Nightbreeze Hand Crank Generator for Physics & Science Labs – Energy Conversion Teaching Apparatus with LED Bulbs – Classroom Demonstration, School Science Education, Output DC 1-12V

Nightbreeze Hand Crank Generator for Physics & Science Labs – Energy Conversion Teaching Apparatus with LED Bulbs – Classroom Demonstration, School Science Education, Output DC 1-12V

• 【Enhanced DurabilitPurpose-Built for Physics & Science Classrooms】 This hand crank generator is designed for physics experiments, science labs, and school education. It clearly demonstrates mechanical-to-electrical energy conversion, helping students intuitively grasp concepts such as energy transfer, electromagnetism, and basic circuit principles.y and Efficiency: To make this little hand generator more durable and improve its power generation efficiency, we use two ball bearings, and apply lubricating grease.
• 【 Complete, Ready-to-Use Experiment Apparatus】 The kit includes one hand crank generator, three bright LED bulbs, and connection wires – everything needed for an immediate classroom demonstration. No batteries required; simply turn the handle to generate electricity and light up the LEDs, perfect for teacher-led demonstrations hands-on physics demonstrations.
• 【Smooth, Quiet & Effortless Cranking】 Engineered with dual ball bearings and lubricating grease, this generator offers low-resistance, whisper-quiet operation. You can turn the handle easily to achieve high LED brightness, making it suitable for repeated classroom use without causing distraction or fatigue.
• 【Safe, Low-Voltage Teaching Apparatus】 The generator outputs approximately 1-12V DC (no-load) depending on cranking speed. This voltage range is safe for users handling and is ideally suited for low-power circuit experiments, such as illuminating small bulbs and LEDs. Please note: it is a physics teaching tool and is not designed to charge phones, batteries, or power professional equipment.
• 【Expandable Two-Unit Demo (Requires Two Generators)】 For an even more effective physics demonstration, purchase two units and connect their output wires. When you crank the first generator, the second generator’s handle will spin automatically—faster cranking creates faster spinning, and reversing the direction instantly reverses the second handle. This vividly shows how a DC generator and motor are essentially the same device, making abstract concepts like energy conversion and motor reversibility tangible for users. (Watch the video for details)