What is the primary function of a free-running multivibrator?

The primary function of a free-running multivibrator is to generate a continuous clock signal. This type of multivibrator operates without requiring any external triggering, producing a repetitive square wave output on its own. This characteristic makes it essential in various electronic circuits where a stable timing pulse is needed, such as in oscillators and pulse generators. The continuous clock signal it generates can be used for timing applications, synchronization of signals, or as a clock signal for digital circuits like counters and registers. The ability to produce this output autonomously is what distinguishes free-running multivibrators from other types of multivibrators, which may require external inputs to operate.