Question 2
AIM: The aim of the experiment is to investigate the operational function of a resistor- transistor logic circuit.
- Connect the circuit as shown in Figure 2.
- Ask the supervisor to check the circuit connection.
- You are given Table 2.
Table 2
Sw1 |
Sw2 |
Vout (V) |
Logic State |
OFF |
OFF |
|
|
OFF |
ON |
|
|
ON |
OFF |
|
|
ON |
ON |
|
|
- Switch ON the power supply unit.
- Set switches sw1 and Sw2 to OFF positions.
- Read and records Table 2, the output voltage (Vout).
- Repeats step (e) and (f) for the other positions of switches Sw1 and Sw2 as shown in Table 2.
- Complete Table 2 by writing logic state ‘0’ for Vout less than 1.5 V and logic state ‘1’ for Vout greater than 1.5 V.
- Switch OFF the power supply unit.
- Write the Boolean expression for the logic circuit.
- Draw the logic gate symbol for the circuit.
Observation
The expected responses were
:
Sw1 |
Sw2 |
Vout (V) |
Logic State |
OFF |
OFF |
8.0 - 9.9 |
1 |
OFF |
ON |
8.0 - 9.9 |
1 |
ON |
OFF |
8.0 - 9.9 |
1 |
ON |
ON |
0.1 - 0.9 |
0 |
(j)
(k)