摘要
讨论了小功率LED的驱动方案,设计了实用的电容降压式LED景观照明灯驱动电路,着重分析了关键元件参数的计算和选取。制作了实物电路,用作1.4 WLED地埋灯驱动电源。经试验验证,该电路稳定可靠、成本低,可通过改变降压电容值和选择适当的高压稳压管对多种小功率LED产品驱动。
The driving scheme of small power LED was discussed, the driving circuit for LED landscape lamp which could reduce voltage by capacitance, was designed. The calculation and selection of parameters for key components were also introduced in detail. The designed circuit was used as the power supply for LED 1.4 W underground light. The experiment proved that this circuit was steady, low cost and reliable. It could drive the variable small power LED product through varying voltage-reduced capacitance and changing high voltage regulator tube.
出处
《低压电器》
北大核心
2009年第10期28-31,共4页
Low Voltage Apparatus
关键词
照明控制
LED
景观照明灯
驱动电路
节能
illumination control
LED
landscape lamp
driving circuit
energy saving
