| 摘要 |
PURPOSE:To reduce the cost and to improve the reliability of a distributor circuit by constructing to use a resistor instead of a buffer gate in the distributor, thereby reducing semiconductor elements. CONSTITUTION:A distributor is composed of gate circuits G1, G2, G3, G4 which take logic products of phase signals A, -A and a PWM signal and apply outputs A2, -A2 as control outputs to transistors Q3, Q4, Q7, Q8 of the lower stages of a bridge circuit, and resistors R6, R7 which use the phase signals A, -A as control outputs to transistors Q1, Q2, Q5, Q6 of the upper stage of the bridge circuit, thereby using the resistors R6, R7 instead of the conventional buffer gates to supply to the transistors of the upper stage of the bridge circuit without causing delays of the phase signals A, -A from the phase signal generator. |
