|
By Don Tuite, Analog & Power Editor
Philips Electronics is the first company to submit a
prototype LED replacement for the common 60-W bulb in the U.S.
Department of Energy's $10 million Bright Tomorrow Lighting Contest.
However, Congress has yet to appropriate funding for the prize, and
questions remain about contest eligibility.
READ THE FULL
ARTICLE
|
Vote For
The 2009 Engineering Hall of Fame Inductees!
Engineering giants such as Jack Kilby, George Philbrick, and Bob Pease
are already members of Electronic Design’s Engineering Hall
of Fame. Now it’s time to induct the 2009 class. Who deserves the
honor? It’s up to you! Read over our list of nominees and vote for your
favorites. We’ll report on the winners in our December 1
issue.
|
|
By Firas M. Ali Al-Rae
This circuit provides three levels of speed control for a dc
motor, using a PC's parallel port (LPT1). A C++ program performs the
control functions by allowing the signals from the PC port to deliver
three different voltages to the motor.
READ THE FULL
ARTICLE
|
2009 Readers' Choice
Survey
2009 saw many significant innovations. Now it's time to choose the best
of the bunch. Our December 1 Best Electronic Design issue will
feature a look at the best Leapfrog technology of the year and name the
year's best Idea for Design, both chosen by you, our readers.
What was the best Leapfrog story of the year? Go to this
survey for a list of nominees, determined by traffic on
www.electronicdesign.com, and select your favorite.
And, what was the best Idea for Design of the year? Go to this
survey for the nominees, and choose the best.
Thank you for your input!
|
|
Targeting compact audio systems, the Maxim Integrated
Products MAX9867 stereo audio codec integrates digital microphone
support and programmable digital filters. It offers a complete record
path with stereo differential microphone inputs and stereo single-ended
line inputs as well as support for traditional analog
microphones.
READ THE FULL
ARTICLE
|
|
B&K Precision's 9150 series of single-output,
linear-regulated dc power supplies includes four models with varying
voltage and current levels in the 500-W range. All four models are
programmable via USB or RS-232 using standard SCPI commands and deliver
clean, reliable power with high resolution and accuracy, according to
the company.
READ THE FULL
ARTICLE
|
|
The TPS727xx family of low dropout regulators (LDOs) from
Texas Instruments achieves an 8-µA quiescent current by way of an auto
low-power mode that teams with a transient response of ±50 mV while
maintaining low noise and a high power-supply rejection ratio
(PSRR).
READ THE FULL
ARTICLE
|
|
The AVX Corp. zinc-oxide-based UltraGuard varistor series now
includes a higher-voltage (18-V) version that exhibits a lower leakage
current of 1 µA maximum. The multi-layer ceramic varistors also feature
non-linear, bi-directional voltage-current characteristics similar to
back-to-back Zener diodes with an EMC capacitor in
parallel.
READ THE FULL
ARTICLE
|
|
SUBSCRIBE TO
Electronic
Design
 |
| Engineering TV |
 |
|
