set03new - + R 2 + R C I C R C R C + R 1 + R 2 R 2 R BB = (...

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

View Full Document Right Arrow Icon
ECE3050 Homework Set 3 1. (a)Write the bias equation and solve for I C and V CB for the values V + =18V , R E =1k , R 1 = 130k , R 2 =36k , R C =2 . 4k , V BE =0 . 7V ,and β =99 . (b) Is the BJT biased in the active mode? [ I C =2 . 474mA , V CB =8 . 863V ] 2. Add a second npn transistor to the circuit of problem 1 as shown below. (a) Show that I C 1 does not change. (b) Show that V BB 2 = V + I C 1 R C and R BB 2 = R C . (c) For R 3 =1k , and the same V BE and β as in problem 1, write the bias equation for the second transistor and solve for I E 2 .( c )S o l v ef o r V CB for both transistors and verify they are in the active mode. [ I E 2 =11 . 10mA , V CB 2 =6 . 204V , V CB 1 =8 . 597 V ] 3. (a) Show that V
Background image of page 1

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

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

Unformatted text preview: + R 2 + R C I C R C R C + R 1 + R 2 R 2 R BB = ( R 1 + R C ) k R 2 V CC = V + R 1 + R 2 R C + R 1 + R 2 I B R 2 R C + R 1 + R 2 R C R CC = R C k ( R 1 + R 2 ) (b) For = 99 and = and R 1 = 10k , R 2 = 47k , R C = 1 . 5k , R E = 2k , V BE = 0 . 7V , and V + = 9V , write the bias equation and solve for I C and V CB . Verify that the BJT is biased in the active mode. [ = 99 : I C = 1 . 968mA and V CB = 1 . 194V , = : I C = 2 . 025mA , V CB = 1 . 019V ] 1 2...
View Full Document

Page1 / 2

set03new - + R 2 + R C I C R C R C + R 1 + R 2 R 2 R BB = (...

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