Features transformer principle
Transformer product features include: voltage conversion; current transformation, impedance transformation; isolation; regulator (magnetic saturation transformer); autotransformer; high voltage transformer (dry and oil-immersed), etc., commonly used transformer core shapes are generally E-type and C-type core, XED type, ED type CD type. Transformers can be divided according to purpose: distribution transformers, power transformers, sealed transformers, modular transformers, dry-type transformers, single-phase transformers, furnace transformers, rectifier transformers, reactors, interference transformers, lightning transformers, box-type variable electrical test transformer transformer high current transformers corner excitation transformer.
The most basic type of transformer, including two sets of the coil wire is wound, and close to each other along said inductively. When an alternating current (having a known frequency) flow in the one set of coils, the coils in the other group having an AC voltage is induced at the same frequency, depending on the magnitude of the voltage induced in the two coils and the magnetic cross-coupling the extent of the chain. Generally refers to the coil connected to AC power is called the "primary coil" (Primary coil); ". Primary voltage" and the voltage across this coil is called. Induced voltage in the secondary coil may be greater or less than the primary voltage is determined by the primary coil and the secondary coil of the "turns ratio" of the decision. Therefore, the step-up transformer is divided into two zones with the step-down transformer.
Most of the transformer manufacturers have a fixed core, around which a secondary coil. Magnetic iron-based high-conductivity material, most of the magnetic flux confined to the core, therefore, to take two sets of coils can get a very high degree of magnetic coupling. In some transformer, between the coil and the core of both closely, its ratio of primary and secondary voltage is almost identical between the two coil turns ratio. Therefore, the transformer turns ratio, and can be used as a transformer boost or buck the reference index. Because of this boost and buck the features that make the transformer has become one of the important adjunct of modern power systems, improve the long-distance transmission of electricity transmission voltage makes more economical, as the step-down transformer, which makes electricity use has become more diversified, you can so that no transformers, modern industry can not achieve real status of the current development.
In addition to the smaller volume of electronic transformer outside, between the two power transformers and electronic transformers, and there is no clear dividing line. Generally provide 50Hz power supply of the network are very large, it may be covered by half a continent region is so large capacity. Power-limiting electronic device, is usually limited by the rectification, amplification, and the ability of the system's other components, some of which in part, by the power amplification, but as compared with the power generation capacity of the power system, it still belongs to the range of small power.
Isolation transformers are commonly used in various electronic equipment to the transformer on the grounds that: provide various voltage classes to ensure normal system operation; provide different operating systems to be part of potential electrical isolation; high impedance to AC current, but provides low DC impedance; at different potentials, maintenance or modification of the waveform of the frequency response. "Impedance" of which one of the important concepts of electronic learning characteristics i.e., it is preset to an apparatus, i.e., when the impedance of the circuit assembly system changes from one class to another class A, if used during an apparatus - transformer.
Transformers have to do the test and its use, is the test transformer, respectively, can be divided into inflatable, oil-immersed, dry-type transformers and other tests, are power plants, power supply bureau and research institutions and other users to make AC voltage basic test equipment testing by the State Bureau of Quality Supervision standards for dielectric strength test on a variety of electrical products, electrical components, insulation materials, etc. under the provisions of the voltage transformer --- using electromagnetic induction principle, from a circuit an electrical power transmission or a transmission signal to another circuit or the transmission power is an important element as a signal transmission
Dongguan Hui the core technology of automatic assembly machines meet the high-frequency transformer EE type core assembly plastic bag, its workflow: the skeleton on the core material feeding → → → under the core material encapsulated assembly → → cutting, assembling the core package of plastic effects are in line with national standards, welcomed the major transformer manufacturers to consult.