Description

SEE A BRUSHED DC MOTOR WORKING IN THE OPEN

This compact, assembled open-frame DC motor demonstration model exposes the parts normally hidden inside a motor. Its copper-wound armature rotates between permanent magnets while visible commutator contacts switch current through the rotor. A three-blade propeller makes electrical-to-mechanical energy conversion easy to observe.

IDEAL FOR

• Electromagnetism and brushed-motor demonstrations
• STEM, physics and introductory electronics lessons
• Low-voltage bench experiments
• Observing armature, magnet, commutator and shaft interaction

VISIBLE COMPONENTS

• Three-section copper-wound armature
• Permanent-magnet field structure
• Exposed shaft and commutator contacts
• Red and black connection terminals
• Three-blade demonstration propeller
• Bright green compact display base

SPECIFICATIONS

• Product type: assembled physical DC motor demonstration model
• Product weight: 4 oz (113 g)
• Power input: regulated, current-limited low-voltage DC only
• Heat observation: the unit begins heating at approximately 1 amp; 1 amp is a heat-warning threshold, not a safe maximum or continuous-duty rating
• Included: one assembled motor demonstration model
• Not included: power supply, test leads or batteries

IMPORTANT SAFETY INFORMATION

Begin at the lowest practical voltage and current settings and increase only enough to produce rotation. Disconnect immediately if the windings or contacts become warm, the rotor stalls, or unusual odor, smoke or excessive sparking occurs. Never connect this model to household AC or mains power. Keep fingers, hair, loose clothing, tools and small objects away from the exposed propeller, shaft and magnetic gap. Disconnect power before touching or adjusting the model. Eye protection and adult supervision are recommended. This educational model is not a toy.

This experimental teaching device is not represented as a free-energy, over-unity, medical or guaranteed-performance product.