Silicon steel C-core and clip with a range of coils for use as inductors and transformers. The approximate inductance values, with and without a complete C-core, are shown in the table below. Current ratings are based on 150A per square cm. The coils will run hot, but will not be damaged by short-term currents of up to twice the stated value. No. of Turns: 1200 + 1200. Air-core: 145mH. Wire: 0.315mm. Max Current: 0.12A. Alternative Transformer Coils are also available to purchase separately:. B8H26448 - 5000 + 250 Turns. B8H26459 - 500 + 125 Turns. B8H26436 - 60 + 60 Turns. B8H26473 - 120 + 120 Turns.