What is the function of a Beckett oil burner ignition transformer?

It converts line voltage to a high voltage output that produces a spark across electrodes to ignite atomized fuel oil. The transformer must deliver stable ignition energy, tolerate heat, and operate reliably through repeated start cycles. Proper wiring, grounding, and electrode adjustment are essential to translate transformer output into dependable ignition. In modern systems it may be replaced by a solid state igniter, but the functional goal remains the same: consistent spark for safe burner startup and stable combustion.