Current Sensing Resistor

[sougata]

Hi,

It is important whether you are doing a high side or low side sensing. Low side is the easiest and most frequently used. LM358 is a dual supply amp and works with a single 5 volt supply. Please note that it is not rail-to-rail. That means your op-amp cannot output the entire supply voltage range. If you a using a dual supply then you can use OP07 and pin to pin replacement for LM741 but with better offset voltage characteristic.

Please describe your exact requirements so that some possible schematics can be posted.

[manumenzella]

Hey. Thanks for your answers. I would like to make a battery dircharger / analizer, so the resolution will have to be quite good. The discharge rate will be about 200 - 400 mah. Can you send me any example of using an op-amp to amplify the voltage. Thanks agaaaaaaaaaaaain!!!!!
Manuel