Número de parte del fabricante BB-32621
BREADBOARD TERM STRIP 3.20X2.08"
Bud Industries
Blog #01: Basic Circuit and Measurement
1
This blog and the accompanying videos teach how to use important equipment and some electronic circuits. This blog acts more like a lab handout or an outline of the experiments for the video that goes beside it.
Experiment #1
For the first experiment, the power supply would be set at 15V with a 4.7kΩ resistor, as shown in Figure 1.
Figure 1: A basic circuit with a single resistor.
Determine the color bands for the 4.7kΩ resistor with a 5% tolerance.
Apply a 15V DC power supply onto the circuit and use the DMM to record the circuit values in Figure 2. Pay attention to the polarity of the DMM and the measured values.
Figure 2: A basic one resistor circuit with labeled current and voltage.
Using the measured values from the previous table, calculate the power of each element and specify whether the power is absorbing or supplying. The textbook convention will be used where the positive value represents absorbing power and the negative value the supplying power.
Experiment #2
For the second experiment, the conservation of power law will be validated using a circuit with a power supply set to 15V and two resistors as shown in Figure 3.
Figure 3: A basic circuit with two resistors.
Determine the color bands for the 2.2kΩ resistor with a 5% tolerance.
Determine the color bands for the 1kΩ resistor with a 5% tolerance.
With the DMM, measure the value of the 2.2kΩ resistor and the 1k resistor. Then, record it in the following table.
Apply a 15V DC power supply onto the circuit and use the DMM to record the measured values of the voltage source shown in Figure 4. Pay attention to the polarity of the DMM and the measured values.
Figure 4: A basic two-resistor circuit with currents and voltages labeled.
Now measure the voltage across R1 and the current through the resistor.
Now measure the voltage across R2 and the current through the resistor.
Using the measured values from the previous tables, calculate the power of each element and specify whether the power is absorbing or supplying. Remember that the textbook convention will be used where the positive value represents absorbing power and a negative value for the supplying power.
ANSWER KEY:
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