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3-1393807-7 Application Field and Working Principle

Signal relays, up to 2 amperage, are an integral component of many electronic systems because they offer precise control over the flow of current. They are used to isolate, amplify, and protect circuits from damaging levels of current. The relays themselves are made up of two parts: the actuating mechanism and the contactors. Together, the two parts work in unison to provide versatile electric control.

Application Field

Signal relays provide a range of solutions for a variety of applications, from simple on-off control of low-level switchgear to sophisticated process control. They can be used in industrial automation equipment, device displays, security/safety systems, and process control systems, among others. Signal relays can control the speed of motor drives, regulate the flow of fuel in pumps and valves, and control lighting systems.

In addition, signal relays can enable control of compressors, actuators, dampers, and other electrically conductive equipment. They are also used in data processing systems, telephone exchanges, and scientific instrumentation.

Working Principle

Signal relays use an actuating mechanism to convert low-level electrical current into an electromechanical action. The actuation process is triggered by an input signal, such as a voltage or current. The actuating mechanism uses the input signal to cause a mechanical armature to move, in turn activating the contacts inside the relay.

The contacts are the important part of a signal relay, as they are used to switch the connections of a circuit. The input signal opens and closes the contacts, which either blocks or allows electrical current to flow. The contacts are made from a variety of materials, such as gold, copper, and silver. The contacts are designed to provide long service life and reliable performance.

By using multiple contacts, signal relays can control more complex operations. These relays are also designed to meet specific shutdown requirements, such as the ability to open and close contacts quickly, hold contacts open for a set time period, or provide feedback signaling.

Conclusion

Signal relays are used to control a wide range of electrical applications. They provide precision control over the flow of current and work by converting low-level electrical signals into electromechanical motion. Signal relays are composed of an actuating mechanism and contactors, which open and close the contacts to provide versatile electric control.

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