Gas lighter

It uses a physical phenomenon which is called the piezo-electric effect to generate an electric spark that ignites the combustible gas from the stove’s burner.

The lighter is wired in such a way that this whole voltage is applied in a small region of air gap between two metallic points.

Due to high voltage generated, the air is ionized and acts as a path for the discharge.

This electric discharge is the spark which when exposed to the combustible gas from the stove ignites it to produce flame.

In gas lighters, piezo-electric ceramics like lead zirconate titanate also known as PZT are used due to their low cost and high sensitivity.