Relay smooth switching technique and application in magnetic resonance sounding system
Wang Ying-ji · Journal of Jilin University · 2011
The disturbance on the signal conditioning circuit caused by the relay was analyzed and the relay smooth switching technique was proposed to remove the relay disturbance.A smooth switching circuit was designed based on the N-canal metal oxide semiconduetor,and used in the magnetic resonance sounding(MRS) system.The experiments proved that the technique can remove effectively the disturbance of the relay and reduce the time delay to 8 ms.It enhances the capability of the signal conditioning circuit to receive the weak signal,improves the performance of the instrument JLMRS.