1, from the laminated silicon steel plate to identify the silicon steel plate of the E-shaped power transformer is cross-inserted, THE E version of the cross, I do not leave a blank gap, the whole core matching film. Audio input and output transformer E piece and I film a certain difference between the air gap, which is the power and audio transformer for the most intuitive way. This C-shaped transformer, power transformer in general.
2, from the winding leads to the number of terminals identification power transformer common have two windings, a major and minor winding, so there are four terminals. Some power transformers have shields between the primary and secondary windings to prevent humming and other interference. Therefore, the power transformer has at least four terminals.
3, from the shape of the identification of the common power transformer core E and C two. Evan core transformers are E architecture to high quality, D42 D41 silicon steel sheet cores and are widely used. C-shaped iron core transformer uses cold rolled silicon steel strip as the core, small volume, is the core structure.
