Joined: 19 Aug 2017
|Posted: Wed Sep 13, 2017 6:55 am Post subject: Question about measuring current in a circuit?
There is something I want to ask about the circuit that I share.The circuit is used to control a motor(draws about 30 amps.)
my question is this circuit how to measure current , what I understand is that the current is measured by raising the voltage on the resistor with the op-amp. but Why power line like this , Is there a shunt res which one is it?
I can not explain exactly, but if you understand something from these pictures.
I didn't find the right solution from the Internet.
Digital Imaging Video