# Electronic Circuits Lab Manual PDF

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Uploaded by HeavenlyEuclid1685

EIE 202

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## Summary

This document is a lab manual for an electronic circuits lab, specifically covering the design of various amplifier circuits using bipolar junction transistors (BJTs), including emitter feedback, collector feedback, and voltage divider bias configurations. It also details the frequency response characteristics of multi-stage RC-coupled amplifiers and common-collector amplifiers.

## Full Transcript

DEIGN OF EMITTER FEEDBACK, COLLECTOR FEEDBACK AND VOLTAGE DrvIDER BLAS USING BJT AIM: To design a Emitter feedback, Collector feedback and Votage divider bias using BJT for a given le : (mA) and Va (V APPARATUS REQUIRED: SL No Component/Equipm...

DEIGN OF EMITTER FEEDBACK, COLLECTOR FEEDBACK AND VOLTAGE DrvIDER BLAS USING BJT AIM: To design a Emitter feedback, Collector feedback and Votage divider bias using BJT for a given le : (mA) and Va (V APPARATUS REQUIRED: SL No Component/Equipment Range Quantity CIRCUIT DIAGRAM: Emitter feedbuck bias R EIE202- Electronie Clreuits Lab DESIGN: Emiter feedback blas: 4/47 By Applying KVL to base and emitter lbop, Ve-,R, -V-R=0, where le = Bl, and I, (B+1)1, Let, R, = 20002 By Applying KVL to collector and emitter koop,find R Vee-Re-Ve-leR=0 Collector feedbackbias: R R R, By Applying KVL to collector and emitter loop. By Applying KVL to hase and emitter loop.find R Ve-letl,DR,-I,R, -V=0 Je= BI, EIE202 - Electronie Circuits Lab B,Ye-Yn-R(p+DI, Voltage divider bias: R,S 5/47 R Given: Assume, V, c 10 V Assume, V, 10 V, =l, xR, = I, =(B+1)!, = V, =Ve*R,+R, 10 EIE202- Electronice Clrcuits Lab R= Va +lRe +V,=Vci PROCEDURE I. For the given Ic and VCE calculate the vahue of the various resistors. 2. Connect the circuit in the bread board and verify the practical value of le and VE with the given value. Date: FREQUENCY RESPONSE CHARACTERISTICS OF TWO STAGE RC COUPLED AMPLIFIER USING BJT AIM: To obtain the Frequency response characteristics of two stage RC couplkd amplifier using BJT APPARATUS REQUIRED: SL No Component/Equipment Range Quantity CIRCUIT DIAGRAM: -V, EIE202- Electronic Circuits Lab DESIGN: Design of Rg and Re: Let Va =Ve and Vac 8/47 Design of R, and R: Current through R1,,=\07, Design ofCe: Let, X,, i Design of Cin: 26mV R R|| R, Il 0+h,r) Let, f= I000 H: EIE202- Electronie Circuits Lab Therefore. Design of Cout: Where, R =R 9/47 MODEL GRAPH: A. (dB) ldeal -Atual -Bandwidth PROCEDURE: Construct the circuit as shown in the figure for single stage amplifier. 2. Set the input sine wave value in the millvolts range using AFO 3. Vary the frequency from the AFO and note the output Vo in the CRO. 4. By taking the frequency in X-axis and gain in Y-axis draw the graph. 5. Note the lower and upper cutoff frequency by drawing the 3db line 6. Repeat the procedure for two stage anplifier. 7. Calculate the band width of single stage& two stage RC coupled anplifier. EIE202 - Electronie Circuits Lab TABULATION: Gain (dB) S. Output VokageGain(A) Frequency (Vol 20logtA) No PROCEDURE: amplifier. 1. Construct the circuit as shown in the figure for single stage AFO 2. Set the input sine wave value in the millvolts range using Vo in the CRO. 3. Vary the frequency from the AFO and note the output Y-axis draw the graph. 4. By taking the frequency in X-axis and gain in line 5. Note the lower and upper cutoff frequency by drawing the 3db 6. Repeat the procedure for two stage amplifier. amplifier. 7. Calculate the band width of single stage& two stage RC coupled EIE202- Electronic Circuits Lab 10/47 TABULATION: Gain (dB) SI. Frequency Output VolkageGain (A No (Vo) 20logt4) RESULT: INFERENCE: : Exp. No: 03 Date: FREOUENCY RESPONSE OF CC AMPLIFIER AIM: To obtain the frequency response of Common Collectoramplifier, APPARATUS REQUIRED: SL No Component/Equipment Range Quantity CIRCUIT DIAGRAM: AFO R, CRO EIE202- Electronie Circuits Lab DESIGN Design of Ry: LetVoe 12/47 Design of RË and Ra: Current through R, , - 101, V =Ve-V R MODEL GRAPH: A BI kleal -Actuul EIE202- Electronie Circuits Lab PROCEDURE: 1. Give the connections as per the circuit diagram 2. Set themagnitude of the input waveformn to 0.4 V (Peak to Peak). 3. Vary the frequency from the signal generator and note the corresponding mugnitude of the output voltage from the CRO, 4, Calculate the gain using the formula A = VN, 5. Plot the frequency response (Gain Vs Frequency) in the semi log sheet. TABULATION: SL. Output Voltage Guin (dB) No Frequency (Vo) Gain (A- 20log(A ) RESULT: INFERENCE: EIE202- Electronic Circuits Lab