Bedini SSG Motor/Energizer

### Overview of the Bedini Monopole System The Bedini Simplified School Girl (SSG) is a patented monopole pulse-motor/energizer design. Its primary purpose is not to drive a mechanical load, but to capture high-voltage "radiant energy" pulses that occur when the magnetic field in the coil collapses. These spikes are routed through a diode to charge a secondary battery. ### Core Operating Circuitry * **Bifilar Winding**: The coil is wound with two parallel strands of copper wire. The **power winding** repels the rotor magnet when the transistor turns on. The **trigger winding** is connected to the transistor base and senses the approaching rotor magnet to switch the transistor on. * **Transistor Switching**: An NPN power transistor (MJL21194 or 2N3055) acts as the high-speed switch. When a magnet passes the coil, base current is induced, closing the collector-emitter path and driving current through the power coil. * **Back-EMF Capture**: A fast recovery diode (1N4007) is connected from the collector to the positive terminal of the charging battery. When the magnet passes and the transistor cuts off, the collapsing field generates a high-voltage spike (often exceeding 300V) which is fed to the charging battery. * **Transistor Protection**: A neon bulb (NE-2) is placed across the collector-emitter junction. If the charging battery is disconnected, the high-voltage spike will discharge through the neon bulb rather than destroying the transistor. ### Tuning and Calibration Parameters * **Air Gap**: Maintain a 3mm to 5mm gap between the coil core and the rotor magnets. * **Base Resistor**: Use a 470Ω fixed resistor in series with a 1kΩ potentiometer to dial in the trigger point. Turn the potentiometer until the rotor runs with a clean, high-pitched singing noise.