ELEC 4705 Study Guide - Final Guide: Electronic Band Structure, Mosfet, Charge Carrier

• School: Carleton University
• Department: Electronics
• Course: ELEC 4705
• Professor: Tom Smy

Document Summary

The probability of an electron having enough energy to di use over this barrier is exponentially related to its height. Using an npn transistor and an n-channel mosfet, contrast the bjt and mosfet. Speci cally: (a) sketch physical devices labelling the terminals and semiconductor type. Drift due to the voltage across the source and drain. (f) explain pinch-o . For a mosfet, if the drain voltage is raised above vds,sat, the voltage across the gate at the drain end becomes less than vth and the inversion layer becomes very thin (low electron density). Quiz 3: (7 marks) optics (a) give two advantages of optical transmission with respect to electrical transmission. Two of: greater bandwidth, faster, no emi, glass cheaper, smaller, lighter, less attenuation (b) give one disadvantage of optical transmission with respect to electrical transmis- sion. What are their implications: maxwell"s equations show that light can only propagate at certain frequencies with certain forms inside a waveguide.