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To: Pravin Kamdar who wrote (64215)	11/21/2001 2:12:01 PM
From: TimF	Read Replies (5) \| Respond to of 275872

That might be a good idea!!! Yes in some ways it would be, but I fear my math knowledge might not be up to it. I never took calculus and it was a long time ago when I took pre-calc and I struggled in that class. Before the pre-calc level I never really had much problem with math, but after that I never went on any further. Now I would probably have to take a refresher course (either formal or just from reading and working on problems by myself) in pre-calc or maybe even as far back as Algebra 2, and then work my way forward in math, followed by all the engineering study. If I planned to be an engineer then all this and more would be worth it (required actually) but otherwise it seems to be too much of a commitment of time and money. Just one switch behind the gate in question needs to open to let current flow directly from the power supply to the gate. But how does that switch change from open to closed? The gate open's or closes based on the current in it, but the switch controling that current probably couldn't switch the same way. I understand flipping a switch to let current through (a physical switch) and I think I have a decent understanding of the idea of applying a current to a gate to open an electrical connection, but it seems to me that neither process would fit the requirements for something controling the current to the gate. A physical switch would be big and slow for an MPU even if it could be made very small and fast compared to things that we normally deal with. A source, gate, and drain arangement would itself leave the question of how it's gate's current was turned on and off. Am I wrong about physical switches being too big and slow, or is there another arrangement that I am totally ignorant of that controls the current to the gate? Tim