For LED lamp belt, under what circumstances with constant flow, under what circumstances with constant pressure, what are the principles?
It is advisable to use constant current, because the brightness of the LED lamp is determined by current, and the consistency of the brightness of the LED lamp can be guaranteed under constant flow.
If the constant pressure, at the beginning of the light, the current is not large, LED temperature rise to normal operating temperature, the current will increase rapidly, and quickly exceed the rated current, the life of LED will be greatly shortened. If the starting current is too low, the LED can not exert its high luminous power.
According to the volt - ante of the LED lamp, it is better to use constant current.
For the LED lamp power supply, if it is series circuit based, with constant flow, if it is parallel circuit based, with constant voltage.
