EIE3100 Lab 3 - Negative Feedback (NFB) Amplifier - 2023 S1
EIE3100 Lab PCB: (Circuit design in Oct 2023) The circuit board schematics: Download schematics PDF file Download Schematics (Color) + PCB File PCB File: (Top View) PCB Bottom View (Back side): Download BOM of the Test Board Potentiometer (Variable resistor) circuit: So, please use either Pin #1 and Pin # 2, OR Pin #2 and #3 NOT use pin # 1 and #3 (if using #1 and #3, it becomes a fixed-resistance resistor!!!) 1) Response of Basic amplifier a) Calibrate / check your oscilloscope with its internal signal generator (2.5V peak-to-peak, 1kHz) b) Check your signal generator with the above oscilloscope c) Start experiment: i) Connect the power supply: TP9_Vcc = +12V and the negative output (-) to the ground "GND". Connect the signal generator output to the pin "TP1_IN1" of the lab test board. Adjust the amplitude so that the amplifier output Vo is approximately 2 V RMS at 1 kHz. E.g. Amplitude at about 7 mV(rms). Volt gain = e.g. 2.138 Vrms / 7.9 Vrms 2) Response of...
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