A relay is a kind of electrical switch that employs the utilisation of an electromagnet. A relay's primary function is to control the on/off state of a high-current circuit from a low-current one.

1. The well-established relay-driving circuit uses an optocoupler to isolate the grounds and noise coupling between the low-voltage digital-control signal circuit (left) and the relay as load (right).

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 Micro ICCS relay has one analogue plus three digital inputs as well as two power outputs (high-sides) or one relay output and one signal output up to 2 watts. The use of the high-side-drivers ...

The PSR-MXF multifunctional safety relay is the newest addition to the Phoenix Contact PSR safety relay line. This relay can help small and medium machine builders reduce cost and save space. The ...

The PSR-MXF accepts up to three dual-channel safety sensors: two local, independent sensor circuits, as well as an overriding safety circuit useful for simultaneous shutdown. With this safety circuit, ...