People in the field of led display power supply technology are developing related power electronic devices and switching frequency conversion technology. The two promote each other to promote the 180w led power supply to light, small, thin, low noise, high reliability, and anti-interference with a growth rate of more than two digits every year. Direction development. low voltage lighting power supply can be divided into two categories: AC/DC and DC/DC.

1)Miniature low power new power supply
Switching power supplies are becoming popular and miniaturized. led power supply 220vwill gradually replace all applications of transformers in life. The application of low-power micro-switching power supplies must first be reflected in digital display meters, smart meters, mobile phone chargers, etc. At this stage, the country is vigorously promoting the construction of smart grids, and the requirements for electric energy meters are greatly increased. Switching power supplies will gradually replace the application of transformers in electric energy meters.

2)Reversing series smps led power supply
The difference between the reversing series smps led power supply and the general series switching power supply is that the output voltage of this reversing series switching power supply is negative voltage, which is just opposite to the positive voltage output of the general series led power supply ac; and because of energy storage The inductor L only outputs current to the load when the switch K is turned off. Therefore, under the same conditions, the output current of the reversing series switching power supply is twice as small as the output current of the series led power supply 220v