ADJ22012

A power relay is an electrical device for controlling one electric circuit by opening or closing another electric circuit remotely. Among all types of power relays, those rated for over 2 amps of current are the ADJ22012. This article will explore the application fields and working principle of the ADJ22012.

Application Fields

There are many applications for the ADJ22012 power relay, including telecommunication, computer, industrial equipment, automotive, and HVAC equipment. Telecommunications uses ADJ22012 power relay to switch large amounts of current, which can enable the equipment to determine if certain data is destined for other terminals. Computer applications, such as microprocessor control systems, use these power relays to switch large amounts of current between the system and other peripheral devices. Industrial equipment applications use them to switch large amounts of current, allowing the industrial machines and processes to operate efficiently. Automotive applications involve switches for electrical items such as headlights, windshield wipers, backup lights and seats. HVAC equipment often uses the ADJ22012 power relay as a switch for large currents, which can enable the system to switch between heating and cooling.

Working Principle

The ADJ22012 power relay is an electromechanical component that uses the electromagnetic force to move the contact points. When the current is applied to the relay coil, a magnetic field is created, which attracts a metal armature, which in turn closes the contact points. The contact points are usually made of silver, a metal known for its low electrical resistance. When the current is removed from the coil, the magnetic field collapses, which causes the armature to lose its attraction and the contact points open. Also, depending on the specific relay, there may be a small gap between the two contact points to prevent them from sticking together. This gap allows air to move which can help cool the contact points.

Conclusion

The ADJ22012 power relay is a highly reliable component used in many applications. It is capable of switching large amounts of current and is used in many fields, such as telecommunication, computer, industrial equipment, automotive, and HVAC applications. Its working principle is based on applying a current to the relay coil, which creates a magnetic field and attracts the armature. The attraction of the armature then closes the contact points which allows the current to flow. When the current is removed, the magnetic field collapses, the armature loses its attraction, and the contact points open.