A 1 μs pulse can be converted into a 1 ms pulse by using

Explanation:

Given that the 1 μs pulse is converted into a 1 ms.

This is pulse widening. This can be achieved with the help of the monostable multivibrator.

Monostable multivibrator:

The circuit is shown below and the operation also explained

2 NOR gates and 1 RC network is used.

Assume that the pulse is initially in a stable state, if we apply the trigger it goes to the unstable state and after some time again it goes to a stable state.

Step1: at t = t₁

The trigger is applied (positive trigger).

Due to triggering V_a, V_b changes as shown below

Output changes as shown

Step2

As V_a → 0, capacitor charges towards + 5 V with τ =RC

Step3

Once V_c = 5 V, then V₀ becomes 0 volts and V_a rise to + 5 V

NOTE: V_b = V_c

Extra concept:

The structure with the NAND gates is shown below

• Connect the R to ground
• Use negative edge trigger