Low-power-dissipation circuit energy collecting circuit

The invention discloses a low-power-dissipation circuit energy collecting circuit. The low-power-dissipation circuit energy collecting circuit comprises a rectifying and voltage-stabilizing module, a boosting module, an enabling output module and a voltage reduction module. The input end of the rectifying and voltage-stabilizing module receives an external alternating current and is used for converting the external alternating current into a direct current, and the output end of the rectifying and voltage-stabilizing module is electrically connected with the input end of the boosting module; the boosting module receives the direct current, and the output end of the boosting module is electrically connected with the input end of the enabling output module; the enabling output module receives a direct current obtained after boosting and is used for throttling the direct current obtained after boosting, and the output end of the enabling output module is electrically connected with the input end of the voltage reduction module; the voltage reduction module receives a direct current obtained after throttling and is used for reducing the voltage of the direct current obtained after throttling. According to the low-power-dissipation circuit energy collecting circuit, threshold voltage is set through the throttling function of the enabling output module, energy is output from the boosting module to the voltage reduction module, and due to the working mode that boosting and voltage reducing are sequentially carried out, continuous energy supplying to the outside can be achieved.