Designing an analog circuit can be a frustrating experience, as noted by Nick Cornford in his Design Idea (DI), “DIY RTD for a DMM.”With a fortnight’s struggle, I completed the design of 4 mA to 20mA, ...

Multiplex Large RTD Sensor Arrays For Lower Parts Count Sept. 18, 2000 Resistance temperature detectors (RTDs) are among the most versatile and accurate of the commonly used temperature sensors.

Traditionally, resistance-temperature-detector (RTD) sensor resistance is measured by applying a precision current source and measuring the developed voltage. This approach usually requires a ...