Circuit for outputting reduced current when input voltage of LED (light-emitting diode) power supply is reduced

The utility model provides an LED power supply input voltage drop and current drop output circuit, which relates to the technical field of LED power supply technology, and comprises an AC power supply input end L and an AC power supply input end N, one end of the AC power supply input end L and one end of the AC power supply input end N are provided with a fuse F1, a transformer T1, a capacitor C1, an inductor L1, a resistor R1, a diode D1, a diode D3, a diode D2, a diode D4, a resistor R2, a resistor R3, a resistor R4, a capacitor C2, a voltage-regulator tube ZD1 and an integrated chip U1, and one end of the AC power supply input end L is electrically connected with the fuse F1. And when the input voltage is lower than a set value, the COMP pin voltage of the U1 is reduced, and the U1 controls and reduces the output current, so that the function is realized, the circuit structure is reasonable and simple, the use is convenient, the service life of a product is prolonged, the working efficiency is high, and t