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**EC 2208 – Electronic Circuits Lab 1**

1. Design a CE fixed bias amplifier circuit using BJT for the following specifications VCC = 12V, RC = 5.1kΩ and RB =3 MΩ and also obtain frequency response and gain bandwidth product. 2. Design a fixed bias amplifier circuit using BJT for the following specifications : VCC = 12V, RC = 5.1kΩ and RB =3MΩ and also determine Q-point and frequency response. 3. Construct a base resistor biasing circuit using BJT common emitter amplifier. Measure the Gain and Gain – Bandwidth product by plotting the frequency response. 4. Design and construct a fixed current bias circuit using BJT common emitter amplifier. Assume Ic = 1mA, Vcc = 12V, β = 250. Determine the bias resistance to locate Q-point at the center of load line and plot the frequency response to measure its Gain and Gain – Bandwidth product. 5. Design a BJT fixed bias amplifier circuit. Assume VCC=12V and IC=2mA. Select a bias point at the centre of the DC load line. (i) Measure voltage gain (ii) Plot Gain (dB) Vs frequency (iii) Determine gain-bandwidth product. 6. Design a BJT fixed bias amplifier circuit. Assume VCC=12V and IC=1mA. Select a bias point at the centre of the DC load line. (i) Measure voltage gain (ii) Plot Gain (dB) Vs frequency plot. Locate unity-gain-frequency. 7.Construct BJT common Emitter Amplifier using fixed bias and plot the frequency response to determine the gain bandwidth product. 8. Design and construct BJT common Emitter Amplifier using fixed bias .Determine the bias resistance by locating the Q point at the center of load line. 9 Design and construct BJT common emitter amplifier using emitter bias with and without bypassed emitter resistor for the following specifications. VCC =12V, IC =1mA, RC = 4.7kΩ (i) Measure gain for different values of frequency (ii) Plot the frequency response and determine gain bandwidth product.

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10. Construct BJT common Emitter Amplifier using Voltage divider bias without by passed emitter resistor. Calculate the gain and plot the frequency response and determine the gain bandwidth product. 11. Construct BJT common Emitter Amplifier using Voltage divider bias with by passed capacitor . Calculate the gain and plot the frequency response and determine the gain bandwidth product. 12. Construct BJT common Emitter Amplifier using Voltage divider bias with by passed emitter resistor. Calculate the gain and plot the frequency response. 13. Construct BJT common Collector Amplifier using Voltage divider bias without by passed capacitor. Calculate the gain and plot the frequency response. 14. Design and Construct a BJT Common Emitter Amplifier with bypassed emitter resistor using Self-bias. Assume VCC=12V, RE=1KΩ and IC=1mA . (i) Measure voltage gain (ii) Plot Gain (dB) Vs frequency response (iii) Determine gain-bandwidth product Design and Construct a BJT Common Emitter Amplifier without bypassed emitter resistor using Self- bias. Assume VCC=12V, RE=1KΩ and IC=1mA. (i) Measure voltage gain (ii) Plot Gain in dB Vs frequency plot. (iii) Determine gain-bandwidth product 16. Design and Construct a BJT Common Emitter Amplifier with bypassed emitter resistor using Self-bias. Assume VCC=12V, RE=1KΩ and IC=2mA. (i) Measure voltage gain (ii) Plot Gain (dB) Vs frequency response (iii) Determine gain-bandwidth product 17. Design and Construct a BJT Common Emitter Amplifier without bypassed emitter resistor using Self- bias. Assume VCC=12V, RE=1KΩ and IC=2mA .(i) Measure voltage gain (ii) Plot Gain (dB) Vs frequency response (iii)Determine gain-bandwidth product. 18. Design and construct a BJT common emitter amplifier circuit using the biasing technique that can provide very high stability. Measure the Gain and Gain – Bandwidth product by plotting its frequency response

