How low-side mosfet switch works
V2 drives the gate and R1 is the resistive load. This example solves the MOSFET load line, so insufficient gate drive is visible instead of assuming a fixed on-resistance. Advanced controls adjust the generic model’s threshold and transconductance.
Level-1 square-law model with W/L = 1 at 27 °C. The calculation includes cutoff, saturation and the ohmic region, but excludes gate charge, switching loss, heating and breakdown. It does not select or rate a commercial MOSFET.
Change the form inputs or click a component value on the schematic. Choose Try in CircuitSim to simulate the configured circuit.