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介绍了该放大器的工作原理、特性及应用。其特点是低噪声、低漂移、宽频带，能对合直流成分微弱交流电压信号（μV）进行不失真的精确放大，放大倍数可达千倍；在带宽0—100kHz范围，线性度优于0．05％。文中给出了电路图，特性及测试结果。
The working principle, characteristics and application of the amplifier are introduced. It is characterized by low noise, low drift and wide frequency band. It can accurately amplify the faint AC voltage signal (μV) of the DC component with a magnification of thousands of magnifications. Its linearity is better than 0 in the range of 0-100 kHz .05%. The paper gives the circuit diagram, characteristics and test results.