March 9, 1998 Magazine Archive

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ISSUE DATE: MARCH 9, 1998

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Op amps, ADCs, Power management, Design Services, Planar transformers, AWGs

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Browse Archived Articles By: Issue | Author | Department | Topic

March 9, 1998 - In This Issue

[Design Application]
The Next-Generation System Power Management
— Contributing Author

[Design Application]
Planar Transformers Make Maximum Use Of Precious Board Space
— Contributing Author

[Design Application]
State-Of-The-Art AWGs Shuffle The Cards On Telecom Testing
— Contributing Author

[Ideas For Design]
PC signal generator uses a C++ class
Described here is a class used in the generation of audio frequency sinusoidal signals and white noise using a PC. The generator hardware must include a DAC of no more than 16-bit resolution and must use the double-buffered memory technique. This... — Contributing Author

[Ideas For Design]
Servo-motor acceleration control via armature current integration
Whenever the speed of a dc servo motor must be controlled with absolute accuracy, there’s no substitute for tachometer-based feedback combined with a fullblown servo loop. But in other applications, adequate steady-state precision and sometimes... — W. Stephen Woodward

[Ideas For Design]
A complete battery backup solution using a rechargable NiCd cell
Battery-powered systems, including notebook computers, personal digital assistants (PDAs), and portable instruments, require backup systems to keep the memory alive while the main battery is being replaced. The most common solution is to use an... — Contributing Author

[Ideas For Design]
Digital logic interface for power-MOSFET control
Power MOSFETs have become increasingly popular for use in numerous high-power applications. But the major drawback of a typical industrial power MOSFET is that it requires a minimum gate threshold voltage of about 4 V (preferably about 8 V for... — Contributing Author

[Ideas For Design]
Regulated LCD-bias generator requires no inductor
Astringent height limitation on pc boards employed in PDAs and palmtop computers requires using expensive, low-profile inductors in switchmode power supplies. As an alternative, however, you can replace certain switchmode circuits with one based on... — Contributing Author

[Pease Porridge]
What's All This International Business Travel Stuff, Anyhow? (Part II)
As I was saying in my Aug. 4, 1997 column "What's All This International Business Travel Stuff, Anyhow?" I was about to do some international traveling and lecturing. I'd be traveling to South... — Bob Pease

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