A multiar is a specialized electronic comparator circuit historically used in radar and timing systems. It produces a sharp output pulse at the exact moment a linearly varying input voltage exceeds a pre-set DC reference voltage. The circuit typically relies on a regenerative feedback loop involving a diode and a pulse transformer to achieve high precision and fast switching times.
Heard on the job
The radar range unit uses a multiar to generate the precise timing pulse when the sweep voltage hits the reference level.