Meet the Art Controller, a new dev board available over at Evil Mad Scientist Laboratories. It provides a drop-in solution for switching higher voltage loads (but not mains). The thing we like most… ...

Meanwhile, relay modules or relay boards are circuit boards that come in many different sizes and shapes. Most of them are rectangular, with 2, 4, 8, or 16 relays mounted.

FCL Components FTR-E1J Relay for EV chargers The newly launched FTR-EJ relay delivers 20A 800 VDC, 10A 1,000VDC high voltage switching, no ...

The 4 channel smart relay board is powered by a ESP32 WROOM providing the ability to safely control up to four appliances or devices on a load of 110-250 VAC/7A, 30 VDC/10A depending on your needs.

Relay contacts made from silver, gold-plated silver, silver oxide, and tungsten are used depending on the characteristics of the signals to be switched. RF and Microwave Considerations ...

The optocoupler’s dc output is at a level manageable for a digital input. The relay on PIN7 is connected to the low side of a relay (Fig. 3). A G5NB-1A-E DC12 relay was used for this article.