There are only few steps to consider in dealing with low side switch design using NMOS with a resistive load. Low side switch is the term used because once the switch turns on; it will connect the load to the circuit ground to complete the current path. A load is not limited to resistors, it can also an inductive such
MOSFET is not well discussed in the undergrads; much more how to designing MOSFET switch. MOSFET stands for metal oxide semiconductor field effect transistor. Actually it is easier than BJT if we are talking a switch circuit. Nowadays MOSFET is very popular in circuit designs. Such in automotive, power supply and general electronics as a low side and high side
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