Objectives: Voltage drop measurements using resistors connected in series. The relationship between resistance value and voltage drop (Kirchhoff’s Second Law) Circuit components: 1 Plug-in board, DIN A4 576 74 1 STE resistor, 100 W, 2 W, 5% 577 32 1 STE resistor, 150 W, 2 W, 5% 577 34 1 STE resistor, 1 kW, 2 W, 5% 577 44 Power Supply: 1 AC/DC stabilizer 726 88 Connectors: 3 Pairs of connecting leads, red/blue, 50 cm 501 45 1 Set of 10 bridging plugs 501 48 Measurement Instruments: 1 Voltmeter, 10 V DC 1 Amperemeter, 10 mA DC Measuring the voltage drop across resistors connected in series. Circuit Diagram: Measuring the voltage drop across resistors connected in series. Procedure: Assemble the circuit as shown in Fig. 1. Make sure that the polarity of the voltage source and the multimeters is correct, and that the correct measurement range has been selected. Set the input voltage Vin to 10 V. Measure and record the total current Itot. Measure the voltage V1 across Resistor R1 and record it in Table 1. Measure the voltage V2 across Resistor R2 and record it in Table 1. Measure the voltage V3 across resistor R3 and record it in Table 1. Note: Due to the 5% tolerance of the resistors, equivalent deviations in the measured values are allowable. Data: Vin = 10 V Itot = R1 = 100 OHMS V1 = R2 = 150 OHMNS V2 = R3 = 1 KILO OHMS V3 = Evaluation: Add up the component voltages measured and compare this sum with the input voltage Vin. V1 + V2 + V3 = At which resistor is the component voltage drop the greatest? At which resistor is it the least? What rule can be deduced from this? Calculate and formulate the result of V1 + V2 + V3 – Vin: V1 + V2 + V3 – Vin = 0
Objectives:
- Voltage drop measurements using resistors connected in series.
- The relationship between resistance value and voltage drop (Kirchhoff’s Second Law)
Circuit components:
1 Plug-in board, DIN A4 576 74
1 STE resistor, 100 W, 2 W, 5% 577 32
1 STE resistor, 150 W, 2 W, 5% 577 34
1 STE resistor, 1 kW, 2 W, 5% 577 44
Power Supply:
1 AC/DC stabilizer 726 88
Connectors:
3 Pairs of connecting leads, red/blue, 50 cm 501 45
1 Set of 10 bridging plugs 501 48
Measurement Instruments:
1 Voltmeter, 10 V DC
1 Amperemeter, 10 mA DC
Measuring the voltage drop across resistors connected in series. Circuit Diagram:
Measuring the voltage drop across resistors connected in series.
Procedure:
- Assemble the circuit as shown in Fig. 1.
- Make sure that the polarity of the voltage source and the multimeters is correct, and that the correct measurement range has been selected.
- Set the input voltage Vin to 10 V. Measure and record the total current Itot.
- Measure the voltage V1 across Resistor R1 and record it in Table 1.
- Measure the voltage V2 across Resistor R2 and record it in Table 1.
- Measure the voltage V3 across resistor R3 and record it in Table 1.
Note: Due to the 5% tolerance of the resistors, equivalent deviations in the measured values are allowable.
Data:
|
Vin = 10 V |
Itot = |
|
R1 = 100 OHMS
|
V1 = |
|
R2 = 150 OHMNS
|
V2 = |
|
R3 = 1 KILO OHMS
|
V3 = |
Evaluation:
- Add up the component voltages measured and compare this sum with the input voltage Vin.
V1 + V2 + V3 =
- At which resistor is the component voltage drop the greatest? At which resistor is it the least?
What rule can be deduced from this?
- Calculate and formulate the result of V1 + V2 + V3 – Vin:
V1 + V2 + V3 – Vin = 0
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