How does an oil burner ignition transformer differ from a Tesla coil?

An oil burner ignition transformer is designed to deliver high voltage at low current to create a controlled spark across burner electrodes, typically in the range needed for reliable ignition in a furnace or boiler. It is built for duty cycling and safety in heating equipment. A Tesla coil is a resonant high frequency transformer system designed to produce very high voltages and visible arcs for demonstration or specialized purposes. It operates differently, with resonant circuits and high frequency, and is not appropriate or safe as a burner ignition source.