| 摘要 |
PURPOSE:To perform one-two phase excitation with a simple constitution with respect to a stepping motor drive circuit which drives the excitation coil of a stepping motor on the basis of binary signals. CONSTITUTION:Logic circuits 421-424 which generate digital data of predetermined phase on the basis of four-phase control pulses D1-D4, D/A convertors 431-434 which convert digital data into analog voltage, and drive circuits consisting of low-voltage driven drivers 441-444 are connected to the respective ends L1-L4 of two-phase excitation coils LA, LB of a stepping motor 45. |
