Classic electrostatics demonstrations with dramatic sparks The Winsco Van de Graaff Generator brings the excitement of electrostatics to life through striking demonstrations of charge, potential difference, and electric fields. With its durable construction, smooth operation, and consistent performance, this classroom staple provides a safe, hands-on way to explore the fascinating world of static electricity. The Winsco Van de Graaff lets students see and feel electric forces in action — from hair-raising charge buildup to crackling sparks that make electricity unforgettable. Why Teachers Love the Winsco Van de Graaff Generator Balance of Engagement and Safety: The generator produces sparks from 8 inches to as high as 12–15 inches. Yet with a maximum continuous current of just 10 microamps, it allows students to explore electricity up close without risk. Built to Last: Rugged metal dome and stable base ensure long-term durability and easy maintenance. Highly Versatile: Supports a wide range of electrostatic demonstrations — from charging conductors to operating accessories like the electric whirl or electroscope.