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What are the advantages of LED power supply?

Text:[Big][medium][small] time:2018/12/13 10:48:04    Views:    

       LED regulated power supply advantages:

       1. Low power consumption and high efficiency. In the LED power supply circuit, the transistor V is excited by the excitation signal, and it alternately operates in the on-off and off-turn-on LED states, and the conversion speed is fast, and the frequency is generally about 50 kHz, in some technologically advanced countries. It can be done at a few hundred or nearly 1000 kHz. This makes the power consumption of the LED transistor V small, the efficiency of the power supply can be greatly improved, and its efficiency can reach 80%.

       2, small size and light weight. From the block diagram of the LED power supply, it is clear that there is no cumbersome power frequency transformer. Since the dissipation power on the adjustment tube V is greatly reduced, a large heat sink is omitted. For these two reasons, the LED power supply is small in size and light in weight.

       3, the voltage regulation range is wide. The output voltage from the LED power supply is regulated by the duty cycle of the excitation signal, and the change in the input signal voltage can be compensated by frequency modulation or widening. In this way, when the voltage of the power frequency grid changes greatly, it can still ensure a relatively stable output voltage. Therefore, the voltage regulation range of the LED power supply is very wide, and the voltage regulation effect is very good. In addition, methods for changing the duty ratio include pulse width modulation type and frequency modulation type. LED power supply not only has the advantage of wide voltage regulation range, but also has many methods to achieve voltage regulation. Designers can flexibly select various types of LED power supplies according to the requirements of practical applications.


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