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Power Relays, Over 2 Amps: LY4N-DC12 Application Field and Working Principle

The LY4N-DC12 is a reliable, high performance, low-power AC/DC solid state power relay from ONE-YEAR manufacturer. It is designed for applications up to 2 A, using an improved design technique that provides a low power consumption but with high performance.

The LY4N-DC12 is a very versatile power relay and suitable for applications in many different markets. It can be used in data-processing systems, telecommunications systems, automated test equipment, medical equipment, industrial process control, and security systems.

LY4N-DC12 Features

• 2 A continuous current rating
• Small physical size
• Low power consumption: Only 0.7W
• High control speed: 1 ms
• Good insulation: 110 MΩ@500V
• Low input current: 6mA
• High reliability: 100K cycles
• Stable performance between -40℃~+85℃

LY4N-DC12 Working Principle

The LY4N-DC12 consists of the four main components: Control module, Power module, Sensor module and Switch Module.

Control Module

The Control Module is a small circuit board mounted on the backside of the relay. It includes the main logic to control the power relay. It has an integrated circuit which controls the power supply line, and its output sends signal to the Power Module.

Power Module

The Power Module is the part of the relay responsible for power switching. It is a discrete design consisting of two components: a MOSFET and a control transistor. The MOSFET is a field-effect transistor used for load switching, while the control transistor receives signals from the Control Module and control the switching operation.

Sensor Module

The Sensor Module contains the temperature and current sensors which help to regulate the power switching and protect the relay from over-temperature. The sensors are connected to the control transistor and provide feedback signals which can alter the switching operation if the temperature or current get too high.

Switch Module

The Switch Module is responsible for the physical connection between the relay and the load. It is a simple single-pole, double-throw switch which is connected to the control transistor. Upon receiving a signal from the Control Module, the control transistor activates the switch, and the connected load is turned on or off.

The LY4N-DC12 is a reliable, high performance and efficient AC/DC power relay, suitable for applications up to 2 A. It is easy to install and maintain, with low power consumption and fast control speed, making it an ideal solution for many designs and applications.

Conclusion

The LY4N-DC12 is a highly reliable, low-power AC/DC solid state power relay with a continuous current rating of 2 A, small physical size, high control speed and extremely low power consumption. It is suitable for a wide range of applications due to its excellent performance, reliability and ease of installation and maintenance. All in all, the LY4N-DC12 provides an ideal solution for many applications up to 2 A.

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