Question 1
AIM: The aim of both experiments is to investigate the function of Zener diode in a transistor series voltage regulator.
- Connect the circuit diagram as shown in Figure 1.
- Ask the Supervisor to check the circuit connection.
- You are provided with Table 1.
Table 1
Vin (V) |
Vout (V) |
2 |
|
4 |
|
6 |
|
8 |
|
10 |
|
12 |
|
- Set the power supply unit to 2 V.
- Close switch (S)
- Read and record in Table 1 the value of Vout .
- Open switch (S)
- Repeat steps (d) to (g) for the other values of Vin in Table 1.
- Plot a graph of Vout (V) on the vertical axis against Vin (V) on the horizontal axis
Observation
The expected responses were:
Table 1
Vin (V) |
Vout (V) |
2 |
1.0 - 2.0 |
4 |
3.0 - 4.0 |
6 |
5.0 - 6.0 |
8 |
7.0 - 8.0 |
10 |
9.0- 10.0 |
12 |
11.0 - 12.0 |
(i) A linear graph with origin (0, 0) with features such as title, labelled axes, appropriate scales, correct point picking and line of best fit.