Print this page PoweredUSB, Make the USB Cable Robust & Include 12 & 24 Vdc
Clifford T Johnson, P.E., CSE
Course Outline
This course will introduce you to the need for a better way of powering peripheral devices attached to your industrial and commercial (POS) computers by combining the USB connection with the power cable for the device. New devices, such as printers, scanners, etc., are beginning to employ this method of connection eliminating the clutter of several 5, 12, or 24 Vdc separate power supplies and cables. Major POS manufacturers, including Dell, Epson, Fujitsu, HP, IBM, NCR, Star Micronics and Wincor, have accepted PoweredUSB technology.
This course includes
a multiple-choice quiz at the end, which is designed to enhance the understanding
of the course materials.
Learning Objective
At the conclusion of this course, the student will learn:
- The reason for PoweredUSB development;
- The need for new connectivity;
- The robustness of the connections;
- The plugs and receptacles used for interfacing; and
- The present device availability.
Intended Audience
Architects and engineers charged with designing Point of Sale terminals and operator stations in plant, retail, and office environments.
PoweredUSB is an extension to the Universal Serial Bus connectivity standard that addresses the two key shortcomings of conventional USB:
- Power USB 1.X and 2.0 only support devices at 5 Volts and up to 0.5 Amps. While this is more than sufficient for low-power devices like keyboards, mice and flash drives, peripherals with greater power requirements – including external hard drives, printers and scanners – require external power supplies.
- Robustness Conventional USB connectors are not positively locked into their corresponding plugs, making them relatively easy to jar loose.
Course Content
The course content is contained in the following PDF file:
PoweredUSB, Make the USB Cable Robust & Include 12 & 24 Vdc
Please click on
the above underlined hypertext to view, download or print the document for your
study. Because of the large file size, we recommend that you first save the
file to your computer by right clicking the mouse and choosing "Save Target
As ...", and then open the file in Adobe Acrobat Reader. If you still experience
any difficulty in downloading or opening this file, you may need to close some
applications or reboot your computer to free up some memory.
Course Summary
By the end of the course you should be able to determine if you need to upgrade existing installations to eliminate clutter and connection problems. New installations using PoweredUSB can be designed without the need for power strips of the past making them more serviceable.
Related Links
Dispersed through the course are links to various articles that are relevant.
Quiz
Once you finish studying the above course content, you need to take a quiz to obtain the PDH credits.
DISCLAIMER: The materials contained in the online course are not intended as a representation or warranty on the part of PDHonline.com or any other person/organization named herein. The materials are for general information only. They are not a substitute for competent professional advice. Application of this information to a specific project should be reviewed by a registered professional engineer. Anyone making use of the information set forth herein does so at their own risk and assumes any and all resulting liability arising therefrom.
