12-Point Star Coil Pulsed Motor Model | Transparent Acrylic Dodecagram Stark / Bedini Motor Variant | Experimental Physics & STEM Tech Display

🔬 A Solid-State Tribute to Classic Bedini & Dekarama Pulsed Motors

Designed specifically for physics enthusiasts, electrical engineers, and hard-core model collectors, this open-frame pulsed motor model is a fully functional demonstration of solid-state electromagnetic drive principles.

Utilizing an exquisite, hand-wound 12-point star (Dodecagram) winding geometry and a classic Stark/Bedini-type pulsed circuit, this kit offers a raw, uncompromised look at electromagnetic induction and pulse switching without mechanical brushes. It is not just an educational engine—it’s a self-running kinetic art piece designed to captivate anyone who enters your workspace.

⚡ Technical & Design Highlights

• 12-Point Star (Dodecagram) Winding Geometry:

  The copper wire is meticulously routed around 12 precision pillars on a transparent acrylic chassis, creating a stunning, symmetrical Dodecagram geometry. This configuration ensures highly efficient, multi-pole magnetic field interaction while serving as an exceptional piece of geometric wire art on your bench.

• Solid-State Pulsed Drive (Stark/Bedini Variant):

  Fully eliminated mechanical brushes. The custom onboard "STARK" circuit board uses a high-sensitivity Hall-effect sensor to detect the radial magnet rotor's position, triggering nanosecond-precise current pulses through the star winding to keep the rotor spinning endlessly.

• Onboard Diagnostic & Control DIP Switch:

  Take control of your experiment. The integrated red DIP-switch panel and built-in LED diagnostic indicators allow you to interact with the circuit, change pulse timing states, and visually monitor the electrical switching frequency in real-time:

  • Switch 1 (Resistor Tuning): Toggle this switch to adjust the circuit's input resistance (100R / 1k / 2k). Observe how changing resistance levels affects the coil's magnetic force and alters the spin velocity.

  • Switch 2 (1uF Capacitor Filter): Engages a 1uF filter capacitor. Switching this on or off modifies the pulse waveform and storage capacity, letting you study self-induction back-EMF spikes.

  • Switch 3 (LED Diagnostic Toggle): Connects the onboard high-speed LED indicators. When switched on, the LEDs pulse in perfect synchronization with every electromagnetic discharge, creating a brilliant visual readout of the rotation frequency.

• Tactile Manual Trigger Button:

  Serves as a tactile manual trigger. Give your motor an instant magnetic kickstart or run diagnostic pulse tests with a single press of the black button when the rotor is at a standstill.

• Premium Mechanics & USB-C Power:

  Equipped with high-precision RC-grade miniature ball bearings and a heavy-duty, balanced radial magnet rotor to ensure minimum friction losses and whisper-quiet operation. Powered via a standard USB Type-C port (5V 2A), drawing a rated 9W. No custom wall adapters required—perfectly compatible with standard bench power supplies, laptops, or power banks.

🔬 How It Works

1. Magnetic Position Sensing:

   When the heavy radial magnet rotor spins, its magnetic poles sweep across the high-sensitivity Hall-effect sensor located right beneath it.

2. Solid-State Switching & Pulse Injection:

   Once the sensor detects the magnet, it triggers the custom Stark/Bedini variant solid-state circuit. The board instantly injects a microsecond current pulse from the 5V USB-C power source into the 12-point Dodecagram star coil.

3. Electromagnetic Repulsion & Continuous Spin:

   The current pulse generates a momentary electromagnetic field within the star coil. This temporary field repels the rotor’s permanent magnet, providing a powerful tangential push. Driven by this magnetic kick and rotational inertia, the rotor enters the next sensing cycle, achieving continuous, frictionless motion.

4. Back-EMF Discharge & LED Diagnostics:

   When the pulse cuts off, the magnetic field collapses, creating a high-voltage Back-EMF (Electromotive Force) spike. By toggling DIP Switch 3, this discharged energy is routed to the onboard LEDs, causing them to flash in perfect sync with the electromagnetic pulses—making energy conversion fully visible to the naked eye.

⚙️ Technical Specifications:

• Drive Circuit Type: Stark / Bedini Pulsed Motor Variant (Hall-Effect Sensor Triggered)

• Coil Configuration: Hand-wound 12-Point Star (Dodecagram) Coil

• Power Input: 5V / 2A (Type-C USB)

• Rated Power: 9W

• Chassis Material: CNC-Cut High-Transparency Acrylic & Brass Standoffs

• Rotor: High-Flux Radial Magnet

• Product Weight: 300g (Net) / 600g (Package Included)

• Product Dimensions: 17 x 14 x 5 cm

• Package Dimensions: 53 x 23 x 29 cm

• Packaging: Securely Boxed

• Target Audience: Age 16+ (For Engineers, Physics Researchers, Maker Communities, and Tech Collectors)