Premium Demonstration Dynamo with Hand Driver

This hand-driven demonstration dynamo converts mechanical energy into electrical energy, mounted on an 8" x 5" base plate. A hand-driven pulley with a 125mm diameter is coupled to the smaller dynamo pulley by a rubber belt, providing a step-up ratio that generates visible electrical output from moderate hand cranking. Electrical output is delivered via a pair of 4mm terminal sockets, and a light-emitting diode is included as a simple output indicator to confirm current generation. The model can also be operated in reverse as a motor on a 6–8V DC supply, demonstrating the reversibility of electromagnetic energy conversion.