{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

set03new

# set03new - R 2 R C − I C R C R C R 1 R 2 × R 2 R BB = R...

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

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

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: + 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 β = 99 and β = ∞ and R 1 = 10k Ω , R 2 = 47k Ω , R C = 1 . 5k Ω , R E = 2k Ω , 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. [ β = 99 : I C = 1 . 968mA and V CB = 1 . 194V , β = ∞ : I C = 2 . 025mA , V CB = 1 . 019V ] 1 2...
View Full Document

{[ snackBarMessage ]}

### Page1 / 2

set03new - R 2 R C − I C R C R C R 1 R 2 × R 2 R BB = R...

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

View Full Document
Ask a homework question - tutors are online