Circuits & Schematics Measurement

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 ...

Bill Schweber Electronic Design 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 ...

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 ...

Jeff Magee It is emphasised that this should not be used for medical purposes. Displays your pulse rate, blood oxygen level and a moving graph of each heart beat, the photoplethysmogram (PPG). About this project This project implemented on an ...

Tirdad Sadri Nejad Hackster.io With a code size of 1 KB on an ATtiny13A MCU, this tiny module measures voltages up to 22 volts and current up to 5 amps. There are a lot of so-called USB doctor modules which are used for monitoring currents flowing ...