When wiring the Marine hoisting motor, do not build any motor control circuit on the winding or plug-in prototype board. The use of high frequency printed circuit wiring is very important to prevent pulse jitter. Usually due to excessive noise at the input end of the current detection sensor or error signal amplifier. Therefore, the printed circuit layout should have a low current signal and a high drive output buffer ground, and should be returned to the power input filter capacitance through separate paths. Depending on the circuit layout, whether a porcelain dielectric capacity (0.01 microns) needs to be connected to the VCC, Vref, and error amplifier at the same input direction as the integrated circuit. However, all large current loops should be as short as possible and thick copper wire should be used as far as possible to reduce EMI radiation.