Jiangsu Dongcheng Tools Technology Co., Ltd.

Yan Jin

Chao Zhou

Jin Qian

For a system of adjusting a speed of an electric tool, a power supply module is connected to an inverter, the inverter is connected to a motor and a controller; the controller is connected to a switch fixed-speed module, a rotational speed display module, and a fixed-speed prompting module. The switch fixed-speed module comprises a switch trigger connected to the controller and is configured to set a target operating speed of the motor based on the amount of turned-on stroke of the switch trigger. The rotational speed displaying module is configured to display a preset operating speed of the motor. The fixed-speed prompting module is configured to prompt a setting state of the target operating speed.

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Nantong, China

Yan Jin