# HW_S09_08 - .OP .TRAN 1U 5M .FOUR 1KHZ V(7) .MODEL NBJT NPN...

This preview shows pages 1–5. Sign up to view the full content.

14.107 *Problem 14.107 - Multistage Amplifier – Figure P14.106 VCC 12 0 DC 15 VI 1 0 AC 1 RI 1 2 10K *For output resistance *VI 1 0 AC 0 *VO 11 0 AC 1 C1 2 3 22U R1 12 3 820K R2 3 0 100K Q1 5 3 4 NBJT RE1 4 0 2K C2 4 0 22U RC1 12 5 18K C3 5 6 22U R3 12 6 160K R4 6 0 43K Q2 8 6 7 NBJT RC 12 8 4.7K RE2 7 0 1.6K C4 7 0 22U C5 8 9 22U R5 12 9 910K R6 9 0 1.2MEG M3 12 9 10 10 NMOSFET

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

View Full Document
RE3 10 0 3K C6 10 11 22U RL 11 0 250 .OP .AC LIN 1 3KHZ 3KHZ .MODEL NMOSFET NMOS VTO=1 KP=.001 LAMBDA=0.02 .MODEL NBJT NPN IS=1E-16 BF=100 VA=70 .PRINT AC VM(3) VP(3) IM(VI) IP(VI) VM(11) VP(11) IM(C6) IP(C6) .END Results: A v = VM (11) = + 711 | R in = VM (3) IM ( VI ) = 8.29 k | R out = 1 IM ( C 6) = 401
14.55 *Problem 14.55 - Common-Emitter Amplifier 5mV VCC 6 0 DC 9 VEE 4 0 DC -9 VS 1 0 SIN(0 0.005 1K) C1 1 2 1U RB 2 0 10K RC 6 5 3.6K RE 3 4 2K C2 3 0 50U C3 5 7 1U R3 7 0 10K Q1 5 2 3 NBJT

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: .OP .TRAN 1U 5M .FOUR 1KHZ V(7) .MODEL NBJT NPN IS=1E-16 BF=100 VA=70 .PROBE V(7) .END *Problem 14.55 - Common-Emitter Amplifier 10mV VCC 6 0 DC 9 VEE 4 0 DC -9 VS 1 0 SIN(0 0.01 1K) C1 1 2 1U RB 2 0 10K RC 6 5 3.6K RE 3 4 2K C2 3 0 50U C3 5 7 1U R3 7 0 10K Q1 5 2 3 NBJT .OP .TRAN 1U 5M .FOUR 1KHZ V(7) .MODEL NBJT NPN IS=1E-16 BF=100 VA=70 .PROBE V(7) .END *Problem 14.55 - Common-Emitter Amplifier 15mV VCC 6 0 DC 9 VEE 4 0 DC -9 VS 1 0 SIN(0 0.015 1K) C1 1 2 1U RB 2 0 10K RC 6 5 3.6K RE 3 4 2K C2 3 0 50U C3 5 7 1U R3 7 0 10K Q1 5 2 3 NBJT .OP .TRAN 1U 5M .FOUR 1KHZ V(7) .MODEL NBJT NPN IS=1E-16 BF=100 VA=70 .PROBE V(7) .END Results: v i 1 kHz 2 kHz 3 kHz THD 5 mV 5.8 mV 0.335 mV (5.7%) 0.043 mV (0.74% 5.9% 10 mV 12.4 mV 1.54 mV (12.5%) 0.258 mV (2.1%) 12.8% 15 mV 20.6 mV 4.32 mV (21%) 1.18 mV (5.4%) 22%...
View Full Document

## This note was uploaded on 01/20/2010 for the course ECE 255 taught by Professor Staff during the Spring '08 term at Purdue University-West Lafayette.

### Page1 / 5

HW_S09_08 - .OP .TRAN 1U 5M .FOUR 1KHZ V(7) .MODEL NBJT NPN...

This preview shows document pages 1 - 5. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online