which is essentially an op-amp controlling the gate of a MOSFET in proportion to the voltage across a current sense resistor. The final circuit adds bells and whistles, primarily in the form of ...

A current flows through a resistor, and the voltage drop across ... By cutting the connection from the shunt to the controller’s sense line, and instead tying the sense line to ground, it ...

The process can be simplified with special circuit arrangements called current-shunt monitors, which are offered as standard ICs. These devices sense the voltage across a shunt resistor and ...