Construct a low-pass filter and measure the gain (Vin/Vout) for a range of frequencies 20 Hz to 10 kHz using an oscilloscope. Plot your data along with the theoretical curve. Use a semi-log graph. What is the half power point for this filter? Does it match the theoretical value based on the components used? (R = 2200 ohm, C = 0.12uF)
The Attempt at a Solution
I plotted the graph and it looks like the one I attached. But I am not too sure what the "half power point" is, or where to find it on my graph. Also how can I calculate a theoretical value for the half power point using my R and C?
PS. Sorry for not having labels on the graph, it's just a rough copy... Ratio of Vin/Vout is on the y-axis and frequency is on the x-axis.