HV circuit breakers and protective relays in these settings protect large-scale electrical equipment, manage power flow and prevent damage from electrical disturbances.

This simple temperature relay circuit can be used to signal a fire or setpoint for temperature monitoring function. You need to adjust P1 so that T1’s base voltage is 0.5V smaller than the emitter ...

The second circuit adds a relay contact to power the load so that the stop pushbutton does not conduct load current. The industrial relay suggested can handle 15A AC or DC (up to 30V). Note that ...

We often marvel at the many things a 555 can do. But [Zafer Yildiz] shows us that it can even take the place of a PCB. You’ll ...

Designers frequently use special circuits to reduce the power required to hold a relay in the latched position. Analog circuits such as the "brute force" resistor-capacitor solution ...

Prevent arcing and extra power loss in a relay circuit by timing its switching at zero-crossing with a high-voltage GreenPAK IC.

The new RC series of printed circuit board (PCB) relays replaces and upgrades the RJxV Series PCB-mount relays. RC Series relays are designed to mount directly to a PCB using through-holes and can be ...