DESIGN IDEAS  
Read the latest design ideas  
 

Build an op amp with three discrete transistors

Lyle Russell Williams, St. Charles, MO - 1/1/2012

Diode ladder multiplies voltage under software control

- 1/1/2012

Charger extends lead-acid-battery life

Fran Hoffart, National Semiconductor Corp., Santa Clara, CA - 1/1/2012

Circuit provides more accurate multiplication

Yakov Velikson, Lexington, MA - 1/1/2012

A few added components make a self-contained controller for 100A load

Steve Hageman, AnalogHome.com, Windsor, CA - 1/1/2012

Simple night-light detects dusk via photoresistor

Chau Tran, Analog Devices, Malden, MA - 1/1/2012

Simple tester checks Christmas-tree lights

William Dias, Brown&Sharpe, North Kingstown, RI - 1/1/2012

Circuit controls amplifier that sets the gain of AGC system

Vladimir Rentyuk, Zaporozhye, Ukraine; Edited by Paul Rako and Fran Granville, EDN - 1/12/2011

Use a stopwatch to measure on time of light source

Ralf Kelz, Seefeld, Germany; Edited by Paul Rako and Fran Granville, EDN - 1/12/2011

Precision analog acquisition system can fit in pocket

Zoltan Gingl, University of Szeged, Szeged, Hungary; Edited by Paul Rako and Fran Granville, EDN - 1/12/2011
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