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SINGLE RELAY BOARD BC547 Transistor Based

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SINGLE RELAY BOARD BC547 Transistor Based
A relay is an electromechanical switch which is activated by an electric current. A single 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 used 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 single device. FEATURES • Input voltage: 12VDC • Isolation unit: IN4007 • Fast switching APPLICATIONS • Ac load Switching applications • Dc load Switching applications • Motor switching applications
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