DRIVING LOGIC GENERATING CIRCUIT FOR THREE-PHASE STEP MOTOR

摘要

PURPOSE: A driving logic generating circuit for a three-phase step motor is provided to realize a driving logic value without using a micro controller. CONSTITUTION: A driving logic generating circuit comprises first to fourth flip-flops(FF1-FF4). The first flip flop(FF1) receives a periodical clock pulse(Clock) to output a signal for determining a rotation direction of a motor in response to the periodical clock pulse. The second flip flop(FF2) receives the periodical clock pulse to generate a driving logic value for magnetizing a first phase of the motor in response to the clock pulse signal. The third flip flop(FF3) receives the periodical clock pulse to generate a driving logic value for magnetizing a second phase of the motor in response to the periodical clock pulse signal. The fourth flip flop(FF4) receives the periodical clock pulse to generate a driving logic value of a third phase of the motor in response to the periodical clock pulse signal.