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YouTubeElectronics Education
Opto isolated Motor drive application
Optocoupler-based motor driver circuit: The input 5V logic signal controls the optocoupler (PC817), providing electrical isolation between input and output. The optocoupler drives a 2N3904 transistor, which switches the 12V motor load. The diode (1N4148) protects against back EMF from the motor.
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