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19. Design and construct a BJT common emitter amplifier circuit using one of the most widely used combination bias systems called potential divider bias, with and without bypassed emitter resistor. Plot the frequency response to measure its Gain and Gain – Bandwidth product. 20. Design and construct BJT common emitter amplifier using voltage divider bias with and without bypassed emitter resistor for the following specifications. VCC =15V,IC =1.5mA, RC = 4.7kΩ (i) Measure gain for different values of frequency (ii) Plot the frequency response and determine gain bandwidth product. 21. Design and construct BJT common collector amplifier using voltage divider bias for the following specifications. VCC =12V,IC =1mA, RC = 4.7kΩ , (i) Measure gain for different values of frequency, (ii) Plot the frequency response and determine gain bandwidth product 22. Design and construct an Emitter Follower circuit using BJT that uses the biasing technique of self bias. Plot the frequency response to measure its Gain and Gain – Bandwidth product. 23. Design and construct a BJT common collector amplifier circuit using potential divider bias. Assume equal voltage drops across VCE & Emitter resistance RE. VRE = 6V, Quiescent current = 1mA, VCC = 12V & R2 =10KΩ. Plot the frequency response to measure its Gain and Gain – Bandwidth product. 24. Construct a two stage BJT amplifier circuit to improve the input impedance and measure its gain and input resistance. Also plot the frequency response and determine the Gain – Bandwidth product. 25. Design and Construct a BJT Common Collector Amplifier using Self-bias. Assume VCC=12V, Voltage across resistor, RE=6V and IC=2mA (i) Measure voltage gain (ii) Plot Gain (dB) Vs frequency response (iii) Determine gain-bandwidth product 26. Design and construct BJT Emitter follower circuit using emitter bias for the following specifications. VCC =12V,IC =1mA, RC = 4.7KΩ (i) Measure gain for different values of frequency (ii) Plot the frequency response and determine gain bandwidth product 27. Construct an amplifier circuit using BJT to get higher input resistance (i) Plot the frequency response and determine gain bandwidth product (ii)Measure gain and input resistance (iii)Verify Theoretical and practical values

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28. Design and Construct a BJT Common Collector Amplifier using Self-bias. Assume VCC=12V, Voltage across resistor, RE=6V and IC=1mA (i) Measure voltage gain (ii) Plot Gain(dB) Vs frequency response (iii) Determine gain-bandwidth product 29. Design and Construct a Darlington Amplifier using BJT. Assume VCC=12V and IC=4mA (i) Measure voltage gain and Output Impedance (ii) Plot the frequency response, assume lower cut-off frequency is 100Hz 30. Design and Construct a Darlington pair Amplifier using BJTs. Assume VCC=12V and IC=2mA. (i) Measure voltage gain and Input Impedance (ii) Plot the frequency response, assume lower cut-off frequency is 100Hz 31. Develop a Darlington amplifier circuit using BJT and also obtain frequency response and Gain. 32. Construct a Darlington amplifier circuit using BJT and measure its gain and input resistance. Also plot the frequency response and determine the Gain – Bandwidth product. 33. Design a Darlington Amplifier using BJT and plot the frequency response and calculate the gain bandwidth product. 34. Design a source follower with bootstrapping Gate resistance and measure the gain, input resistance and output résistance. Compare the result with the calculated values. 35. Design a Source follower amplifier with bootstrapping. Assume ID=2mA, IDSS=9.5mA, VP=-4V, Voltage drop across Source Resistance Rs= 2V and VDD=12V , (i) Measure voltage gain and Input impedance (ii) Plot the frequency response, assume lower cut-off frequency is 100Hz 36. Design a Source follower amplifier without bootstrapping. Assume ID=2mA, IDSS=9.5mA, VP=-4V, Voltage drop across Source Resistance Rs= 2V and VDD=12V (i) Measure voltage gain and Output Impedance (ii) Plot the frequency response, assume lower cut-off frequency is 50Hz 37. Construct a Source follower circuit using FET, with and without Bootstrapped gate resistance and measure its gain and input resistance

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38. Construct a common drain amplifier circuit with and without Bootstrapped gate resistance and measure its gain, input resistance and output resistance with and without bootstrapping 39. Construct a common drain amplifier with bootstrapped gate resistance and obtain input and output resistance with and without bootstrapping. Verify Theoretical and practical values. 40. Design a Source follower amplifier with bootstrapping. Assume ID=1mA, IDSS=9.5mA, VP=-4V, Voltage drop across Source Resistance Rs= 2V and VDD=12V (i) Measure voltage gain and input impedance (ii) Plot the frequency response, assume lower cut-off frequency is 100Hz 41. Construct a source follower circuit to produce very high input resistance .Plot the frequency response with and without bootstrapping. 42. Design a common drain amplifier, to measure the gain , input resistance and output resistance with and without bootstrapping. 43. Construct a differential amplifier using common mode and differential mode .Calculate their corresponding gain. 44. Construct a Differential amplifier circuit using BJT (i).Observe output at differential mode and common mode (ii).Plot the frequency response. 45. Construct a BJT differential amplifier. Assume voltage drop across the Itail resistance, VRE=2V, tail current Itail = 5mA and VCC= 12V. (i) Measure Differential-Mode gain (ii) Measure Common-Mode gain (iii) Calculate Common-Mode Rejection Ratio 46. Construct a differential amplifier circuit and measure its gain in common mode and differential mode of operations. Find out the CMRR 47. Construct an amplifier circuit to find the difference between two inputs using two matched transistors and measure its CMRR 48. Construct a differential amplifier circuit using BJT (i).Plot the frequency response (ii).Determine Differential mode gain and common mode gain (iii).Measure CMRR.

