May 2005
Beginner to intermediate
398 pages
12h 12m
English
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Batteries
Batteries are easy to use. The only caveat is to ensure that the battery (or batteries ) you have chosen can supply enough current at the right voltage. With the right choice of battery and a carefully designed system, you can achieve extended operation over very long periods. For example, a small PIC- or AVR-based computer can (depending on application and design) operate for up to two years off a single AA battery. A poorly designed system can drain a battery in minutes. A poorly chosen battery unable to supply sufficient current will result in erratic operation, or may result in the system being unable to start at all. When choosing a battery, consider not just its average current capability but also its peak current. An embedded computer may need only an average supply of 20 mA but may require as much as 100 mA at peak loads. This is especially true of systems using flash memory, which may require high currents during write operations. The battery for such a system must be able to supply not just the continuous load, but also the peak load when required.
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O’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.
I 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.
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I'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.