1. Connect the oscilloscope probes to the strain gauge. Record the peak voltage values (positive and negative) by flipping/tapping the gauge with low and high pressure. Make sure to set the oscilloscope horizontal and vertical scales appropriately so you can read the values. DO NOT USE the measure tool of the oscilloscope. Adjust your oscilloscope so you can read the values from the screen. Fill out Table 1 and provide photos of the oscilloscope.
Flip Strength Data Table
Press Strength Data Table
2. Press the “Single” button below the Autoscale button on the oscilloscope. This mode will allow you to capture a single change at the output. Adjust your time and amplitude scales so you have the best resolution for your signal when you flip/tap your strain gauge. Provide a photo of the oscilloscope graph.
Part B: Half Wave Rectifiers:
1. Construct the following half-wave rectifier. Measure the input and the output using the oscilloscope and provide a snapshot of the outputs.
2. Calculate the effective voltage of the input and output and compare the values with the measured ones by completing the following table.
3. Explain how you calculated the rms values. Do calculated and measured values match?
- For Input the rms values were calculated by dividing the peak to peak value on the function generator by the square root of 2. For output we divide the peak to peak in half then the resultant value by the square root of 2.