1) Connect the battery.

2) Press the switch 1 for the battery to be connected to the circuit.

3) Press the switch 2 for input A.

The switch in ON state is and the switch in OFF state is .

4) The LED glows if the switch 2 is OFF and does not glow if the switch 2 is ON.

The LED in OFF state is and the LED in ON state is .

Experiment to perform NOT gate on kit

Switch 2 (A)

Resistor 1

npn transistor

Transistor as a NOT gate

Resistor 2

LED

Switch 1

Battery
+
-


Specifications:
1. Battery = 5V
2. Resistor R1 = 1 Kohm & R2 = 10 Kohm
3. Transistor = NPN 2N3904