Rectification of alternating current circuit and method of rectification of alternating current for driving an LED module

摘要

Summary of rectification of alternating current circuit and method of rectification of alternating current for driving an LED module are disclosed a rectification circuit AC and a method of rectification of alternating current for driving an LED module.The method comprises: when a module of alternating current is in positive cycle, after alternating current is rectified, the output of alternating current to a positive cycle of rectification circuit derivation of an LED module; when the module of current alter Nothing is a negative cycle.The realization of loading according to the output of the AC AC module, and when the module of alternating current is in positive cycle, the realization of discharge, and the output of alternating current to a semi cycle supply circuit branch posit Ivo of the LED module; when the AC module is in the middle negative cycle.Grinds with alternating current, and the output of alternating current for a half cycle of negative rectification circuit of the derivation of the LED module; when the AC module is in positive cycle, the realization of loading according to the output of the AC PE This AC module, and when the module of alternating current is in the middle negative cycle.The completion of discharge, and the output of alternating current to a semi cycle supply circuit branch negative of the LED module; and when a voltage of a signal input voltage is higher than a threshold voltage set in advance, to turn off an overvoltage protection circuit Branch of the LED module.By using the present invention, stability of an output voltage can be improved, and the luminous efficiency of LED can be improved.