As [Mic] often got requests to make high-power switching boards, he recently finally gave in and designed the one shown above based around a solid-state relay. Some of our readers that already ...

But what if all you have on hand is an ESP8266? [TechColab] needed to control a solenoid valve with a short pulse via a solid-state relay (SSR) but found that the trusty 555 timer was tricky to ...

A relay that contains no mechanical parts. All switching mechanisms are semiconductor or thin film components. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction requires permission.