Other Parts Discussed in Thread: INA180
Hi Sir,
I am trying to make a battery current sensing circuit using LM258.
.Problem Statement- At no load condition also, the output of circuit is showing 3.8V. My requirement is for input Battery current of 0-200A (peak current) , the output voltage should be 0-5V. I have tried with both current sensing resistor as well as Mosfet (Rds). In both cases , result is same.
Please refer the attached schematic for above mentioned problems.
pic1 - Battery current sensing ckt using MOSFET
pic2- Battery current sensing ckt using shunt resistor
pic3- Typical Battery current waveform