The function of the power transformer is a power transfer, voltage conversion and the insulating spacer, and as a major soft magnetic electromagnetic member in the power supply technology and power electronics technology, is widely applied. Based on the size of the transmission power, power transformers can be divided into several files for high-power: 10kVA, 10kVA ~ 0.5kVA in power, 0.5kVA ~ 25VA small power 25VA or less for micro-power. Transmit power, the power transformer design are not the same, it should be self-evident. Under its main function is to power transmission, make the translation of the English name "power transformers" into "power transformer", still in use in a number of literature data. What is called "mains transformer", or called "power transformer”? It needs to be science and technology terminology authority to choose and decide.
Power Mains Transformer Principle
To be used in almost all electronic products, it is simple in principle, but according to different occasions (uses) transformer winding process will vary depending on the requirements.mains isolation transformer features have: voltage conversion; impedance transformation; isolation; the regulator the (magnetic saturation transformer), etc., used transformer core shapes generally have the E-type and C-type core. The most basic type of transformer is including two sets of wound wire of the coil, and each other inductively that aggregate together. Coupling and the magnetic cross-stream wherein one set of coils when an alternating current (having a known frequency), is induced in another group of the coil will have the same frequency of the AC voltage, and the induction magnitude of the voltage depends on the two coils the extent of the chain.
Characteristics of the Mains Transformer
In some transformers, coil and core between the two are closely combined with, and its primary and secondary voltage ratio is almost the same with both the number of turns. Therefore, the turns ratio of the transformer, general reference index as a step-up or step-down transformer. Because of the step-up and step-down feature, the transformer has become an important adjunct of one of the modern power system, and enhance the transmission voltage is more economical to make long-distance transmission of electricity, the step-down transformer, it makes electricity use has become more diversified, I says, where there is no transformer, you cannot reach the current status of the development of modern industrial real. There is no clear dividing line between electronic transformers in addition to the smaller size, and the power transformers and electronic transformers, and. The 60Hz power networks generally provide the power are very large, it may be covered by half as big capacity.
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