# Lab5_Prelab - Prelab 5 Single Stage BJT Amplifiers Common...

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

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

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Prelab 5: Single Stage BJT Amplifiers: Common Collector and Common Base Name: Lab Section:- v in + C V IN R 1 V CC R 2 R S R IN R OUT + v OUT- R E Figure 1: Common collector amplifier with biasing network 1. What ratio of R 1 to R 2 is required if the input bias, V IN , is 5 . 65 V and V CC is set to 12 V? Note: R 1 and R 2 approximately forms a “voltage divider” that provides the input DC bias point (just in case you did not notice). Also, regard the current flowing through R S as negligible for this calculation only. In addition, recall that a capacitor is a DC open circuit. 2. Draw the small signal model for the common collector amplifier shown in Figure 1. 3. State (do not derive) the formulas for the input impedance ( R IN ), output impedance ( R OUT ), and voltage gain ( A v ) of a common collector amplifier. Note that the most general formulas should suffice because the biasing network can be modeled using the Th´ evenin equivalent circuit (i.e. a voltage source with one resistor in series)....
View Full Document

## This note was uploaded on 04/06/2009 for the course ECSE 2050 taught by Professor Monahella during the Spring '08 term at Rensselaer Polytechnic Institute.

### Page1 / 4

Lab5_Prelab - Prelab 5 Single Stage BJT Amplifiers Common...

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

View Full Document
Ask a homework question - tutors are online