| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a motor drive circuit which can monitor step-up action, step-down action, etc., concerning a motor drive circuit having a step-down chopper circuit and/or a step-down chopper circuit. <P>SOLUTION: This motor driving circuit has the step-up chopper circuit which boosts the DC voltage from a power source into high voltage and supplies it to a motor, the step-down chopper circuit which drops the generated regenerative voltage into the voltage for charging the above power source at regeneration of the motor, and a coil for monitor of circuit action which is added as a transformer to the step-down chopper circuit and/or a reactor within the step-down chopper circuit. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
