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Week 2: 1. Once trace routing is completed, print your circuit onto the Toner Transfer Paper (without the SST layer) and transfer it on to the circuit board using the fuser. ** **Note the board layout above is a depiction of the previous example circuit. 2. Etch the boards in the Sodium Persulphate tank to remove excess copper, leaving the desired traces. 3. Remove any excess toner left on traces and pads. Carefully drill holes wherever required. Use safety glasses when drilling. 4. You are advised, but not required to build your circuit on a breadboard before you solder your components, and test its characteristics. 5. If you finish Week 2 early you are highly advised to start Week 3. Week 3: 1. Solder the components on your PCB to build your circuit. 2. Apply an input sine wave of 1 KHz, 1Vpp to the input and plot the output signal. 3. Measure the frequency response of the amplifier from 100 Hz to 100 kHz by measuring the output amplitude for different frequencies of the input sine wave. Date Last Modified: 5/6/2013 11:53 PM 6
Observations Table: <strong>Filter</strong> gain versus frequency Frequency [kHz] Vin [V] Vout [V] 0.1 0.2 0.5 0.75 1 2 3 4 5 6 7 8 9 10 15 20 50 100 Gain [V/V] Gain [dB] = 20log 10 |Vout/Vin| 1. Use your experimentally measured values to plot the magnitude of the Gain [dB] ( | |) of the frequency response (the Bode plot) with Excel. Plot the magnitude (on a linear scale) on the ordinate axis and frequency (on a log scale) on the abscissa axis. This is the magnitude portion of the Bode plot. 2. Use your experimentally measured values to plot the Gain [V/V] ( ) with Excel. Plot the magnitude (on a log scale) on the ordinate axis and frequency (on a log scale) on the abscissa axis. 3. Compare the plot of of your experimentally measured values to your PSpice simulation of of the circuit. Or, you may compare the plot of | | of your experimentally measured values to your PSpice simulation of | |. 4. You are required to include the following PSpice plots: a) (log scale) vs. frequency (log scale) b) | | (linear scale) vs. frequency (log scale) i. Consult Prelab 5 for how to plot | | in PSpice. 5. Determine the cut off frequency from the plot of | | (linear scale) vs. frequency (log scale) and compare it to the theoretical value. 6. Compare the actual and theoretical 20 Log (1 + R F /R G ) pass band gains. Date Last Modified: 5/6/2013 11:53 PM 7
Page 1 and 2: Circuits 212 Lab Lab #6 Filter Desi
Page 3 and 4: HIGH PASS Note that the op-amp is u
Page 5: 3. Bias the op-amp with a ±12 V su

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