For LED lights to achieve dimming, its power supply must be able to analyze the variable phase angle output of the triac controller in order to unidirectionally adjust the constant current flowing to the LED.
It is very difficult to do this while maintaining the dimmer working properly, which often results in poor performance. The problem can be manifested as slow startup speed, flickering, uneven lighting, or flickering when adjusting the brightness.
In addition, there are problems such as inconsistencies between components and unwanted audio noise from LED lights. These negative situations are usually caused by factors such as false triggering or premature turn-off of the thyristor and improper LED current control. The root cause of the false trigger is the current oscillation when the thyristor is turned on.
There are many other issues that pose challenges when designing 0-10v LED lighting power supplies. ENERGY STAR solid-state lighting specifications require that the minimum power factor for commercial and industrial applications must reach 0.9, lighting products must meet stringent requirements for efficiency, output current tolerance, and EMI, and the power supply must also be made when the LED load is short-circuited or open-circuited Safety ring
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