{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

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

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

View Full Document Right Arrow Icon
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
Image of page 1

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

View Full Document Right Arrow Icon
Image of page 2
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

  • Left Quote Icon

    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.

    Student Picture

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

  • Left Quote Icon

    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.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    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.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern