Patent ID: 6452356
Filing Date: 2002-09-17
Classification: H02P

Abstract:
A chopping energization control device for adjusting a current which passes through a phase coil of an electric motor when the motor drives a load, the chopping energization control device comprising:a first switching element interposed between one end of the phase coil and a high potential line of a power supply; a second switching element interposed between the other end of the phase coil and a low potential line of the power supply; and switching element driving signal generating means for generating a first driving signal and a second driving signal, the first driving signal keeping ON one of the first switching element and second switching element during a predetermined period within energization period of the phase coil, the second driving signal turning ON and OFF the other switching element repeatedly during the predetermined period, wherein each of the first driving signal and the second driving signal is alternately transmitted to each of the first switching element and the second switching element respectively each time the predetermined period elapses.