ELEC 3509 Final: ELEC 3509 Final Exam Fall 2004
Document Summary
Department name & course number: electronics elec 3509. Course instructor(s): prof. john w. m. rogers and calvin plett. Students must count the number of pages in this examination question paper before beginning to write, and report any discrepancy immediately to a proctor. This examination question paper may be taken from the examination room. Unless otherwise specified, use only the simplified transistor model for the. Bjt, i. e. , take rx=0, ro= , and r = . 2 marks (a) a transistor is biased at 2ma, and has an early voltage of 100v. 2 marks (c) a power transistor in a case has a heat sink attached. The junction to case, case to heat sink and heat sink to air thermal resistances are. 3 marks (e) the collector current as a function of base emitter voltage is given by. S find the sensitivity of the collector current to the base-
