The multi-channel segregation with backup battery exports the switching power supply

  
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With the high-speed development of social economy, the human demand for electric energy is larger and larger. Under non-renewable, situations in short day by day of energy such as the fossil energy, etc. , the increasingly many country realizes the power saving and develops the importance of the regenerated energy. So in recent years, new and high t
The multi-channel segregation with backup battery exports the switching power supply - schematic

echnology such as high voltage direct current transmission, solar electrical energy generation get the fast development. And high-new technical development these leave controlled device of high-power that the characteristic promote day by day, such as IGBT. These large power devices are often taller than the large, integrated level in power and costing an arm and a leg, and need suitable his work`s driving circuit. Because big power device these make up, form bridge circuit, work only more often at work, each power device is independent, so its required voltage of driving circuit must be offered by multi-channel isolated direct-current volts, and such multi-channel isolated direct-current volts is exported and generally realized by the switching power supply. The switching power supply is generally supplied power for it by city power, so long as city power is normal, the switching power supply can work, and can export stable and multi-channelly and isolate the direct-current volts. Once city power breaks down, the output voltage of switching power supply will drop, and because the direct-flow mother who connects the HPSD is connecting the electrolytic capacitor greater in capacity in parallel on the line, the output voltage of the switching power supply must lead to the fact the voltage of the driving circuit drops while dropping, therefore will probably cause the power device to shut off and burn immediately at the moment...



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