A circuit arrangement that is used for feed and control of emitting diode device

The utility model relates to a circuit arrangement that is used for feed and control of emitting diode device has: a power supply. A compare repeatedly that is used for the measuring device and the analytical equipment of the total voltage on the current circuit, total voltage and threshold voltage before this analytical equipment is used for by the setting to be less than threshold voltage if reach current total voltage, then be used for shoing at least one emitting diode's short circuit, with be used for preserving the first memory in initialization stage institute measuring total voltage, a multiplier that is used for the current total voltage of repeated measurement under running state and coefficient k to multiply each other, a third memory for saving the A second memory of the threshold voltage's that confirms like this value and be used for preserving the current total voltage of repeated measurement, and the function table, this function table is used for according to with the help of current temperat