双回转机构的步进电机控制电路由TDA1521音频集成功率放大器组成平衡桥式功率驱动电路，由计算机并行口经过锁存器构成脉冲分配器。
To control stepping motors, the balance bridge power drive circuit is made up by TDA1521 integrated audio power amplifier, the pulse allotter is made up by the parallel ports of computer and latches.
本文论述双极型功率开关电路和CMOS音频功率放大器电路设计。
The paper focuses on circuit design of power switch with bipolar technology and audio amplifier with CMOS techn.
大多数传统的音频功率放大器是用双极型工艺设计和制造，其基础在于良好的双极型三极管特性。
Majority of conventional power amplifiers are designed using bipolar technology on the basis of well-known merits of bipolar transistors.
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