Ac Circuits. Oscilloscope
AC Circuits. Oscilloscope
Arjun Patel
Group: 2
Partner: Hirbod B.
Partner: Wonyoung J.
PHY 114
Section 87725
TA: Hank Lamm
November 3rd 2011
Abstract: The main goal of this experiment to Investigate the sine wave AC signal from signal generator using the scope and determine the relationships between the rms value and the amplitude of the voltage as well as the period and the frequency of the signal. The following are the results of the lab: T= 10-3seconds, Vo=1.4V , 2% discrepancy in Vrms, 7.1% discrepancy in V0, ω=1.1*104±2.5*103, ωotheoretical=10846.5 Hz , 0.3% discrepancy in ω0.
Objectives:
To learn the relationship between the rms value and the amplitude of the voltage and the period and the frequency of the signal. Determine the resonant frequency of a driven RLC circuit from the exploration of the dissipated power on the load resistor.
Procedures:
Part 1 AC Signals
Connect the circuit, set the signal generator to a 1000 Hz sine wave of magnitude about 1V measured on the DMM. Adjust the SEC/DIV control on the scope to display one complete period of the measured waveform. Measure the period T of the wave, The frequency is given by f (Hz) = 1/T(sec). Compute the frequency. DC offset: Be sure the scope is on DC coupling. Pull out the OFFSET knob on the signal generator and watch the scope as you turn it. Adjust the DC offset so the average (center) of the sine wave is about 1.0 volts. Switch the DMM to DC, and compare its reading with the scope. Switch the scope to AC coupling and explain the result. RMS: Set the signal generator DC offset accurately to zero, watching the DMM (DC). Change the DMM to AC, then determine the amplitude of the sine wave (V0 = VPP /2) from your scope trace and compare with the reading from the DMM. Now position the signal generator in such a way that you will not able to read the frequency from the generator’s display. Change the frequency by randomly rotating the frequency adjustment knob and try to
Arjun Patel
Group: 2
Partner: Hirbod B.
Partner: Wonyoung J.
PHY 114
Section 87725
TA: Hank Lamm
November 3rd 2011
Abstract: The main goal of this experiment to Investigate the sine wave AC signal from signal generator using the scope and determine the relationships between the rms value and the amplitude of the voltage as well as the period and the frequency of the signal. The following are the results of the lab: T= 10-3seconds, Vo=1.4V , 2% discrepancy in Vrms, 7.1% discrepancy in V0, ω=1.1*104±2.5*103, ωotheoretical=10846.5 Hz , 0.3% discrepancy in ω0.
Objectives:
To learn the relationship between the rms value and the amplitude of the voltage and the period and the frequency of the signal. Determine the resonant frequency of a driven RLC circuit from the exploration of the dissipated power on the load resistor.
Procedures:
Part 1 AC Signals
Connect the circuit, set the signal generator to a 1000 Hz sine wave of magnitude about 1V measured on the DMM. Adjust the SEC/DIV control on the scope to display one complete period of the measured waveform. Measure the period T of the wave, The frequency is given by f (Hz) = 1/T(sec). Compute the frequency. DC offset: Be sure the scope is on DC coupling. Pull out the OFFSET knob on the signal generator and watch the scope as you turn it. Adjust the DC offset so the average (center) of the sine wave is about 1.0 volts. Switch the DMM to DC, and compare its reading with the scope. Switch the scope to AC coupling and explain the result. RMS: Set the signal generator DC offset accurately to zero, watching the DMM (DC). Change the DMM to AC, then determine the amplitude of the sine wave (V0 = VPP /2) from your scope trace and compare with the reading from the DMM. Now position the signal generator in such a way that you will not able to read the frequency from the generator’s display. Change the frequency by randomly rotating the frequency adjustment knob and try to