Physics - Electricity - Inductance Many thanks for checking out our website. Below are a list of our on-line products.   Ruhmkorff Coil KST/EI/1177   E H T Power supply KST/EI/1178   Transformer Demonstration KST/EI/1179 Spectrum Tubes KST/EI/1180   Spectrum Tube KST/EI/1181   Shadow Effect KST/EI/1182 Deflection Tube KST/EI/1183   X-Ray Tube KST/EI/1184   Electrical Radiometer KST/EI/1185