* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download ECE 211 Electrical Circuits Lab I
Stepper motor wikipedia , lookup
Power engineering wikipedia , lookup
Ground (electricity) wikipedia , lookup
Spark-gap transmitter wikipedia , lookup
Electrical ballast wikipedia , lookup
Pulse-width modulation wikipedia , lookup
Current source wikipedia , lookup
Variable-frequency drive wikipedia , lookup
Power inverter wikipedia , lookup
Immunity-aware programming wikipedia , lookup
Three-phase electric power wikipedia , lookup
History of electric power transmission wikipedia , lookup
Integrating ADC wikipedia , lookup
Electrical substation wikipedia , lookup
Distribution management system wikipedia , lookup
Schmitt trigger wikipedia , lookup
Power MOSFET wikipedia , lookup
Resistive opto-isolator wikipedia , lookup
Power electronics wikipedia , lookup
Buck converter wikipedia , lookup
Switched-mode power supply wikipedia , lookup
Oscilloscope types wikipedia , lookup
Tektronix analog oscilloscopes wikipedia , lookup
Opto-isolator wikipedia , lookup
Surge protector wikipedia , lookup
Voltage regulator wikipedia , lookup
Network analysis (electrical circuits) wikipedia , lookup
Alternating current wikipedia , lookup
Stray voltage wikipedia , lookup
ECE 213 Electrical Circuits Lab I LAB #1 Spring 2017 Name ___________________ Section ______________ The Measurement Lab OBJECTIVE: To become familiar with the Oscilloscope, function generator, digital multimeter and sinusoidal measurements. COMPONENTS AND EQUIPMENT: 1. Oscilloscope 2. Function Generator 3. Digital Multimeter (DMM) BACKGROUND: During labs this semester the voltage sources will be sinusoidal. This requires learning new equipment for producing and measuring the sinusoidal voltages that will be seen in the circuits. In this lab the oscilloscope, function generator and digital multimeter will be introduced. To understand sinusoidal voltages, such as the following, the ways magnitude can be represented will need to be explained. v Vm cos(t ) Volts In the above the voltage magnitude is represented as Vm which is the peak voltage, Vp. The voltage can be represented as the peak-to-peak voltage Vpp which is twice the peak voltage Vp. The voltage magnitude can also be represented as the root-mean-square (RMS) which is the peak voltage Vp divided by the square root of two. These relationships can be seen in the following equation. V pp 2 V p 2Vrms For measuring voltages oscilloscopes can measure peak or peak-to-peak voltages. Digital multimeters when using AC voltage selection will measure RMS voltage. In engineering for any circuit the calculated and measured value need to be compared. The way it is compared is using a percent error. To compute the percent error the following equation will be used, which will be used throughout the semester. PercentError MeasuredValue CalculatedValue 100% CalculatedValue ECE 213 Electrical Circuits Lab I LAB #1 Spring 2017 PROCEDURE: In this lab data will be measurement of a function generator using an oscilloscope and digital multimeter (DMM). Follow the procedure below and answer question asked. 1. Write down the hardware you are using. 2. Turn on Oscilloscope. 3. Turn on function generator and set to a sinusoid with a peak value of 2.5 volts and frequency of 1000 Hz. 4. Connect the function generator to the Oscilloscope. 5. Set the time/division of 500µs. 6. Adjust the voltage/division to the largest it can be while still viewing the whole waveform. Adjusting the reference location to also maximize this value. 7. Using cursors measure the maximum and minimum voltage of the waveform. Record this value in the Voltage Measurement Table. 8. Using the DMM measure the voltage on the terminals of the function generator. 9. Perform Calculations in Voltage Measurement Table. 10. Using the vertical cursors measure the period of the waveform. Record in the Period Measurement Table. 11. Calculate frequency. 12. Change the time/div of 200µs. Observe the change of the wave. How many divisions long is the wave from peak to peak? _____________ 13. What is the frequency? _______________ ECE 213 Electrical Circuits Lab I LAB #1 Spring 2017 Voltage Measurement Table: Cursor A Reading: (V) Cursor B Reading: (V) A-B (Peak to Peak reading): (V) DMM Reading (V) – This is rms reading Calculated peak to peak value from DMM (V) PercentError OSCOPE DMM 100% DMM Note: DMM reading needs to be peak-to-peak value Period Measurement Table: Time Cursor A: (s) Time Cursor B: (s) A-B: (s) Calculated Frequency: (Hz) Recall: f 1 T Frequency indicated from function generator: (Hz) Percent Error QUESTIONS: ECE 213 Electrical Circuits Lab I LAB #1 Spring 2017 1. What is the maximum RMS voltage the function generator can output? (This will require maxing out the voltage of the function generator and measure with DMM). 2. What can you tell about the percent error for voltage and frequency? 3. What are the differences between DMM and Oscilloscope measurements? WRITE CONCLUSION: Write a paragraph concluding on the lab. It should include information about results and if they are what was expected. This would be comparing calculated and measured values. It should give a qualitative analysis of the lab.