Its function is to transform the line voltage to the relay logic voltage and handle the contactor coil inrush current. Contactors with AC coils draw about 5 times rated current until the magnetic ...

Interrupting low-voltage circuits handled by general-purpose relays is fairly straightforward. However, as circuit voltage increases, so too does the difficulty. Interrupting a kilovolt circuit with ...

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).

Testing relays and their circuits in vehicles doesn’t always require a trip to the bench. With a few simple tools and knowledge, this video shows how to test relays directly in your car using a test ...

[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… ...