By D. Prabakaran, May 12, 2003
Use a current transformer to build an easily-constructed ac-power meter.
By W. Stephen Woodward, May 07, 2001
By combining an airspeed sensor and solid-state airflow detector, this robust device thus implements a simple, linearized, ambient-temperature-compensated thermal anemometer that can sense virtually any range of airflow rates.
By Matt Smith, September 05, 2000
This circuit, based on the Analog Devices ADM1023 temperature-monitor IC, can be used to determine the core temperature of your PC’s CPU and display it on a monitor.
By W. Stephen Woodward, April 14, 1997
A simple, optically-isolated wattmeter circuit may be used to convert power readings from one or more phases to a 1-Hz/W frequency output. It's based on a variant of a Gilbert-cell analog multiplier.
By Contributing Author, May 01, 1998
Here's how to use programmable DSPs to generate advanced pulse-width-modulation (PWM) signals. The article covers three commonly-used PWM techniques: sinusoidal, hysteresis (bang-bang), and space-vector (symmetrical or asymmetrical) implementations.
By Louis Vlemincq, May 07, 2009
The use of a copper winding as a temperature sensor for transformer windings is not new. But the circuit presented here goes further. It can make the measurement in-circuit and in real time.
By Anthony H. Smith, June 11, 2009
Monitoring the current taken by a mains-powered appliance can be a challenge. Here's an approach centered on Hall-effect sensors and current-sense transformers, which afford the galvanic isolation required for operator safety.
By W. Stephen Woodward, July 23, 2009
Delta VBE themometry design idea exploits the ohmic-error immunity of the tri-current VBE principle by adding a front en of temp-sensor transistors, thus achieving cost-effective temperature measurement.
By ED News Staff, July 28, 2009
This video is a system level overview of the basic operating hardware of the Model 4200-SCS semiconductor characterization system.
This video is a demonstration of Keithley's Series 2600A Source Meter instruments. After a brief introduction, the presenter shows how quickly and easily users can get results in lab and benchtop applications using the built-in TSP Express software tool.
By David Maliniak, December 02, 2010
Agilent Technologies' 53200 Series of frequency counter/timers measures single-shot time intervals as low as 20 ps.
By David Maliniak, December 21, 2010
The test bench is evolving toward greater integration, more bandwidth, higher sampling rates, and modularity.
Presented By Maxim
Presented By Datatronics
Presented By Micropower