I have designed a kind of new variable gain linear pulse amplifier.

设计了一种新型可变增益线性脉冲放大器。

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A new signal processing circuit of vortex flow meter based on variable gain amplifier and digital signal processor (DSP) unit is designed.

设计一种基于变增益运算放大器和DSP数字信号处理单元的新型涡街流量计信号处理电路。

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Combined with wide band current feedback amplifier, FET input circuit and programmable circuit, variable gain amplification circuit with high speed and high input impedance is designed.

并以宽带电流反馈运算放大器为核心，辅以FET输入电路及程控电路构建了高速高输入阻抗可变增益放大电路。

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