Designs Affecting Measurements of a Non-invasive Contactless Current Sensor

High frequency, high density power supplies are possible with gallium nitride (GaN) devices, which are ideal for aerospace, transportation, and medical applications. Certain design procedures must be taken into account when laying out the printed circuit board (PCB) and components. A multi-layer layout and tracing with copper pores, for example, would minimize the conduction path … Read more

Developing window security nodes with level shifting I/O – Part 2

The Part 1 of this two-article series discussed a new peripheral called multi-voltage I/O (MVIO), which is available on the AVR DB family of microcontrollers. In short, the MVIO is an internal level shifter on the die of the microcontroller that allows one I/O port to operate in a different voltage domain than the rest … Read more

IoT sensor platform heightens situational awareness

Flowfinity’s IoT sensor integration capabilities help utilities and enterprises achieve situational awareness to avoid downtime and service disruptions. Customers can leverage the Flowfinity platform to configure and install IoT devices that will gather the operational information needed to make informed decisions. Sensors pick up temperature, power consumption, water flow, liquid levels, vibration, and other relevant … Read more

2D LiDAR sensor increases detection coverage

With a 360° field of view and up to 16 evaluation fields, Quanergy’s M1 Edge PoE LiDAR sensor offers smart awareness for object detection and alerting. The 2D sensor is capable of detecting objects at up to 200 meters at 80% reflectivity and an angular resolution of 0.033°. According to the company, the sensor can … Read more

Advanced Scaling Techniques for PLC Analog Quantities

Configuring analog signals into usable digital quantities is accomplished by scaling function inside the PLC, which, along with analog signal wiring, is important to understand. In a previous article, we covered the need for analog signal scaling for many natural quantities like sound, light, and temperature. The process involves establishing a relationship between a physical … Read more

Dual N-channel JFET lowers noise in precision instrumentation and sensors

The LS844 monolithic dual N-channel JFET from Linear Systems provides low input capacitance, substantially reducing intermodulation distortion. Targeting precision instrumentation and sensor applications, the LS844 offers a combination of high transconductance, low noise of 2.5 nV/√Hz typical at 1 kHz, and low input capacitance of just 3 pF typical and 8 pF maximum. Constructed by … Read more

Smart Transformer Condition Monitoring with Smart Meter and Rogowski Coils

This article introduces Lems’s Rogowski coil with smart meter for accurate and easy-to-install smart current sensors for internet of energy. Smart Grid for the City The intelligent electricity network (smart grid) is the backbone of every smart city, since it:  Informs “prosumers” (proactive consumers or producers of energy) about their energy usage and enables them … Read more

Sleeping with the Google nest hub

Back in October 2020, EDN published my teardown of Google’s then-named Home Hub smart speaker and display, originally introduced two years earlier and subsequently renamed the first-generation Google Nest Hub. The second-generation iteration of the concept, unveiled in March 2021, notably added support for Project Soli, a low-power “miniature radar” also found in Google’s soon-obsolete … Read more

Slide-By Linear Position Sensing Using Angle Sensor ICs

This article discuss the advantages of using magnetic field angle sensor ICs over traditional single-axis sensor in terms of cost, reliability and accuracy. There are many applications, especially in automotive systems, where it is required to measure the horizontal motion of an object with high accuracy and good reliability. Some common solutions are based on … Read more