:  
http://www.arrl.org/product-notes     (17 April 09, url updated on 21May10)

p1,14, left col, 2.2 inches down from text top.  The 7812 has a max I of 1 A and not 0.5 A.  (16June03)

p 1.19, left col, 3.1 inch up from text bottom.  Replace "head sink" with "heat sink".   (15Jan10)