采用IR 2110作为该功率放大电路的驱动模块，构成的整个驱动电路具有结构简单、驱动能力强、功耗低的特点。

The entire drive circuit has characteristics of sample construction, powerful drive energy and low consumed power by using IR2110 as the drive modular.

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子电路包括低噪声放大器、射频滤波器、混频器、驱动放大器、功率放大器、中频滤波器等。

The subcircuits consist of the low noise amplifier, RF filter, mixer, driver amplifier, image filter, power amplifier, transmit-receive switch and if filter and so on.

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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.

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