8/26/2023 0 Comments How to do bode plot in multisim1: Open-loop amplifier made with three amplifier stages and discrete componentsĪs discussed in the class, the high-frequency response (poles and zeros) of an amplifier is primarily due to the internal capacitors (e.g. 1, you will need more resistors to complete the feedback amplifier shown in Fig. Connect the positive and negative power supplies of the op-amps to 10 V and -10 V, respectively. For the experiments, you can use the quad op amp LM348N (datasheet at the bottom of labs page). Additionally, the feedback amplifier enhances bandwidth and is more effective at rejecting noise. A major benefit of using a feedback amplifier is to make the gain independent of load, fabrication process, and environmental conditions such as temperature. In Part 3, we will use dominant pole compensation to stabilize the system. In Part 2, we will close the feedback loop and measure the effect on the amplifier. Part 1 involves the construction and characterization of an amplifier whose poles are accurately set by discrete resistors and capacitors. Objectives The purpose of this lab is to (1) demonstrate the effect of negative feedback on amplifier performance and (2) a method of frequency compensation. The feedback topology and concepts apply to both BJT-based and MOSFET-based op amps. 1 Lab 04: Feedback Amplifier (20 points) NOTE: 1) In this lab, we will use quad opamp to build the feedback amplifier.
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