Continental me change, diesel generators Transformers (Transformer) using the principle of mutual inductance. The transformer is using the principle of electromagnetic induction means to change the AC voltage, the main member is a primary coil, a secondary coil and a core (magnetic core). The main features are: voltage conversion, the current conversion, impedance transformation, isolation, voltage regulator (magnetic saturation transformers) and so on. Can be divided according to purpose: distribution transformers, power transformers, sealed transformers, modular transformers, dry-type transformers, oil-immersed transformers, single-phase transformers, furnace transformers, rectifier transformers. www.jndlbyq.com/ roll core sealed type distribution transformers, in recent years to develop a new generation of low-noise, low-loss transformer, its core no seams, a large reduction in the load loss and no-load current, the no-load current is reduced from 60% to 80%, high and low voltage coil wound on the core column continuous, winding tight, good concentricity, further strengthened the anti-theft performance of the product. Noise decreased by 10 dB or more. Low temperature 16-20K. Since the core (pure circular cross-section) continuous winding, full use of the silicon orientation, so that no-load loss reduced by 20% to 30%. Transformers in the electrical equipment and radio circuits, the transformer used for lifting voltage, impedance matching, security isolation. In the generator, whether a coil or magnetic field moves through the magnetic field moves through the stationary coil, the induced voltage in the coil can in both cases, the value of the magnetic flux are the same, but there is the number of the magnetic flux intersecting the coil chain change, which is the principle of mutual induction.