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The Summary of the Argument should also discuss the qualitative (visual) conclusions you reach about the behavior of the current when each of the circuit elements we use (resistor, capacitor, and diode) are connected to an AC voltage.
Preparing for the lab:
We will be doing "Lab 38" pretty much as described in the lab manual with some changes in what we will observe on the oscilloscope screen.
Answer the pre-lab questions on LON-CAPA after reading the background information on pages 379 through 381 in the lab manual. You should also look at the pictures of the actual oscilloscope display below and the diagram on LON-CAPA.
Hint: You must read questions 5 and 6 very carefully while thinking about how the oscilloscope screen would look when measuring a very large voltage (maximum + and - excursion of the trace on the screen) and one so small as to be barely visible (smallest visible deviation from a flat line, which will be about 1/5 of a 1 cm division).
I will go over some of the details of how to use the oscilloscope and interpret readings made on it at the start of class, but you should read the prelab and review additional info given here.
The data pages provide graphs that have the same number of major divisions as you see on the screen. Use them to make careful drawings, to scale, of what you see on the screen. They can also help you to visualize the situations needed to answer some of the prelab questions.
Pay attention to how the wave generator is hooked up to the frequency counter with a coax cable and then split to regular cables. (This part of the setup is the same as what we used last semester for the wave experiment.) You will have to hook it up yourself for the next lab.
See a separate page on use of the oscilloscope and its controls.
Picture of the oscilloscope in operation, connected by a coax cable
to the wave generator and digital frequency counter above it.
For this lab, you will find the equipment assembled like you see
it here. For later labs you will have to make the connections
yourself, so pay attention to how the wave generator and frequency
counter are hooked up today.
Contact me if you have any questions.