Battery Emulation Circuit Speeds Charger Testing
May 1, 2008
A simulated load circuit verifies the dc response and dynamic stability of a Li-ion battery charger in a faster, more convenient manner...
Test Saturation Voltage to Achieve High Efficiency
Apr 1, 2008
Build a low-cost saturation tester to measure the saturation
voltage of switching transistors accurately in the presence of
high switching voltages or noise...
Test Saturation Voltage to Achieve High Efficiency
Mar 1, 2008
Efficiency is the name of the game in the design of power supplies. This is a major reason why switch-mode power supplies (SMPSs) are chosen for power-supply...
Assess On-Resistance At the Wafer Level
Sep 1, 2007
A new test capability enables accurate RDSON measure- ON
ment prior to packaging of the power MOSFET, reducing
development time and manufacturing costs, and allowing
device screening....
Spotlight on Test and Measurement
Jun 1, 2007
Power Component Reliability Tester Intepro Systems' SEMTest stress-screening system performs accelerated lifetime testing of power semiconductors and modules incorporating IGBT, MOSFET, SCR, diode and bipolar parts....
Waveform Scanning Solves Power-Design Challenges
Mar 1, 2007
The comprehensive analysis of basic switch-mode powersupply
functions enabled by oscilloscope feature sets can
close the loop for power-supply development....
Digital Power Control Enables System Identification
Nov 1, 2006
Despite obvious advantages over analog controllers, the limited power of today's digital controllers requires careful measuring techniques to accurately capture the real-time response of the control loop....
Oscilloscope Search Tool Finds Faults Fast
Oct 1, 2006
The latest additions to LeCroy's WaveRunner Xi and WaveSurfer Xs oscilloscope product lines introduce a novel search and analysis feature that designers...
Ferrite Out Better Core Materials For Your POL Design
Oct 1, 2006
The latest generation of powdered-iron and ferrite materials for inductor cores provide power designers with new options for increased efficiency or power density in dc-dc converters....
Accurately Test Magnetics Carrying DC Bias Current
Sep 1, 2006
A new method of injecting dc current into power inductors
enables designers to avoid common pitfalls when measuring
these devices, thus minimizing measurement errors....
Our Industry Looks Increasingly Global
Jun 1, 2006
A few months ago, we ran an Executive Viewpoint column that posed the question, Is Your Job Going To China? The author wasn't merely asking the question,...
Performing Thermal Analysis in System
May 1, 2006
Integrated circuit (IC) manufacturers normally publish a thermal resistance rating ( thermal resistance from die junction-to-ambient air) on their data...
PEM Fuel Cells Emerge from Niche Markets
May 1, 2006
Fuel cell technology has received a great deal of attention as a vital component in the highly anticipated, though as of yet postponed, emergence of the...
Commercial Instruments Measure True AC Power
Mar 1, 2006
In 1776, Scottish economist Adam Smith introduced the concept of division of labor and specialization, concluding that it is in the economic interest...
