| 摘要 |
PURPOSE: To obtain a current supply control circuit, especially suitable for clock, in which a motor is fed with a chop voltage pulse having duration variable as a function of the state of a motor load. CONSTITUTION: A chopper pulse having a variable period T7 comprises a partial pulse T4 of fixed period and a predetermined number of partial pulses T6i having a variable period spaced apart by an interval T5i dependent on the current drop period between an immediately preceding peak and a reference value. Each duration T6i is proportional to each interval T5i. |
