| 摘要 |
The circuit is for driving motors in which there is access to all the ends of the motor winding sections. The circuit is of the type having a set of drive circuit units connected together as a gang in parallel between power source terminals. Each unit includes in series a winding section and a transistor control switch. There is additionally provided an auxiliary circuit with an auxiliary winding and resistor combination which substantially matches the motor winding and resistor combination impedance. The auxiliary winding is used to store the energy from a motor winding section when it is turned off and then to supply the energy to the next motor winding section to be turned on, thus reducing the driving energy needed for the motor and also reducing the current rise and fall times in the windings. |
