In the technical field of switching power supply, people develop relevant power electronic devices while developing switching frequency conversion technology, the mutual promotion of the two promotes the development of switching power supply towards light, small, thin, low noise, high reliability and anti-interference with a growth rate of more than two digits every year.
Switching power supplies can be divided into AC/DC and DC/DC categories.
Miniature low-power switching power supply, switching power supply is moving towards popularization and miniaturization.
Switching Power Supply will gradually replace all applications of transformers in life. The application of low-power micro-switching power supply should be first reflected in digital display meters, smart meters, mobile phone chargers, etc.
At this stage, the country is vigorously promoting the construction of smart grid, and the requirements for watt-hour meters are greatly increased. Switching power supply will gradually replace the application of transformers in watt-hour meters.
The difference between the reverse type series switching power supply and the general series switching power supply is that the output voltage of this reverse type series switching power supply is negative voltage, it is just opposite to the positive voltage polarity output by general series switching power supply;
And because the energy storage inductor L only outputs current to the load when the switch K is turned off, under the same conditions, the current output by the inverted series switching power supply is twice as small as the current output by the series switching power supply.
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