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Two Channel RELAY BOARD with ULN2003 Driver IC

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Two Channel RELAY BOARD with ULN2003 Driver IC
Description A relay is an electromechanical switch which is activated by an electric current. A two relay board arrangement contains driver circuit, power supply circuit and isolation circuit. A relay is assembled with that circuit. The driver circuit contains transistors for switching operations. The transistor is use for switching the relay. An isolation circuit prevents reverse voltage from the relay which protects the controller and transistor from damage. The input pulse for switching the transistor is given from the microcontroller unit. It is used for switching of a two devices. FEATURES • Input voltage: 12VDC • Driver unit: ULN2003A • Isolation unit: In4007 • Fast switching • Motor forward and reverse operation APPLICATIONS • Ac load Switching applications • Dc load Switching applications • Robotic applications
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