The transformer should first distinguish its primary primary stage. For example, 25 pH meter, power transformer in its 220V is primary, and then the filament is the secondary rectifier tube plate.

A transformer is a magnetic induction element, which has an influence on the surrounding inductors. Therefore, in the installation of transformers, attention must be paid to the mutual position between transformers and the influence of the transformer on the trapped components. Necessary shielding measures are sometimes necessary. In the circuit, the power transformer heating phenomenon, but also take into account the location to be conducive to heat dissipation.

Transformer coil to produce a inductive action through the changing of the current, so if the primary transformer connected to the appropriate flow power supply, there is no induction, the secondary there is no induction voltage. Coil to DC is a low resistance circuit, if the power transformer connected to the DC power supply, will be high fever and Rao bad, this must pay attention to.