The aim of the experiment is to investigate the relationship between the Zener stabilized output voltage as a function of load resistance.
- Connect the circuit as shown in Figure 2.
- Ask the Supervisor to check the circuit connection.
- Copy Table 2 into your answer booklet.
Table 2
Vin=12 V constant
RL(Ω) |
100Ω |
470Ω |
1kΩ |
10kΩ |
Vout(V) |
|
|
|
|
- Switch on the power supply.
- Set the input voltage to 12V.Measure and record in Table 2 the output voltage (Vout).
- Switch off the power supply.
- Replace the load resistor (RL) with the 470Ω resistor and repeat steps (d) and (e).
- Repeat steps (f) and (g) for other values of the load resistor (RL) in Table 2.
- Switch off the power supply.
- Draw the graph of output voltage (Vout) on the vertical axis against the load resistance (RL) on the horizontal axis.
From the results in
Table 2, comment on the effect of changing load resistance
(RL) values on the output voltage.
