Patent ID: 8063599
Filing Date: 2011-11-22
Classification: H02P

Abstract:
1. A motor control device connected to a motor, the motor control device comprising: a rotation speed control circuit to provide a rotation speed control signal; a voltage transforming circuit electrically connected to the rotation speed control circuit, to transform the rotation speed control signal to a speed control voltage signal; a buffering circuit electrically connected to the voltage transforming circuit, to receive the speed control voltage signal and to delay or to buffer output of the speed control voltage signal; and a driving circuit electrically connected to the buffering circuit, to receive the speed control voltage signal from the buffering circuit and to generate a driving signal according to the speed control voltage signal to start the motor, wherein the buffering circuit further comprises: a first capacitor having a first terminal and a second terminal grounded; a first resistor having a first terminal and a second terminal grounded; a first node; and a second node electrically connected to the first node, the first terminal of the first capacitor, and the first terminal of the first resistor.