一种变压器绕组形变带电检测的信号采集电路

Signal acquisition circuit that electric -examination of transformer winding deformation band was surveyed

Abstract

本实用新型公开了一种变压器绕组形变带电检测的信号采集电路,信号采集端通过串联的第一电容和第二电容连接至第一运放的反相输入端,第一电容和第二电容之间通过第一电阻接地,第一运放的正相输入端通过第二电阻接地,第一运放的反相输入端通过第三电阻连接至第一运放的输出端,第一运放的输出端通过第四电阻连接至信号输出端,第一电容和第二电容之间通过第五电阻连接至第二运放的正相输入端,第二运放的正相输入端通过第三电容接地,第二运放的反相输入端通过第六电阻接地,第二运放的反相输入端通过第四电容连接至第二运放的输出端。本实用新型能够改进现有技术的不足,提高了信号采集的准确性。
The utility model discloses a signal acquisition circuit that electric -examination of transformer winding deformation band was surveyed, the inverting input end that signal acquisition end was put to first fortune through the first electric capacity and the 2nd capacitance connection of series connection, through a grounding between first electric capacity and the second electric capacity, the non -inverting input end that first fortune was put is through the 2nd grounding, the output of putting through third ohmic connection to first fortune is held to the inverting input that first fortune was put, the output that first fortune was put passes through fourth ohmic connection to signal output part, the non -inverting input end of putting through the 5th ohmic connection to second fortune between first electric capacity and the second electric capacity, the non -inverting input end that second fortune was put is through the third capacity ground, the inverting input end that second fortune was put is through the 6th grounding, the output of putting is transported through fourth capacitance connection to the inverting input end that second fortune was put to the second. The utility model discloses the not enough of prior art can be improved, signal acquisition's accuracy has been improved.

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