LH1520AB

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Solid state relays are advanced electric control devices. They can replace traditional electromechanical relays and have the following advantages: high control accuracy, wide control range, fast switching speed, and convenient use. The LH1520AB is a module with ultra-small size and low level control circuit. Using the latest high power MOS tube and photoelectric coupling technology, it has high quality and stable performance.

The major application field of the LH1520AB is in two-wire PLC control. Its minimum control power supply voltage is DC4.5V, and its load voltage range can reach AC100-500V and DC100-400V; its load is between 5A and 20A. Because of its small size and low level control circuit, it is easy to use and can be used as a single control in various PLC systems. In addition, its wide control range makes it perfect for use in electrical and electronic circuits and for a variety of load switchings.

The working principle of the LH1520AB can be broken down into three parts. First, it uses a low level control circuit. This circuit is connected to the power supply to provide the necessary electricity. Then, the signal from the low voltage is fed to the MOS tube. When the control voltage signal meets the set conditions, the MOS tube will be turned on and the large current will be allowed to flow. Finally, the large current will be conducted to trigger the photoelectric coupling module that connects the load. When the photoelectric coupling module is energized, the load will be connected, thus completing the connection.

In conclusion, the LH1520AB module is an advanced solid state relay with wide application fields. It has high quality and stable performance, and its size is ultra-small. It has a low level control circuit, which is connected to the power supply to give it operating power. The MOS tube and photoelectric coupling technology are used to control the power that will be connected to the load. With all these features, it provides a perfect solution for two-wire PLC control.

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