209 Solutions for Laboratory Manual to accompany Electronic Devices and Circuit Theory Eleventh Edition Prepared by Franz J. Monssen Full file at
Full file at
211 EXPERIMENT 1: OSCILLOSCOPE AND FUNCTION GENERATOR OPERATIONS Part 1: The Oscilloscope a. it focuses the beam on the screen b. adjusts the brightness of the beam on the screen c. allows the moving of trace in either screen direction d. selects volts/screen division on y -axis e. selects unit of time/screen division on x -axis g. allows for ac or dc coupling of signal to scope and at GND position; establishes ground reference on screen h. locates the trace if it is off screen i. provide for the adjustment of scope from external reference source k. determines mode of triggering of the sweep voltage m. the input impedance of many scopes consists of the parallel combination of a 1 Meg resistance and a 30pf capacitor n. measuring device which reduces loading of scope on a circuit and effectively increases input impedance of scope by a factor of 10. Part 2: The Function Generator d. T = l/ f = 1/1000 Hz = l ms e. (calculated): 1 ms*[l cm/.2 ms] = 5cm (measured): 5 cm = same f. (calculated): l ms*[cm/.5ms] =2 cm (measured): 2 cm = same g. (calculated): 1 ms*[cm/1ms] = l cm (measured): l cm = same h. .2 ms/cm takes 5 boxes to display total wave .5 ms/cm takes 2 boxes to display total wave 1 ms/cm takes 1 box to display total wave i. 1. adjust timebase to obtain one cycle of the wave 2. count the number of cm's occupied by the wave 3. note the timebase setting 4. multiply timebase setting by number of cm's occupied by wave. This is equal to the period of the wave. 5. obtain its reciprocal; that's the frequency. Full file at
212 j. (calculated): 2cm * [2V/cm] = 4Vp-p k. 8 * [.5V/cm] = 4Vp-p 1. the signal occupied full screen; the peak amplitude did not change with a change in the setting of the vertical sensitivity m. no: there is no voltmeter built into function generator Part 3: Exercises a. chosen sensitivities: Vert. Sens. = l V/cm Hor. Sens. = 50 s/cm T (calculated): 4cm*[50 s/cm)= 200 s Fig 1.1 b. chosen sensitivities: Vert. Sens. = .l V/cm Hor. Sens. = 1 ms/cm T (calculated):5 cm*[l ms/cm] = 5 ms Fig 1.2 Full file at
213 c. chosen sensitivities: Vert. Sens. = l V/cm Hor. Sens. = l s/cm T(calculated):10 cm*[1 s /cm]=10 s Fig 1.3 Part 4: Effect of DC Levels a. V (rms) (calculated) = 4V * 1/2 * .707 = 1.41 Volts b. V (rms) (measured) = 1.35 Volts c. [(1.41 1.35)/1.41) * 100 = 4.74% d. no trace on screen e. signal is restored, adjust zero level f. no shift observed; the shift is proportional to dc value of waveform g. (measured) dc level: 1.45 Volts h.
- Spring '13
- Rectifier, vi, probe plot page