I am just finishing a new transmitter facility at the Empire State Building and there were a couple of times that I needed power supplies to keep various relays energized (like remote interlocks) or ...

The addition of a components and an unused NC contact to a dc supply provides a power-reducing feature to a relay driver circuit. Electromagnetic relays need much less power for holding than they do ...

Door interlocks are being used more frequently for facilities requiring a higher level of security, such as bio-medical facilities built to serve the healthcare industry. While some projects use ...

Weymouth, Mass. — Accommodating virtually any lock-out switching application in the electric power industry, a new series of lock-out relays (LORs) from Electroswitch provide reliable protection of ...

Since the mid-1980s, semiconductor technology has promised to provide smart power products for solid-state relays that could carry high current and provide unique functions for customers. However, ...