When configuring the dimming power supply, many customers do not know the power supply have constant current dimming power supply and constant voltage dimming power supply, then what is constant current.

There are two types of control equipment inside the constant current led power supply. One is used for voltage stabilization, when the power changes, it can keep the transmitted voltage relatively stable, but there is a prerequisite for the matter, the current must be smaller than the set constant current value. When the power supply is under constant voltage mode, the part that controls the constant current is in the dormant state, and it will not interfere with the output voltage and output current.

When the load resistance starts to decrease , the constant current unit does not start to work until the load current has increased to the previously preset constant current value range, and it is mainly responsible for maintaining the output current to continue to remain unchanged at the predetermined

In order to achieve this goal, the voltage decreases as the resistance becomes smaller. In rare cases, the load resistance value will become zero. Of course, this will only happen in the case of a short circuit. At the same time, the output voltage will also become zero. This method achieves the purpose of keeping the output current constant.

For more questions for constant current dimming power supply, please send your inquiry to steven@smartselectronic.com.cn.