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**49. Construct a BJT differential amplifier**

49. Construct a BJT differential amplifier. Assume voltage drop across the tail resistance, VRE=2V, tail current, Itail = 4mA and VCC= 12V. (i) Measure Differential-Mode gain (ii) Measure Common-Mode gain . Calculate Common-Mode Rejection Ratio. 50. Construct a circuit to calculate CMRR using BJT which can be operated in two different modes. Construct a Class A power amplifier. Measure its output waveform and maximum power output and determine its efficiency. 52. Design and construct class A power amplifier using power transistors. (i).Plot the frequency response (ii).Determine power efficiency and maximum output power (iii).Compare theoretical and practical values 53. Design and construct class A power amplifier for the following specifications hfe =78 ,IC = 25mA,VCC = 10 V. assume necessary values (i).Plot the frequency response (ii).Determine power efficiency and maximum output power (iii).Compare theoretical and practical values 54. Design a Class-A power amplifier. Assume VCC=12V and Output power is 500mW (i) Observe output waveform (ii) Determine Maximum efficiency of the circuit 55. Construct a class – A power amplifier circuit and observe its output waveform. Measure the Maximum power output, efficiency and compare the values with the theoretical values 56. Construct a power amplifier circuit using BJT common emitter amplifier that locates its Q-point at the center of a load line. By observing its output waveform, measure the maximum power output and efficiency 57. Design a Class A power amplifier and calculate its efficiency. Prove the results theoretically. 58. Construct a class B (complementary Symmetry) power amplifier .Measure its output waveform with cross over distortion and modify the circuit in order to avoid cross over distortion.

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59. Construct a Complementary symmetry class –B power amplifier circuit and observe its output waveform with crossover distortion. To avoid that crossover distortion, do the modifications in the circuit and observe the output waveform. Measure the Maximum power output, efficiency and compare the values with the theoretical values. 60. Construct a power amplifier circuit using two bipolar junction transistors that have identical characteristics, but one is of PNP and the other is of NPN, in which the ‘Q’ point lies on the X-axis (the Quiescent current level is zero). By observing its output waveform, measure the maximum power output and efficiency 61. Construct a Class-B Complementary-Symmetry power amplifier. Assume load resistance is 470ohms. (i) Observe output waveform (ii) Measure maximum power (iii) Determine efficiency of a Class-B. Compare with the calculated value 62. Design and construct class B complementary symmetry power amplifier using power transistors. (i).Observe output waveforms with and without crossover distortion (ii).Determine power efficiency and maximum output power (iii).Compare theoretical and practical values 63. Design and construct class B power amplifier using pnp and npn transistors. (i).Observe output waveforms with crossover distortion (ii).Modify the circuit using diodes to avoid crossover distortion (iii).Determine power efficiency and maximum output power (iv).Compare theoretical and practical values 64. Construct a class B (complementary Symmetry) power amplifier, from its output waveform measure the maximum power output and determine it efficiency Construct a power supply using Half wave rectifier. Measure its D.C. Voltage and ripple factor. 66. Construct a power supply using full wave rectifier using capacitor filter. Measure its load regulation. 67. Construct a half wave rectifier circuit with capacitor filter. (i).Measure DC voltage under load and find ripple factor. Compare theoretical and practical Values ii.Plot the load regulation characteristics using zener diode

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68. Develop a power supply circuit using half wave rectifier, capacitor filter and zener diode and Draw the characteristics for load regulation. 69. Construct a Half-Wave rectifier with simple Capacitor filter. Assume load resistance, RL=500 ohms (i) Measure DC voltage under load and ripple factor (ii) Compare between measured values and calculated values 70. Construct a power supply circuit using a Half wave rectifier with simple capacitor filter. Measure the ripple factor. Plot the load regulation characteristics using Zener diode. 71. Construct a power supply using half wave rectifier and draw it characteristics for load regulation using zener diode. 72. Construct a power supply using full wave rectifier and capacitor filter. Measure its DC Voltage and ripple factor. 73. Construct a power supply circuit using a rectifier circuit that conducts for only one half cycle of the input. With simple capacitor filter measure the ripple factor. Plot the load regulation characteristics using Zener diode. 74. Construct a power supply circuit using a Full wave rectifier with simple capacitor filter. Measure the ripple factor. Plot the load regulation characteristics using Zener diode 75. Construct a power supply circuit using a rectifier circuit that conducts for both the half cycles of the input. With simple capacitor filter measure the ripple factor. Plot the load regulation characteristics using Zener diode. Compare the calculated values. 76. Construct a full wave rectifier circuit with capacitor filter. (i). Measure DC voltage under load and find ripple factor. Compare theoretical and practical Values. (ii).Plot the load regulation characteristics using zener diode

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