A large scale transformer, ideal for classroom. The coils are fitted with intermediary outputs providing many transformation ratios. Consisting of :One magnetic circuits made up of highly permeable U shaped metal sheeting which can be closed via two clamps with tightening screws. Section : 40x40mm. Length : 150mm. Height : 170mmOne coil of 6000 turns, 350ohms, 1max : 0.2A, Intermediary 2000 turns output. One coil of 600 turns, 1max : 2.5A, mainly used to create the transformer primary. Provided with power supply cable. One coil of 1200 turns, 12.5ohms, 1max : 1.25A, fitted with intermediary 400 and 800 turns output. One coil of 72- turns, 1max : 12Ahas Intermediary 6, 30, 54 and 66 turns output.