The development of LED lighting has entered a new stage. The modern lighting star LED bulb drive power supply has the following requirements:
(1) high efficiency and less fever
Because the power is usually built with LED lamp beads together, a power supply and LED chip heat will be added together, when the heat generation and loss of balance, finally decided to work together and the temperature of LED bulb, LED chip temperature determines the service life of the bulb LED;
(2) long service life
According to the barrel theory, the shortest plank determines how much water the wooden bucket can hold, and the power is the shortest wooden board to decide the service life of the LED bulb, so the power is the key factor to decide the quality of the LED bulb.
(3) the amplitude of current pulsation is small
The small amplitude of current pulsation not only improves the quality of lighting, but also prolongs the life of the components, thus prolonging the service life of LED bulbs.
(4) high frequency pulsation frequency
High frequency current ripple will not let the human eyes light flicker, certainly LED lighting should not have a ripple current.
(5) high power factor
Improving power factor in LED driving power can improve the power utilization efficiency of power grid equipment, reduce invalid loss of power grid, and improve the utilization efficiency of power network.
(6) electrical isolation
The LED drive power supply is supplied by the high voltage AC power grid. But LED works at a low safety voltage. It needs electrical isolation between the two to comply with safety regulations, so as to avoid electric shock accidents.
(7) protection function
Generally there should be over temperature, over current and open circuit protection to meet the safety regulations, and to avoid electric shock accidents with multiple protection.
(8) small volume
Because the general LED bulb power supply is one in one built-in power supply, only small size is well installed.
(9) low cost
Low cost and low price will have good market performance. This is the general rule of the Chinese market. It is difficult to change in the short term. The LED lamp company must adapt.