18821 Relays

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Relay sockets are devices used to control the flow of electrical energy through machines. They provide a way to control the power, or current, to work with either AC or DC powered machines. The type of relay socket and its electrical applications depend on the specific type and its related working principle.

Generally speaking, there are two prominent types of relay socket: El-81821 and JX-71917. El-81821 relay sockets are among the most popular types of the relay socket. The operating principle of this particular type of socket relies on the turning off and on of an electromagnet coil by magnetically coupling. The El-81821 sockets are designed for use with AC operated machines, and are typically rated between 16-20 Amps.

In order to provide the best power protection and functionality in AC powered applications, the El-81821 coil is magnetically coupled with an electromagnetic field. When the electromagnetic field is applied, the mechanical force of the field is used to move the contacts inside the socket. When a certain pressure is exceeded in the socket, the contacts close, allowing the current to flow through. When the field is removed, the contacts open and the current is interrupted.

The JX-71917 is another type of relay socket. In this assembly, the working principle relies on the use of a mechanical spring loaded switch. In the JX-71917 assembly, the spring is positioned in a fixed location along the movable contact inside the socket. When a certain level of pressure is applied, the spring releases and forces the contact to move. This movement is responsible for closing the contacts and allowing the current to flow when the contacts are pushed closed, and breaking the current when the contacts are pushed open.

In order to make sure the JX-71917 relay socket works properly and reliably for DC application, the contact is designed to provide the weakest possible contact configuration. This particular design allows the contact to continually and easily open and close following the electrical current in the application. Additionally, to prevent overheating, and to help with noise immune operation, the JX-71917 sockets are designed to minimize the arcing between the contact points.

For both types of relay socket, proper maintenance is important to ensure efficient performance and long lasting use. Factors such as dirt and dust, chemical exposure or drops can compromise the performance of the socket. Additionally, special attention should be given when affixing a relay socket into its surrounding area, as lack of proper installation can further damage the unit. Regular inspection and cleaning, as well as proper installation of the device are essential for proper operation.

It is essential to understand the different working principles of El-81821 and JX-71917 relay sockets when considering their application for AC and DC powered machines. It is also important to consider the importance of properly maintaining the device, and to inspect and clean the device on a regular basis. Taking this into account will help ensure a proper and reliable operation of the relay socket.

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