Two main categories of switching power supplies
Stainless steel electric heating tube classification switching power supply main
People in the field of switching power supply technology is the side of the development of related power electronic devices, the side of the development of switching inverter technology, the two promote each other to promote the switching power supply each year to more than double-digit growth rate toward the light, small, thin, low noise, high reliability, anti-interference direction of development. Switching power supply can be divided into two categories: AC/DC and DC/DC.
Miniature low power switching power supply
Switching power supply is moving towards mass and miniaturisation. Switching power supply will gradually replace the transformer in the life of all applications, low-power miniature switching power supply applications to be first embodied in the digital display meter, smart meters, mobile phone chargers and so on. At this stage, the country is vigorously promoting the construction of smart grid, the requirements of the power meter greatly increased, switching power supply will gradually replace the transformer in the power meter above the application.
Inverting series switching power supply
Inverting series switching power supply and general series switching power supply is the difference between this inverting series switching power supply output voltage is negative voltage, just with the general series switching power supply output of positive voltage polarity reversal; and due to the energy storage inductance L only in the switch K switching off when the output current to the load, therefore, under the same conditions, the inverting series switching power supply output current than the series switching power supply output current is twice as small. The current is twice as small as that of the series switching power supply under the same conditions.
