Circuits & Schematics Measurement - 18

Bogdan Raducanu EDN Testing power supplies or discharging batteries usually requires a constant-current load. Sometimes, however, you must study the behavior when the load is a resistor. Using a highpower potentiometer is an expensive approach that ...

Guy Hoover, Analog Devices Electronic Design A high-resolution SAR ADC often needs a higher-order antialiasing filter, such as the third-order version provided by this low-noise, low-power design. For many analog-to-digital converter (ADC) ...

Alfredo Saab EDN Temperature sensors must sometimes operate at locations whose return potentials differ considerably from that of the data-acquisition system's common that is, equipotential ground. In consequence, the temperature sensor's ...

A family of PTC thermistors conquers the calibration and linearity errors associated with conventional NTC temperature devices. Temperature is the most widely measured physical variable and designers have many sensing options, among them ...

Alfredo del Rio and Ana Cao y Paz EDN The use of a linear optocoupler and a capacitor-based power supply yields a simple, yet precise power-line-monitoring system. The circuit in Figure 1 converts the 110 V-ac power-line voltage to an ac output ...

Jeremy S. Cook hackster.io In this project, I am showing you how to build a digital laser tachometer based on Arduino for around 10$. If you need to measure rotational speed, you can just buy it or do it yourself and learn something while building ...

Emmanuel Odunlade electronics-lab.com One of the best things about being a maker is the ability to make your own tools. We have covered the development of several electronics tools in past, from voltmeters to battery testers. For today’s ...

Marián Štofka EDN The circuit in Figure 1 is an alternative to a high-side current monitor in a recent Design Idea (Reference 1). That monitor uses the Analog Devices AD8212 and an external high-voltage bipolar PNP transistor. The ...

Mirko Pavleski Arduino.cc A simple to build, but very sensitive electromagnetic field detector. This is a simple device capable of detecting very weak electromagnetic fields (Figure 1). The relative field intensity is displayed on the LCD display ...

Chau Tran and Paul Mullins, Analog Devices EDN You sometimes need to measure load currents as large as 5 A in the presence of a common-mode voltage as high as 500 V. To do so, you can use Analog Devices’ AD8212 high-voltage current-shunt ...