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.

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 ...

Even though the function of single phase and three phase relays are quite similar, their applications can vary significantly. This is primarily due to the characteristics of three phase power circuits ...

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).

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 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, ...

[Glitch] got his hands on a slew of relays which are meant for use in industrial equipment. They are designed to operate at 24V. He wanted to use these with common microcontrollers and instead of b… ...