PauloSherring
Newbie level 3
Hi guys!
I want to build a 3ph line - both wye and delta wiring - signal conditioner, for hooking up on a National Instruments cRio system. According to simulations on Orcad, I could use diff amplifiers with high input resistance (1M) and then trim the signal for calibration.
But I am not sure if this is acceptable, since it might create ground loops that may introduce errors - and the aquisition system is costly and I dont want to mess it up. Is there some reading you guys could point me out?
The objective is to analyse energy quality parameters, so, RMS chips are of the table.
Thanks in advance.
Paulo Sherring.
I want to build a 3ph line - both wye and delta wiring - signal conditioner, for hooking up on a National Instruments cRio system. According to simulations on Orcad, I could use diff amplifiers with high input resistance (1M) and then trim the signal for calibration.
But I am not sure if this is acceptable, since it might create ground loops that may introduce errors - and the aquisition system is costly and I dont want to mess it up. Is there some reading you guys could point me out?
The objective is to analyse energy quality parameters, so, RMS chips are of the table.
Thanks in advance.
Paulo Sherring.