-Understand the purpose of Low-Pass filters and High-Pass filters in signal processing/modifications.
Lab:
For the lab, the theoretical gain for the low pass was first calculated.
The image above shows the calculations for the theoretical gain and a schematic of the circuit.
The components that were used for the lab was a function generator, a 1000Ω resistor, and a 1µF capacitor.
The actual values for the 1000Ω resistor = 975Ω and the 1µF capacitor = 1µF. |
| The input voltage |
The gain is determined by dividing the Output voltage by the Input voltage.
The results of the Low-Pass filter shows that as frequency increases, the voltage gain within the circuit will eventually reach zero .
High-Pass Filter Result
The graph for the High-Pass filter shows a slight curve with the top of the curve being the natural response. From the results, it can be determined that after the high-pass filter passes a certain frequency it begins to decreases. The graph does not show past 10000 Hz due to the digital multimeter not being able to give good data at higher frequencies.
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