I'm looking at making a reasonably simple FET driver with current limiting / short circuit protection.. I tried to keep all the pointers in mind from my 'voltage divider with offset' thread from a month or so ago. Goals for this are to have a driver that can run off automotive power sources (I went to 30V Op amps to accommodate 24V vehicles), adjustable current limit, and scalable to enable paralleled FETS for higher power applications. I've separated the grounds for the high and low power sides as well.. I've done the same for the power supply side as well as added a cap across the IC power input since I took the screenshot. The lower OpAmp is the current sensor and as long as the non inverting input stays below the threshold of the voltage divider ~3V sourced voltage divider of R7/R9, it stays off.. When the current threshold is exceeded, it swing to ~14V, driving the upper OpAmp's inverting input from the it's normal potential of ~2.5V to ~12V, disabling the output to the MOSFET Scope traces from top to bottom are Ch D = Signal, 5V/div Ch C = MOSFET drive, 10V/div Ch B = Driver OpAmp inverting input, 5V/div set to AC coupled (~+2.5V DC offset ) Ch A = Current sense voltage. I changed the value of R9 as the sweep progressed, lowering the current threshold and you can see the effects. Other components L1, R1 are an inductive load (Large 12V motor) Q1, Q2 IRF1404 Datasheet here http://www.irf.com/product-info/dat...mlPbFvtjBbIq1AGxA&sig2=gomPdzGzxD_qRQU6BlvCsA U1 = LM2902 4 channel op amp , -40 to +125C, 32V datasheet here http://www.ti.com/lit/gpn/lm2902 I may change this to the LM 2900 which has a much faster slew rate (20V/us vs .5V/us) R9 = 10 turn trimpot Anyone got some input?