Dan, You will have to take that issue up with Mr. Shelton. I did warn you about the typo's, now didn't I. Another curious thing is he uses the term of impedence for resistance as to what a resistor does in an electrical circuit. Most of us that blew fuses for a living, as I did, use the word impedence around non-DC circuits and inductors. I believe all that relly doesn't matter if it helps guys/gals new to electricity learn.

Six volt guy living in a twelve volt world