In a monostable multivibrator, what role do transistors Q1 and Q2 play?

In a monostable multivibrator, the role of transistors Q1 and Q2 is to function as on/off switches. This type of multivibrator is designed to produce a single output pulse in response to an input trigger. When the trigger is applied, one of the transistors becomes conductive, which allows current to flow and creates a defined output pulse duration. This pulse length is determined by external components such as resistors and capacitors in the circuit.

The action of turning the transistors on and off is crucial for generating the desired output pulse. After the pulse has been generated, the circuit returns to its stable state, awaiting the next trigger. The switching function of the transistors is what allows for the controlled timing of the output signal, making them integral to the operation of a monostable multivibrator.

The other roles listed—amplifiers, oscillators, and voltage regulators—do not accurately depict the function of Q1 and Q2 in this specific configuration.