When we think of relays, we tend to think of those big mechanical things that make a satisfying ‘click’ when activated. As nice as they are for relay-based computers, there are times when you don’t ...

A motor protection relay safeguards electric motors by detecting thermal stress, phase imbalance, stall, and abnormal ...

Protective relay testing verifies that installed relays will trip correctly under real fault conditions, confirming settings, ...

Relays usually are driven using optocouplers, which offer isolation between analog and digital grounds to ensure that switching currents in the relay coils do not affect the noise margin of the ...

Switching applications involving controlling devices or appliances using digital-I/O lines through a relay often need to indicate the change of state of the I/O line and, hence, the connected device.

The LAA125L is an optoMOS relay featuring an optically coupled output with low drive power requirements. It has no moving parts and does not generate EMI/RFI interferences. The LAA125L is an optoMOS ...

Every car in the junkyard has value. It all comes down to paying attention to opportunities when they arise. Car Craft family member Tim Moore is a card-carrying JYB-er who keeps his eyes open and is ...

An RC circuit in series with the coil allows full-current turn-on for reliable relay operation, then reduces the current to save power. Fellow engineer Sanjay R. Chendvankar of Mumbai, India, recently ...