The bistable multivibrator has two absolutely stable states. ... Another trigger pulse is then required to switch the circuit back to its original state. 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.

What is a bistable circuit?

bistable An electronic circuit, usually an integrated circuit, whose output has two stable states to which it is directed by the input signal or signals. It is more usually known as a flip-flop. The term is also applied to other devices with two stable states, such as certain switches and relays.

How do you make a circuit bistable?

Construction of Bistable Multivibrator

Two similar transistors Q₁ and Q₂ with load resistors R_L1and R_L2 are connected in feedback to one another. The base resistors R₃ and R₄ are joined to a common source –V_BB. The feedback resistors R₁ and R₂ are shunted by capacitors C₁ and C₂ known as Commutating Capacitors.