In monostable circuits, one coupling element is a capacitor (ac coupling) and the other coupling element is a resistor (dc coupling) In astable multivibrators both the coupling elements are capacitors (i.e. both are ac couplings).

What is the bistable multivibrator?

The bistable multivibrator has two absolutely stable states. ... In other words a multivibrator which has both the state stable is called a bistable multivibrator. It is also called flip-flop, trigger circuit or binary. The output pulse is obtained when, and why a driving (triggering) pulse is applied to the input.

What are the coupling elements in monostable multivibrator?

The astable circuit consists of two switching transistors, a cross-coupled feedback network, and two time delay capacitors which allows oscillation between the two states with no external trigger signal to produce the change in state. Monostable multivibrators have only one state which is stable.