I'm looking at the Max Vgs spec of N channel Mosfet. Many I'm looking at will say +/- 20V. My question is how I read into the " plus or minus" part of this. For example if I have a simplified circuit with the source tied to Gnd what would be the max voltage I could put on the gate? Would it be 20V or would it the delta of the +/- i.e. 40V? Thanks in advance