Reverse connection prevention circuit, driving power supply and lamp

The utility model provides an anti-reverse connection circuit, a driving power supply and a lamp. The anti-reverse connection circuit at least comprises a rectification circuit, a filter circuit and a current limiting circuit. The input end of the rectifying circuit is in forward connection or reverse connection with an input signal line, the output end of the rectifying circuit is connected with the filter circuit and the current limiting circuit, and the rectifying circuit outputs signals to a post-stage circuit through the current limiting circuit. The LED lamp has the advantages that a 0-10 V signal end reverse connection prevention circuit is formed by arranging the rectifying circuit, the filter circuit and the current limiting circuit, when a signal line is reversely connected, the lamp can still be normally regulated and controlled, and the trouble of installing and wiring of the lamp is reduced. 本实用新型提供防反接电路、驱动电源及灯具，至少包括整流电路、滤波电路、限流电路；所述整流电路的输入端与输入信号线正向连接或反向连接，整流电路的输出端分别与滤波电路、限流电路连接，且所述整流电路通过所述限流电路向后