Completed a mini project on H Bridge motor driver with LED

View profile for Srinaya Balasundar

technical enthusiast | research | development | leadership | artist 👩🎨 | project based learner | alumni relations coordinator |

Hello connectors , I have recently completed a mini project - H Bridge of motor driver , ⚡️ I commenced with breadboard connections , with a basic circuit diagram I made connections and instead of motor I have used LED to check the output .✅ Components used : Led PNP and NPN transistor ( each 2) Resistor (6) 📌Transistors : • Act as electronic switches to control the current path. • Four are arranged in an H-shape to form the H-Bridge. • When certain pairs are switched ON, current flows through the motor in one direction (forward), and when the opposite pair is ON, current flows in the other direction (reverse). 📌Resistors : • Used at the base of each transistor. • They limit the base current going into the transistors, protecting them from damage. • Ensure proper switching (not too much or too little current). 🔹 How They Are Used (Working Principle) This H-Bridge has two control inputs: A and B. 📌• Case 1: A = HIGH, B = LOW • Left-top transistor (Q1) and Right-bottom transistor (Q4) turn ON. • Current flows VCC → Q1 → Motor → Q4 → Ground. • Motor rotates in one direction (say, clockwise). 📌• Case 2: A = LOW, B = HIGH • Right-top transistor (Q2) and Left-bottom transistor (Q3) turn ON. • Current flows VCC → Q2 → Motor → Q3 → Ground. • Motor rotates in the opposite direction (anticlockwise). 📌• Case 3: A = B = LOW • All transistors OFF → Motor stops. 📌• Case 4: A = B = HIGH • Risk of short circuit (both top and bottom of one side conduct) Instead of Motor I have used LED’s, ✅This project helped me to understand deeply about the working of H bridge and the advantages of them . 🎖️ through this project , I strengthened my foundation . #electronics #miniprojects #importanceofHbridge #engineering #electrical

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