Led节能灯

Abstract

本实用新型涉及一种LED节能灯,包括LED灯组及其电路装置,所述电路装置含有整流电路和滤波电路,整流电路由整流堆VD1-VD4构成,整流堆VD1-VD4的直流输出端连接LED灯组,在LED灯组的两端,并联连接一个滤波电容C3,在整流堆VD1-VD4的一个交流输入端,串联连接一个双向晶闸管VT,在双向晶闸管VT的两端并联连接一个电阻电容移相电路,在电阻和电容的串联连接点与晶闸管VT的触发极之间,连接一个双向二极管VD。电路中使用了移相电路的移相电压来控制晶闸管的导通,从而调节整流堆的交流输入电压,交流电压经过整流滤波后直接连接到LED灯组,电路中不含分压电阻,不含变压器,具有节能降耗、电路简单、成本低等优点。
The utility model relates to an LED energy-saving lamp comprising an LED lamp group and a circuit device thereof, wherein the circuit device consists of a rectification circuit and a filter circuit; the rectification circuit is formed by rectifier stacks VD1-VD4, the direct-current output ends of which are connected with the LED lamp group; two ends of the LED lamp group are connected with a filter capacitor C3 in parallel; one alternating-current input end of the rectifier stacks VD1-VD4 is connected in series with a bidirectional triode thyristor VT; two ends of the bidirectional thyristor VT are connected in parallel with a resistance-capacitance phase-shifting circuit; and a bidirectional diode VD is connected between the serial connection point of the resistor and the capacitor and the trigger electrode of the thyristor VT. In the circuit, the phase-shifting voltage of the phase-shifting circuit is used for controlling the conduction of the thyristor, thus adjusting the alternating-current input voltage of the rectifier stacks; the alternating-current input voltage is directly connected to the LED lamp group after rectification and filtration, and the circuit does not comprise a divider resistor and a transformer, so that the LED energy-saving lamp has advantages of energy conservation, simple circuit, low cost and the like.

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    CN-101861026-AOctober 13, 2010吴承斌Led节能灯