EECS 100 Multimeter and Supplies L Chua LAB REPORT 1 V2 Lab Session Name 1 SID Name 2 SID P Predicted Summarize your answers on the LAST SHEET and hand in at the BEGINNING of the lab This is your PRELAB Report M Measured Hand in report at the end of the lab This is your LAB Report 1 Laboratory Power Supply Set the laboratory supply for 5V output and 20mA maximum current and load it with resistor R1 1k Figure 0 Use the 0 25V output Figure 0 Power supply with resistive load and voltmeter a Verify the output voltage with the voltmeter Use the multimeter for all these measurements The meter that is built into the supply is not as accurate Predicted value V of 1 P Measured Value V of 1 M b Disconnect the voltmeter What is the current flowing through resistor R1 Predicted value A of 1 P Design a circuit for measuring the current flowing through R1 Your diagram should include the supply resistor and the ampere meter Page 1 of 5 EECS 100 Multimeter and Supplies L Chua of 3 P Measured Value A of 1 M of 2 M Explain discrepancies c Replace R1 with a 100 resistor What are the voltage across and current flowing through the resistor Predicted values V A of 2 P Measured values V A of 1 M of 2 M Explain discrepancies d Calculate the smallest value of R1 for which the supply output remains at 5V Calculated value of R1 of 2 P Measured voltage and current note that the resistor gets warm or hot if you increase the voltage V A of 2 M of 2 M Explain discrepancies Page 2 of 5 EECS 100 Multimeter and Supplies L Chua e Measure the IV characteristic of the supply with the settings from part a using different values of R1 to get sufficient data points Also transfer the measured data points from parts b c and d to the graph Please draw neatly and use a ruler of 3 P of 3 M m Page 3 of 5 EECS 100 Multimeter and Supplies L Chua SUGGESTIONS AND FEEDBACK Time for completing prelab Time for completing lab Please explain difficulties you had and suggestions for improving this laboratory Be specific e g refer to paragraphs or figures in the write up Explain what experiments should be added modified how or dropped Page 4 of 5 EECS 100 Multimeter and Supplies L Chua PRELAB SUMMARY Summarize your prelab P results here and turn this in at the BEGINNING of the lab session Problem 1a 1b 1b Result V A 1c V A 1d 1e Page 5 of 5 Points of 1 P of 1 P of 3 P of 2 P of 2 P of 3 P
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