The simple act of pressing a car’s power-window button and having the window roll up brings quite a few components into play. If the window does not roll up, it likely means there’s a problem with one ...

The term “relay” is usually only mentioned when a component like a fuel pump or a fan stops working, or some new ...

The intercom goes ultra-high-tech with this snazzy switch system from Wink. A smart thermostat? Smart light switches? Amateur hour. If you really want to up your smart-home game, it’s time to get ...

This mini-series of articles describes how to build a computer’s CPU (central processing unit) out of relays. “Y” in English sounds like “guay” in Spanish (my mother tongue), a colloquial expression ...

Relays are electromechanical devices that use a magnetic solenoid to actual a switch. When current is passed through the solenoid coil, it produces a magnetic field. The magnetic field is strengthened ...