一、重合输出电路的含意 这种电路主要应用于光电转换系统中。特别是用于硅光电二极管作为接收元件的系统中。它对于消除放大器本身的热噪声,提取弱信号,提高信号的接收效率,效果显著。 一般说来,工作在6943A′波段的光电倍增管背景噪声起主要作用,而用硅光电二极管作接收元件,则以放大器的第一级的噪声起主要作用。然而,工作于1.06μ的光电倍增管则 First, the coincidence of the meaning of the output circuit This circuit is mainly used in photoelectric conversion system. Especially in systems for silicon photodiodes as receiving elements. It is to eliminate the thermal noise of the amplifier itself, extract weak signals, improve signal reception efficiency, the effect is remarkable. In general, the background noise of a photomultiplier tube operating in the 6943A ’band plays a major role, whereas using a silicon photodiode as a receiving element plays a major role in the first stage noise of the amplifier. However, photomultiplier tubes working at 1.06μ are