lab1_bjt_notes

lab1_bjt_notes - ECE 327: Electronic Devices and Circuits...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
ECE 327: Electronic Devices and Circuits Laboratory I Notes for Lab 1 (Bipolar (Junction) Transistor Lab) 1. Introduce bipolar junction transistors “Transistor man” (from The Art of Electronics (2 nd edition) by Horowitz and Hill) Transistors are not “switches” Base–emitter diode current sets collector–emitter resistance Transistors are “dynamic resistors” (i.e., “ trans fer res istor ”) Act like closed switch in “saturation” mode Act like open switch in “cutoF” mode Act like current ampli±er in “active” mode Active-mode BJT model Collector resistance is dynamically set so that collector current is β times base current β is assumed to be very high ( β 100–200 in this laboratory) Under most conditions, base current is negligible, so collector and emitter current are equal β h fe h FE Good designs only depend on β being large The active-mode model: * Assumptions: · Must have v EC
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 08/05/2011 for the course ECE 209 taught by Professor Staff during the Fall '08 term at Ohio State.

Page1 / 2

lab1_bjt_notes - ECE 327: Electronic Devices and Circuits...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online