Product overview This educational DC motor demonstrator verifies how armature rotation relates to current direction and magnetic field direction, helping users grasp the basic principle of motor rotation. The unit is suitable for classroom demonstrations, handson lab work, and hobbyist experiments. Key benefits Clear demonstration of cause and effect: Shows how current direction and magnetic lines of force determine the steering and rotation of the armature. Handson learning: Simple connections and visible components make it easy to observe motor behavior and experiment with voltage and brush position. Readytouse assembly: Includes the essential mechanical and electrical parts needed for typical DC motor experiments. Safe operation guidance: Explicit warnings and alignment procedures reduce the risk of short circuits during experiments. Main features and components Core parts included: base, rotating shaft, bracket, commutator, armature coil, pulley, pole shoe, permanent magnet, electric brush, and terminal. Power requirements: Operates on a 3 V to 6 V DC supply. Speed increases with applied voltage in the specified range. Manual adjustment: If the armature does not start rotating, it can be nudged manually for initial motion. Brush alignment warning: Check brushes before powering the unit. Avoid having both brushes contact the same commutator segment to prevent a short circuit and to improve conversion rates. Function and performance Function: Demonstrates the interaction between electrical current and magnetic fields that produces torque and rotation in a DC motor. Performance behavior: Motor speed responds proportionally to the supplied voltage within the 3 V to 6 V range. Visible components make it easy to correlate electrical inputs with mechanical output. Compatibility and suitable environments Designed for lowvoltage DC supplies within the specified range. Suitable for educational labs, vocational training workshops, physics classroom demonstrations, and hobby bench setups. Compatible with common bench power supplies and lowvoltage battery packs that provide stable 3 V to 6 V DC. Recommended use scenarios Physics classroom demonstration: Show students how reversing current or the magnetic field changes rotation direction and explain the role of the commutator. Technical training: Use in vocational courses to teach motor construction, commutation, brush alignment, and troubleshooting. Hobbyist experimentation: Test small DC motor concepts, pulley loads, or simple speed control experiments using controlled voltages in the 3 V to 6 V range. Operation tips and precautions Connect a 3 V to 6 V DC source to the two terminals for normal operation. Expect speed to increase with voltage. If the rotor does not start, give it a small manual rotation to overcome static friction. Before powering on, inspect brush positions. Do not allow both brushes to contact the same commutator segment to avoid short circuits and ensure proper commutation. Use appropriate lowvoltage supplies and avoid exceeding the stated voltage range. What this product helps you do Visualize and verify fundamental DC motor principles. Teach and learn motor rotation mechanics, commutation, and the relationship between electrical input and mechanical output. Perform safe, repeatable experiments that link theory to observable behavior. This description reflects the unit composition, operating voltage, and recommended handling to ensure reliable demonstration of DC motor principles.