Solved: The circuit shown in Fig. P7.97 is known as a monostable multivibrator.The

Chapter 7, Problem 7.97

(choose chapter or problem)

The circuit shown in Fig. P7.97 is known as a monostable multivibrator.The adjective monostable is used to describe the fact that the circuit has one stable state. That is, if left alone, the electronic switch \(\mathrm{T}_{2}\) will be ON, and \(\mathrm{T}_{1}\) will be OFF. (The operation of the ideal transistor switch is described in detail in Problem 7.99.) \(\mathrm{T}_{2}\) can be turned OFF by momentarily closing the switch S. After S returns to its open position, \(\mathrm{T}_{2}\) will return to its ON state.

a) Show that if \(\mathrm{T}_{2}\) is ON, \(\mathrm{T}_{1}\) is OFF and will stay OFF.

b) Explain why \(\mathrm{T}_{2}\) is turned OFF when S is momentarily closed.

c) Show that \(\mathrm{T}_{2}\) will stay OFF for RC In 2 s.