Skip to Content
Practical Electronics for Inventors, Fourth Edition, 4th Edition
book

Practical Electronics for Inventors, Fourth Edition, 4th Edition

by Paul Scherz, Simon Monk
April 2016
Beginner
1072 pages
39h 7m
English
McGraw-Hill Education TAB
Content preview from Practical Electronics for Inventors, Fourth Edition, 4th Edition

2.28 Power in AC Circuits (Apparent Power, Real Power, Reactive Power)

In a complex circuit containing resistors, inductors, and capacitors, how do you determine what kind of power is being used? The best place to start is with the generalized power law P = IRMSVRMS. However, for now, let’s replace P with VA, and call VA the apparent power:

VA = IRMSVRMS

(2.74) Apparent power

In light of our RL series circuit in Fig. 2.167, we find the apparent power to be:

VA = IRMSVRMS = (0.107A)(12 V) = 1.284 VA

The apparent power VA is no different from the power we calculate using the generalized ac power expression. The reason for using VA instead of P is simply a convention used to help distinguish the fact that the calculated power isn’t purely ...

Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.

Read now

Unlock full access

More than 5,000 organizations count on O’Reilly

AirBnbBlueOriginElectronic ArtsHomeDepotNasdaqRakutenTata Consultancy Services

QuotationMarkO’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.
Julian F.
Head of Cybersecurity
QuotationMarkI wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.
Addison B.
Field Engineer
QuotationMarkI’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.
Amir M.
Data Platform Tech Lead
QuotationMarkI'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
Mark W.
Embedded Software Engineer

You might also like

Make: Electronics, 3rd Edition

Make: Electronics, 3rd Edition

Charles Platt

Publisher Resources

ISBN: 9781259587559