[dark_lord]

I presume you're an electrical engineer with experience in this area?

[Poohbah]

I've studied the issue.

You have to have the pulse create a potent enough SGEMP within the circuitry that it jumps across a fairly wide air gap (the mechanical portion of the circuit that must be closed in order for the bag to fire--it consists of a heavy weight that only moves when subjected to VERY high decelerations--you could stick that thing in a jet fighter, yank and bank until you GLOC, and it won't move).

Air is a remarkably effective insulator, so you need enough voltage to turn the air in the air gap into a conductive plasma.

[Poohbah]

Part II--posted too soon.

To get that kind of plasma, you're going to need LOTS of flux on target--and since you'd be sitting in the target area, you'd get hit with it.