Controller of LED electric saving lamp

The utility model discloses a LED energy-conservation lamp controller, which comprises a DC power supply composed of a rectification circuit and a filtration circuit; wherein the DC power supply output terminal is connected with the input terminal of the constant current control circuit; the constant current control circuit output terminal and the current amplifying circuit input terminal are connected; the current amplifying circuit output terminal is connected to the LED lamp base. The utility model has the advantages that the universality is high and the transformer and the ballast can be dispensed with, the network power factor of the power supply is 1. According to difference of the quantity of the LED lamps, the model has realized the automatic adjusting working voltage and working current. The current negative feedback circuit overcomes the problem of reduced illumination quality incurred by the fluctuation in the power supply network voltage and current. Through field effect pipe, the DC closed circuit is formed and the current is amplified and supplied with the LED illumination lamp, thereby realizing the objective of low voltage, small current and stable power supply.