LDE street light power supply everyone listens a lot, for this name and products are more familiar, then LED street light constant current power supply? What is the principle of LED street light constant current power supply? What is the difference between the principle of LED street lamp constant current power supply and the principle of ordinary power supply? Today, Fuguang LED street lamp power supply manufacturers will analyze for everyone:


Constant current can also be called steady flow, meaning similar, generally can be no difference. Compared with the concept of constant voltage, the concept of constant current is difficult to understand, because constant voltage sources are common in daily life, batteries and dry batteries are DC constant voltage power supplies, while 220V AC power can be considered as an exchange. Constant voltage power supplies, because their output voltage is basically constant, does not vary greatly with the magnitude of the output current.

Whether it is a constant voltage power supply or a constant current power supply, they are essentially the same. Their output is voltage and current. In both quantities, the power supply can only control one of them, or stabilize the voltage or stabilize. Current.

The other quantity must be determined by the load resistance, and the load resistance is determined by the user. Therefore, one of the two outputs of the power supply must be determined by the user, which is logical and ohmic. The law can be used by the user. It does not matter whether the output voltage can be given and the output current can be given at the same time.

The LED constant current power supply is a power supply device that can supply a constant current to the load. It can keep the output current constant while the fluctuation of the external power supply and the impedance characteristics change. The constant current source circuit has the characteristics of constant output current, good temperature stability, small DC resistance, but large equivalent AC output resistance.

The constant current range is approximately 1 μA to 20 A. It can provide bias current for various amplifying circuits to stabilize its static operating point and as its active load to increase the amplification factor. And it has also been widely used in differential amplifier circuits and pulse generation circuits.

Now everyone knows the difference between the principle of LED street lamp constant current power supply and the principle of ordinary power supply! It can also be seen from these contents that the LED street lamp constant current power supply is still very different from the ordinary power supply, and the LED street lamp constant current power supply is also more advantageous. If you have LED road power related requirements, please contact Zhongfu Optoelectronics.