Please help with run 2 - 3 and the corresponding required results. Thank you
Posted: Thu May 05, 2022 2:25 pm
Please help with run 2 - 3 and the corresponding required
results. Thank you
10. THE OPERATIONAL AMPLIFIER (OP AMP) Equipment: ● LS 1020 LEADER Oscilloscope • DMM • Function Generator. • DC Power Supply Components: . 1 x OP AMP 747 • 2 x 100kΩ Resistor • 1 x 10 k Resistor Resistor • 1 x 2.2 k OBJECTIVES: To examine the OP AMP under open and closed loop conditions. To obtain measured value of the closed loop gain (Av). ● To analyze the effect of overdriving the non-inverting amplifier. To determine the closed loop amplifier frequency response. ● To visualize the distortion due to the slew rate limitation. 14 13 12 11 10 9 8 O O O O O O O O Pin Numbers OP AMP 747 O O O O O O 1 2 3 4 5 6 7 Fig.1 Board with the OP AMP 747 Note: Only 14 out of the 16 board connections are used. The 747 OP AMP is a 14-pin Integrated Circuit. 40
12V 100 ΚΩ 1 Function Generator Vs 10 ΚΩ 12V # Fig.2 RUN I: OPEN LOOP a. Wire the circuit shown in figure 2. Connect pin 1 to ground (position A). Set the voltages of the power supplies to +12 V and -12 V as shown on the schematic. b. Set the function generator frequency to 1kHz, and the amplitude to minimum. c. Connect the oscilloscope to observe Vo. Sketch a fully labeled waveform of Vo. RUN II: CLOSED LOOP a. Connect pin 1 to position B (closed loop). b. Sketch fully labeled waveforms of Vs and Vo. C. Increase Vs until the output distorts; Observe and record Vo. 41 Vo 1100 ΚΩ 2.2 ΚΩ
RUN III: FREQUENCY RESPONSE a. Reduce Vs to a minimum. b. Take data to plot a frequency response curve of the amplifier. Measure both Vo and Vs at each frequency.(A range starting from 10Hz to 100kHz is suggested here). RUN IV: FREQUENCY DISTORTION a. Replace the sinusoidal Vs with a square wave. Keep Vs at minimum, with f=1kHz. b. Sketch a fully labeled waveform of Vo. c. Increase f while observing Vo. When Vo distorts, sketch the waveform of Vo. REQUIRED RESULTS 1. Explain the waveforms of Vo in RUN I,c. 2. Compute the (closed loop) voltage gain in RUN II,b from your data. Compare with the theoretical value. Explain any differences. 3. Plot the frequency response curve on a 4-cycle semi-log paper from the results of RUN III. What is the value of fi? 4. Explain why Vo distorts in RUN IV,c. 42
results. Thank you
- Please Help With Run 2 3 And The Corresponding Required Results Thank You 1 (128.52 KiB) Viewed 33 times
12V 100 ΚΩ 1 Function Generator Vs 10 ΚΩ 12V # Fig.2 RUN I: OPEN LOOP a. Wire the circuit shown in figure 2. Connect pin 1 to ground (position A). Set the voltages of the power supplies to +12 V and -12 V as shown on the schematic. b. Set the function generator frequency to 1kHz, and the amplitude to minimum. c. Connect the oscilloscope to observe Vo. Sketch a fully labeled waveform of Vo. RUN II: CLOSED LOOP a. Connect pin 1 to position B (closed loop). b. Sketch fully labeled waveforms of Vs and Vo. C. Increase Vs until the output distorts; Observe and record Vo. 41 Vo 1100 ΚΩ 2.2 ΚΩ
RUN III: FREQUENCY RESPONSE a. Reduce Vs to a minimum. b. Take data to plot a frequency response curve of the amplifier. Measure both Vo and Vs at each frequency.(A range starting from 10Hz to 100kHz is suggested here). RUN IV: FREQUENCY DISTORTION a. Replace the sinusoidal Vs with a square wave. Keep Vs at minimum, with f=1kHz. b. Sketch a fully labeled waveform of Vo. c. Increase f while observing Vo. When Vo distorts, sketch the waveform of Vo. REQUIRED RESULTS 1. Explain the waveforms of Vo in RUN I,c. 2. Compute the (closed loop) voltage gain in RUN II,b from your data. Compare with the theoretical value. Explain any differences. 3. Plot the frequency response curve on a 4-cycle semi-log paper from the results of RUN III. What is the value of fi? 4. Explain why Vo distorts in RUN IV,c. 42