In order to ensure A phase and B phase circuits are symmetric, digital potentiometer X9C503 with exterior pressed key in the feedback amplification circuit is designed.

在反馈放大电路设计时，采用数字电位器X9C503与外部按键配合，达到了A、B两相电路的对称性。

youdao

The u. c. l. a. researchers matched the scattered light with the pump energy from another laser in a way that created constructive feedback resulting in a net amplification of light.

加大洛杉矶分校研究人员让散射光与来自另一具雷射的能量相遇，以产生建设性的反馈，借此放大光的净振幅。

youdao

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。

youdao