For the circuit shown in Figure
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Microelectronics: Circuit Analysis and Design
- Coonsider the common emitter amplifier shown in figure below. Assume a β of 100, VBE = 0.7V, VT = 25mA and VA = 100V. Draw an equivalent DC model and determine the rπ, transconductance (gm) and ro. Draw an equaivalent AC model using the small-signal model Find an expression for vbe and vo in terms of the input voltagearrow_forwardFor the circuit given below, transistor parameters are given as -= 0.1mA/V², Vth,p=-1V, A=0. Using these information, a) Design the circuit (find the values of R1and R2) such that Ip=100HA. b) Find the small signal voltage gain Vo/Vi of the circuit. R1 10 V - R2 ww0-2.5 Varrow_forwardTime left 1:46:17 A bipolar junction transistor is described in the figure below. The transistor is implemented in the circuit with Vcc, Rc, and RB equal to 16 volts, 2k, and 10kn. Determine the value of Vout if Vin = 1.1V. V... in RB B Vec Ro V E outarrow_forward
- Design a two-stages amplifier circuit MOSFET-BJT (no bypass for the second BJT, all BJTs are in maxswing condition)Rin=1 million Ohm, Rout=4K Ohm, Gv=15. The input signal is a sine signal, amplitude=1 V, F=1K Hz and the resistance=100K Ohmarrow_forwardThe amplifier in the circuit below is driven by a signal generator v, with a small sine wave signal vhose average value is zero. Assume the transistor has a value of B-100, and V-26 mV. a. You need to design the circuit so that the de emitter current IE of the emitter resistor RE to establish the desired de emitter current. = 1 mA. Specify the value b. A de collector voltage of +5 volts is desired. Specify the value of the collector resistor Re to establish the desired de collector voltage. For this part assume that RL 5 K and the Early Effect needs to be considered. The transistor has a VA 100 Volts. Draw the ac small signal equivalent circuit model of the amplifier and determine its voltage gain. 91SV C. 2.5k MM do RE -15 V 84 Vout RLarrow_forward2. This is a small signal problem. Suppose the MOSFETS drawn have lp = 1 mA when VGS = 2.5 V, and Vth = 0.5 V. Suppose the BJTs drawn have Ic = 1 mA when VBE = 0.7 V. Av VDD = 5V VDD VDD T T Rc = 1 kn Vin RB2 = 10 kn RB1 = 10 kn w/li w Rp = 1 kn R₁ Vout (a) Derive voltage gain Ay and input impedance Zin assuming R₁ ➡8. (b) Plot Ay as a function of R, assuming R, is attached between Vout and ground. (c) Rederive Ay and Zin assuming Roo and after swapping the BJT and MOSFET. RLarrow_forward
- The circuit in Figure 1, which includes a non-linear element, is analyzed by the Small Signal Analysis method. By analyzing the voltage VR2 (t) will be calculated. For this purpose a) Find the operating point VkQ, IkQ voltage and current values of the nonlinear element. b) Linearize the nonlinear element at the operating point. c) Find the voltage VR2 (t) by calculating the effect of the variable source using the linear model. β=3 α=8arrow_forwardCalculate the second harmonic distortion for an output waveform having measured values of = 20 V. VCEmin = 2.4 V, VCEQ = 10 V, and VCE.arrow_forwardQ1. The output characteristic of a typical transistor is shown below, where the quiescent point is selected on it. This transistor is used in the bias circuit presented below. Find the suitable values of Rg and Rc to fix the Q-point of the circuit properly. +Vcc = 12 V 12- Is = 70 uA 10- Ig = 60 uA 8- Rc Is = 50 uA Rs 6- Ig= 40 uA 4. Is = 30 uĄ Is = 20 uA B = 100 2- VBE = 0.7 V 0- -2- 2 4 6 8 10 12 14 16 VCE (V) Ic (mA)arrow_forward
- Amplifier circuit is show below has a single ac input and one ac output. Assuming 2N2222 transistor: 1- Determine the Q point, then illustrate it on the transistor I-V characteristic curves. 2- Is the transistor in the active region? Explain thoroughly. 3- Construct the T-model of the transistor with all parameters labelled and evaluated. Assume room temperature. 4- Draw a complete small signal circuit model, then find the voltage gain. Explain two characteristics of this amplifier. 5- Calculate the current gain, the input resistance, and the output resistance.arrow_forwardIn the circuit shown in Figure 1, the input signal vsig is a small sine-wave signal with zeroaverage. The transistor β is 100.Figure 1: BJT Amplifier(a) For RL = 10KΩ, draw the small-signal equivalent circuit of the amplifier and determineits overall voltage gain.(b) What is the input resistance of the amplifier circuit?arrow_forwardV* = + |ov Ri Rip ERC Vs RE V: -sV The following parameters are given for this transistor: B = 200 and VA = o. Design the circuit with the following value ICQ = 1.5mA and VCEQ = 5V. Find the small signal voltage gain AV = Vo/Vs. Find the input resistance in the signal source Vs.arrow_forward
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