The design for the overall project is composed of two parts the main circuit and the expanded circuit.

总体方案设计由主体电路和扩展电路两大部分组成。

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For the hardware, not only all-purpose expanded circuits of the single-chip micro-processor but also input circuit and safe circuit for power failure have been designed.

硬件电路除一般单片机扩展电路外，还设计了输入电路和掉电保护电路。

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In circuit design, the mathematical model of operational amplifier expanded function is expanded circuit. The circuit includes phase electric capacity, the feedback resistance and the input impedance.

运算放大器扩展功能，在电子电路设计中其数学模型为放大电路，含移相电容、反馈电阻及输入阻抗。

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The problem is that bankers' view of the supposed optimal size of the circuit breaker, in the form of an expanded eurozone rescue fund, the EFSF, is growing by the day.

BBC: The origins of today's market mayhem

What did happen is that for more than two decades, the United States Court of Appeals for the Federal Circuit (which sits below the Supreme Court in the patent appeals process) unilaterally expanded the range of stuff that could be patented.

FORBES: Software Patents and Judicial Activism