High Frequency Apparatus Page 90

90 go HIGH FREQUENCY APPARATUS SIDE IRONS FITTED IN ONE BY ONE SECONDARY PRIMARY PLAN ELEVATION Fig. 6. The transformer assembled Fig. 7 suggests the mounting for the complete transformer. The case may be of mahogany, oak or whitewood. It is built to fit the transformer and as the windings for different frequencies change the diameter of both primary and secondary, and consequently the length of the complete. transformer, the dimensions are not given in the drawing. The core is gripped between lengths of wood and the latter pieces are secured by means of screws passing through the walls of the case.