Definition
An electronic circuit or device that produces short, sharp bursts of electrical energy (pulses) at regular, controlled intervals. In aviation systems, pulse generators provide the timing or triggering signals used by radar, transponders, distance measuring equipment (DME), and other electronic instruments that rely on precisely timed pulses rather than continuous signals.
Plain English
A device that creates a steady stream of quick electrical 'blips' on demand. Other equipment uses these blips as timing signals or as the actual pulses sent out by radar and similar systems.
Context Anchor
Seen in aircraft electrical, ignition, engine indicating, and sensor system descriptions.
Derivation
From Latin pulsus, meaning 'a beat' or 'a stroke,' and generator, 'something that produces.' Together: a device that produces beats. The aviation use keeps that idea exactly -- it produces electrical 'beats' on a precise schedule.
Why Pilots Care
Pulse-based systems like radar and DME only work because the pulses are timed accurately. If a pulse generator drifts or fails, the equipment that depends on it gives wrong readings or stops working altogether.
Analogy
A pulse generator is like a metronome for an electrical system: it sends short, regular signals that other parts use for timing.
Intuition Check
Do not think of “pulse” here as only a heartbeat or a pressure surge. In this term, a pulse is a short electrical signal.
Example Sentence 1
The transponder's pulse generator produces the timing signals used to reply to ground radar interrogations.
Example Sentence 2
Technicians connected the pulse generator to the magneto timing circuit to check spark timing.