{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

lastfuckinlab

# lastfuckinlab - on the volts/div scale F=(1(length of the...

This preview shows pages 1–2. Sign up to view the full content.

The Oscilloscope and AC Circuits Name: Jordon Weber Date: 4/20/2010 Name: ____________________________ Lab Sect.: 02 Name: ____________________________ Lab Instructor: ______________________ Lab Activity 1: Using the oscilloscope as a DC voltmenter Q1. Write down the readings you obtained above. Single battery volts/div 1 volts/div vertical deflection [cm] 1.6 cm voltage [V] 1.6 V Two batteries in series volts/div 1 volts/div vertical deflection [cm] 3.2 cm voltage [V] 3.2 V Lab Activity 2: Using the scope to measure the amplitude and frequency of a periodic voltage signal Q2. Suppose you want to measure the frequency of a periodic input signal using the scope. Describe how you would go about doing this, i.e. , write down a relationship between the frequency f of the signal, the setting on the "sec/div" scale, and the size of the pattern on the scope’s grid. The frequency is directly related to the amount of periods per unit length (2*pi). The sec/div is the sampling rate for the oscilloscope and the size of the pattern is the amplitude of the voltage

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: on the volts/div scale. F= (1/(length of the period*(sec/div))) Lab Activity 3: Using the oscilloscope to analyze a series RLC circuit Q3. Using an Excel spreadsheet, plot the voltage amplitude versus frequency. Include a printout of the graph with your lab report. Q4. At approximately what frequency is the voltage amplitude a maximum? (Again, this is known as the "resonant frequency" of the circuit.) Resonant frequency : 90 Hz Q5. We saw in the introduction that the impedance Z is a minimum at this particular "resonant" frequency. Based on the expression for the impedance Z in Eq. 3 and the condition described above, derive a relationship between the resonant angular frequency ω , the capacitance C, and the inductance L . Be sure to show how you arrived at your result. Impedance at a minimum means that X 1 = X c wL= 1/wc w = 1/sqrt(Lc) Use this relationship and the value of C = 100 μF to deduce the value of the inductance L . W=2piF=1/sqrt(100E-6*L) L= .03127 H...
View Full Document

{[ snackBarMessage ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern