Piezoelectric Generators

Piezoelectric ceramic is a two-way effect element, that is, it is added to the electricity, it will produce mechanical deformation, if forced to produce mechanical deformation, it generates electricity. And the bidirectional conversion efficiency is very high, of course, the conversion efficiency is more than magnetic / mechanical conversion. But it is not capable of converting magnetic / mechanical advantage, it can make the mechanical vibration displacement is very small, converted into electricity. And can be smaller size, cheap, simple structure, used in many special occasions

Piezoelectric ceramics, when mechanically activated with pressure or vibration, have the capacity to generate electric voltages sufficient to spark across an electrode gap. Piezoelectric ceramics are frequently used in this capacity to ignite a fuel source in lighters, gas stoves and welding equipment.

Piezoelectric ceramics have limited energy outputs, and therefore are potentially cost-prohibitive to feasibly use in any large-scale energy harvesting application. On the other hand, use of multilayer piezo generators in smaller electronic devices with low power requirements offers a real opportunity for exploration.