As shown in the figure is a low noise differential circuit. The circuit adds a small number of components to the basic differentiator, which has overload protection capability, good stability and low noise. The R connection enables the circuit to be stable and acts to reduce noise and increase input impedance. When the operating frequency of the differentiator is not high, in order to better suppress high frequency noise, a capacitor Cp is added. The Zener diode D is set in consideration of the possibility of sudden occurrence of large unipolar noise. Cp is used to bypass the thermal noise on Rp and keep the loop stable.
9V Dc Adapter,Interchangeable Plug 9V 1A Power Adapter,9V 1A Power Adapter,Ac Dc Adapter 9V 1A
ShenZhen Yinghuiyuan Electronics Co.,Ltd , https://www.yhypoweradapter.com