Constant current:

The output current of the constant current drive circuit is constant, outdoor power supply    ，but the output DC voltage will vary within a certain range with the load resistance.

The smaller the load resistance value, the lower the output voltage, and the larger the load resistance value, the higher the output voltage; the constant current drive circuit is very suitable for driving LEDs, but the price is relatively high.

Supervision:

When the parameters in the voltage regulator circuit are determined, the output voltage is fixed, but the output current will change with the increase or decrease of the load;

The voltage stabilizing circuit is not afraid of the open circuit of the load, but it is strictly forbidden to short-circuit the load completely. Brightness is affected by changes in rectified voltage.

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The characteristics of LED power supply are as follows: