EDN

Smart Outlet Strip: AC Power Switch with Relay

This AC power switch circuit senses the presence of AC current in one outlet of a multi-outlet power strip and switches power to the remaining outlet(s). It utilizes a current transformer, single ...
Electronic Design

What’s the Difference in Switching Design Between AC and DC Power Relays?

Power relays are specifically designed to handle either AC or DC. It’s important to know the fundamental differences between them before building them into a system. Introduction to AC and DC Power ...
EDN

WCS2702 Hall Effect Linear Current Sensor

This post is a quick writeup about Winson WCS Series Hall Effect Linear Current Sensors! I have the Winson WCS2702 current sensor in my hand right now, so I will write about it here. According to the ...
Electronic Design

Testing Open- and Closed-Loop Current Sensors

Open-loop current sensors have a definite price advantage over closed-loop counterparts. While you can use them in drive applications where torque accuracy isn't demanding — such as pump and fan ...