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Microcontroller as voltmeter, testing lithium - battery chargers, canceling common - mode voltage, and more
The circuit in "Microcontroller functions as voltmeter," by author Noureddine Benabadji is an extension of his previous Design Idea on how to use an analog input in a microcontroller lacking a built-in ADC (see "Microcontroller, JFET form … Details... more »
 
Design Ideas spark a variety of functional control circuits
If you need only a few nonvolatile gates, consider using a component common in analog- and mixed-signal systems, the digital potentiometer, instead of a PAL, GAL, or CPLD, as described in "Nonvolatile digital potentiometer gates logic signal.&qu … Details... more »
 
Design Ideas conquer power supply applications
A software solution is the simplest way to compensate the system offset when interfacing a resistive bridge sensor with an analog to digital converter (ADC) powered by a +5V single-supply power source. "Circuit compensates system offset of a loa … Details... more »
 
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