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Content tagged with Advanced Technology
posted in January 2007
Improve Hall sensor rotor-position measurements: Part 1
Design How-To  
1/30/2007   Post a comment
Proper sensor management allows using low-resolution sensors without affecting control system performance, and cuts cost. This section describes the design task required and various sources of electric motor rotor position error.
Teardown: RIM fields BlackBerry with consumer appeal
Teardown  
1/22/2007   Post a comment
Though RIM's Blackberry 8100 "Pearl" delivers a petite EDGE-capable terminal that stays true to RIM's email focus, the addition of a camera and multicore processor brings the design much more in line with a traditional consumer phone.
Digital control challenges old ideas about power supply design
Design How-To  
1/17/2007   1 comment
Trade-offs are part of power supply designing but digital control is challenging these decisions. Find out how digital control is forcing a re-evaluation about using voltage-mode or current-mode control.
Philips' low-cost controller sets pace for Sony
Teardown  
1/15/2007   Post a comment
Game Elements wireless PS2 controller demonstrates that high-margin products such Sony's wired controller often come under attack from folks able to build and sell for less. The design and technology choices made here show an unrelenting effort to shave pennies from production cost wherever possible.
Design of High-Performance Balanced Audio Interfaces - Part 6
Design How-To  
1/14/2007   Post a comment
Balanced inputs benefit from specialized circuitry. The InGenius circuit silicon implementation differs from the discrete solution in many respects. Since all critical components are integrated, a well controlled interaction between resistor values and metal traces can be duplicated with similar performance from die to die. But the integration of certain components creates new challenges.
Design of High-Performance Balanced Audio Interfaces - Part 5
Design How-To  
1/14/2007   Post a comment
Balanced inputs benefit from specialized circuitry. The InGenius circuit silicon implementation differs from the discrete solution in many respects. Since all critical components are integrated, a well controlled interaction between resistor values and metal traces can be duplicated with similar performance from die to die. But the integration of certain components creates new challenges.
Design of High-Performance Balanced Audio Interfaces - Part 4
Design How-To  
1/10/2007   Post a comment
High signal-to-noise ratio is an important goal for most audio systems. However, ac power connections unavoidably create ground voltage differences, magnetic fields, and electric fields. Balanced interfaces, in theory, are totally immune to such interference. Bill Whitlock describes a new type of IC used to create balanced interfaces.
Wi-Fi chips deliver portable Internet radio to the mainstream
News & Analysis  
1/2/2007   Post a comment
A pair of U.K. companies think they have a handle on the next big thing in the audio consumer space: Wi-Fi-enabled Internet radio.


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Max Maxfield

The Best of the Best Videos on YouTube
Max Maxfield
4 comments
A couple of days ago, my chum Paul was visiting me in my office. He'd wandered over from his cubicle in the next bay to take a brief coffee break. This week, Paul had been admiring the ...

Jolt Judges and Andrew Binstock

Jolt Awards: The Best Books
Jolt Judges and Andrew Binstock
1 Comment
As we do every year, Dr. Dobb's recognizes the best books of the last 12 months via the Jolt Awards -- our cycle of product awards given out every two months in each of six categories. No ...

Engineering Investigations

Air Conditioner Falls From Window, Still Works
Engineering Investigations
2 comments
It's autumn in New England. The leaves are turning to red, orange, and gold, my roses are in their second bloom, and it's time to remove the air conditioner from the window. On September ...

David Blaza

The Other Tesla
David Blaza
5 comments
I find myself going to Kickstarter and Indiegogo on a regular basis these days because they have become real innovation marketplaces. As far as I'm concerned, this is where a lot of cool ...