Brushless dc gear motor controller as a kind of typical mechanical and electrical integration of machinery, they are widely used in the processing production. What you know about the current of motor controller to limit? Small make up to introduce for you! Brushless dc gear motor controller in the current limit, the external inverter bridge and the grounding resistance Rs motor controller as the current sampling, sampling the input voltage to current comparator, the comparator inverting input voltage is set to 100 mv benchmarking, in accordance with the current limiting the benchmark as current. Oscillator sawtooth wave rises, if the current is too large, the comparator will flip, and reset the Rs flip-flop, will drive the output shut down, to limit the current continue to increase,Sawtooth wave falls, the trigger setting will return, and opening drive output. When using brushless dc gear motor controller, need to learn more about motor controller of the current limit, this will bring big help to our work, make our work more safety and efficient.