Two PNP transistors are connected to form a Darlington pair to create a single stage amplifier. Both transistors have the same B. Assume that is large such that 3+ 1 ≈ ß. Vcc 9m2 RL 2 9m2 RL 2+9m2 RL VIN PNP Darlington Pair Used as an Amplifier 1. If the Darlington pair is to be treated as a single transistor, what is the overall 3 if the "emitter current" is IOUT? овг ов 02,8² 028 9m2 R 1+9m2 RL RL 2. Calculate the approximate expression for A₂. Use 1 and gm1 for the parameters of Q1 while T2 and 9m2 for the parameters of Q2. Assume V₁ → ∞ for both transistors. 9m2 RL iOUT VOUT

Two PNP transistors are connected to form a Darlington pair to create a single stage amplifier. Both transistors have the same B. Assume that is large such that 3+ 1 ≈ ß. Vcc 9m2 RL 2 9m2 RL 2+9m2 RL VIN PNP Darlington Pair Used as an Amplifier 1. If the Darlington pair is to be treated as a single transistor, what is the overall 3 if the "emitter current" is IOUT? овг ов 02,8² 028 9m2 R 1+9m2 RL RL 2. Calculate the approximate expression for A₂. Use 1 and gm1 for the parameters of Q1 while T2 and 9m2 for the parameters of Q2. Assume V₁ → ∞ for both transistors. 9m2 RL iOUT VOUT

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

See similar textbooks

Similar questions

Draw, Illustrate and label your schematic diagram before solving the problem. 3) Given an Emitter-Stabilize Biased transistor circuit with beta DC is 250,Base resistor is 150 ohms, collector resistor is 1.5k ohms ,emitter resistor is 500 ohms ,emitter voltage supply is -5v and Voltage at common collector is +28V,Voltage at Base-emitter junction is 0.7v,. Determine Base current, Collector current and Voltage at collector-emitter junction.
4 For the transistor shown in below figure, Calculate the value of R, that will just make the transistor work as closed switch. Hence Bpc= 80, VBE = 0.7V, VCE(sat) = 0.2V, Vcc= 12V, Rc= 2.7KN. la) Calculate the In and I.. Vcc RB Rc |b) Calculate Rp- B'
A Bipolar junction Transistor with curreat amplification factor being 100, Input Base current is 50μA. Collector voltage is 10 V and biasing voltage being +20 V. Find followings a. Collector current b. Resistance (R1) c. Collector voltage , Emitter voltage , Base Voltage & Collector-Emitter Voltage.
Consider the circuit in Figure 2. The transistor has a parameter B that varies between 50 and 200. You want to know the operation of the circuit and the electrical variables at the end points. Calculate the following for B= 50 and B= 200. a) IE, VE and VB (Analysis in DC). b) The input resistance R." (Small signal analysis). c) The voltage gain VO/Vsing (Small signal analy). This 10 ΚΩ www o Rin 100 ΚΩ +3V +1₁ HH 1 ΚΩ 1₁ 1 ΚΩ
1. For the circuit in Figure 1: a) Calculate the input and output power if the input signal results in a base current of 6 mA. b) Calculate the input power dissipated by the circuit if Re is changed to 2kn. c) What maximum output power can be delivered by the circuit if Rg is changed to 2 ko? d) If the circuit is biased at its center voltage and center collector operating point, what is the input power for a maximum output power of 2W? 20V Re = 16 2 1.2 ks2 B- 40 100 µF Figure 1
The DC Current Gain of a Transistor is Select one: a. Ratio of Collector Current to Base Current b. Ratio of Base Current to Collector Current c. Ratio of Emitter Current to Collector Current d. Ratio of Base Current to Emitter Current
For the common emitter configuration, the current amplification factor (B) is 90. What will be the value of the current amplification factor (a)? a. 0.5 b. 0.95 c. 0.978 d. 0.989
1 The AC input to a common emitter amplifier (Figure 1) is such that it is comparable to thermal voltage VT. For such an amplifier: a. Please show how a hybrid – T small-signal model would look like. Do not ignore early effect. b. Please derive relation for the terminal voltage gain and overall voltage gain. Vcc Rc R RE C Figure 1 You uolont oirouit
........ (Figure-1) R. RB= 380kN,Rc= 1kN B = 100, VBB = Vcc=12V RB ww Vec CC ......... I, V CE СЕ V ВЕ BB Q-1-b) Describe briefly the input / output characteristics and application of Common Emitter BJT Configuration
2. For the emitter-stabilized bias circuit, determine: a. IBo. b. Ica. c. VCEQ. d. Vc. e. VB. f. VE. 20 V 470 2 ICQ 270 k2 oVc VB B= 125 VCEQ OVE IBQ 2.2 k2
4. The transistor is a three-layer semiconductor device consisting of either - of material or 5. The input set for the common-base amplifier relates an input current various levels of output voltage 6. For BJT transistor ICBO =0.02 mA and ICEO= 4---- if B =60 to an input voltage for ----- ----
A circuit responding to temperature is shown in figure 6. Assume the diode equation is given by Ia Ioe(qVa/kT). What is the DC operating point of the circuit at the temperature T. Also determine the small signal output swing Av, due to an incremental change in temperature AT. For this question assume Rį = 0. Heat T+AT V. DD D'B R₁ OV +AV Figure 6: Temperature sensor