Introducing an innovative new product the SRS Preamplifier It is designed to cater a wide variety of applications and I.T. design concepts. Built to withstand even the most demanding of application. It features a low-noise, transformer-coupled preamplifier optimized for source impedances between 0.05 Omega; and 1 kOmega;. With an input noise of only 0.1 nV/radic;Hz, the SR554 can be used in a wide range of low-noise applications. the quot;bypassedquot; mode, the instrument is simply a passive transformer with a turns ratio of 100 , providing an overall voltage gain of 100. In the quot;non-bypassedquot; mode , an additional amplifier Etc.介绍了一种创新产品是SRS前置放大器合各种各样的应用程序它的理念。承受甚求最刻的应用。它具有低噪声变压器合放大器优化的源之的抗0.05Ω1 kOmega。与只有0.1 NV /拉奇入噪声兹sr554可用于广泛的低噪声应用。quotbypassedquot模式仪器只是一个动的变压器匝数比100提供100的总电压增益。在quotbypassedquot模式一个外的放大器等。