Back EMF Explained with DC Motors – Why Current Drops When Motors Spin and Increases When it Stops скачать в хорошем качестве

Back EMF Explained with DC Motors – Why Current Drops When Motors Spin and Increases When it Stops

In this video, we demonstrate how back electromotive force (back EMF) affects current draw in brushed DC motors. Using four identical motors with different fan loads, we calculate expected current based on motor resistance, then measure real-time current draw in operation. Watch what happens when we stop one motor and see current spike—revealing how back EMF opposes supply voltage and limits current as the motor spins. 📏 Key Concepts Covered: Measuring motor resistance Calculating expected current (Ohm’s Law) Observing real vs. expected current Demonstrating how back EMF affects current flow 🔬 In a follow-up video, we'll use an oscilloscope to visualize back EMF and dive deeper into this important electrical concept. Want to learn more about electrical concepts like these? 🔧 https://www.sbctrainingllc.com 📚 https://www.weber.edu/DOCE/electrical... #BrushlessMotor #DCMotor #RegenerativeBraking #ElectricalTraining #STEM #automotiveeducation #BackEMF