Simple demonstration of operation of the electrical transformer and electromagnet

Material for possible replica: Electromagnet coil; plastic body, 100x35, hole 13 mm. Soft iron pipe, diameter 110x12 mm. Winding revolutions, 600-650. Wire diameter mm. For the correct functioning of the electromagnet oscillation, a power of 700W, 220V is required, connected in series to the electromagnet. Primary Transformer wire, diameter mm. winding turns, 450-500. Secondary wire diameter mm. winding rounds, 120-130. Bulb 24V 25W.