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What is rail switching power supply? what's the effect?

source:power supply     Popular:adapter     release time:2021-07-24 13:55:51     Article author:sznbone    

  One is a linear power supply, and the other is a guide rail switching power supply that people often say. There is a 35mm guide rail lock on the shell design, which can be instantly snapped into the cabinet like AC contactors, automotive relays, and wiring terminals. On the 35mm guide rail, disassembly, assembly, and replacement are very time-saving and labor-saving.

What is rail switching power supply? whats the effect?(图1)

  Contemporary automation equipment has strict requirements for shutting down common failures. Generally, minutes are used to evaluate the operation rate of machinery and equipment. The time-saving and labor-saving characteristics of rail switching power supplies are undoubtedly more suitable for the rapid maintenance of automation equipment. So what is the rail switching power supply? What is its function?

  In a linear power supply, let the output power transistor work in a linear mode. Unlike the linear power supply, the rail switching power supply allows the output power transistor to work on and off. In the two cases, add The volt-ampere multiplication on the output power transistor is not large (when it is switched on and off, the voltage is low, and the current is large; when it is off, the voltage is high, and the current is small) / the photocurrent multiplication on the power electronic device is the output The loss caused by power integrated circuit technology.

  Compared with the linear power supply, the rail switching power supply chops the keyed direct current voltage into a single pulse voltage whose amplitude is equivalent to the keyed voltage amplitude to maintain. The duty cycle of the single pulse is adjusted by the control panel of the switching power supply. Once the key-in voltage is chopped into a communication AC square wave, its amplitude can be increased or decreased according to the transformer. Several sets of output voltage can be increased according to the number of secondary windings of the boosting transformer. In the end, this communication AC waveform is filtered by a transformer to obtain a DC output voltage.

  Guide rail switching power supply is mostly used in automation equipment as a switching power supply for PLC, on-site large digital quantities and instrument panels. Its appearance design structure is divided into two types: one is a general switching power supply, which must be fixed with screws during installation, and relative disassembly, assembly, and replacement is not very convenient. The other is the rail switching power supply that people often say. The design has a 35mm rail lock on the shell, which can be immediately snapped on the 35mm rail in the cabinet like AC contactors, automotive relays, and terminal blocks, and disassembled. Dismantling is very time-saving and labor-saving. Contemporary automation equipment has strict regulations for shutting down common failures. Generally, minutes are used to evaluate the operation rate of machinery and equipment. The time-saving and labor-saving characteristics of rail switching power supplies are undoubtedly more suitable for the rapid maintenance of automation equipment.


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