Zhong Xin Tech-Zhong Xin Tech

< p > < a href = "https://baike.so.com/doc/5327972-5563144.html" "> < / a > transformer by using the principle of electromagnetic induction to change the ac voltage of the device, main component is the primary coil, secondary coil and core (core). In electrical equipment and wireless circuit, it is commonly used for lifting voltage, matching impedance, safety isolation and so on. The main functions of the transformer are: voltage conversion; Current conversion, impedance conversion; Isolation; Voltage regulator (magnetic saturation transformer); Autotransformer; High voltage transformers (dry and oil immersed), etc. Common core shapes for transformers are E, C, XED, ED, CD. Single-phase transformer is the primary winding and secondary winding are single-phase winding transformer. Unipolar switching power supply, refers to the output is unipolar, that is, only positive, negative output, compared to the bipolar switching power supply, bipolar switching power supply has three outputs, divided into positive power supply, negative power supply, ground. Single-phase transformer has the advantages of simple structure, small volume, low loss, mainly iron loss, and is suitable for application and popularization in low-voltage distribution network with small load density. Suzhou city has used more than 1,000 units, saving 45GWh of electricity, and the experience is worth promoting. Some according to single-phase transformer is widely used in developed countries, the United States, Japan, for example, single-phase power supply is made for the residents is the main power supply, under the propaganda, some people therefore think of single-phase power supply has a "" drop" "magic, think more energy-saving than three-phase transformer, single-phase transformer think than single-phase power supply system three-phase power supply system is superior. In fact, single-phase transformer and single-phase power supply system is only a supplement to the current three-phase power supply system. Due to the constraints of its own characteristics, it can only be applied to some specific fields.