An electrical relay is a type of heavy-duty, remote-control switch able to handle high-current accessories, yet capable of being actuated by substantially less current. Relays install between the ...

The fan center’s purpose is to control when the indoor fan turns on. Before the integrated gas control board, the indoor fan on gas and oil furnaces would either turn on at the same times as the heat ...

This Design Idea shows how to use a 63¢ (Q=1) microprocessor reset voltage detector IC in a relay coil drive circuit to greatly reduce the coil’s hold-in current. When asked to estimate the coil ...

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. I’ve always thought it would be funny to build scale-size ...

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 ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Among his numerous innovations, Nikola Tesla dreamed of creating a way to supply power to the ...