The voltage is generally between 4000 V and 6000 V, and there are also tens of thousands of volts. The current is low, probably only a few microamps (μA).
Use external force to deform piezoelectric ceramics. Piezoelectric ceramics can generate voltage, and the higher the strain rate, the higher the voltage generated; When the piezoelectric ceramics are under pressure, thousands of volts or even ten thousand volts will be generated. Be generated. Voltage level, strong electric shock capacity.
Although the voltage generated by the piezoelectric ceramic of the lighter is very high, the current is relatively small, so it will not cause any harm to people.
Detailed information
The fuel used in piezoelectric ceramic lighters: mainly flammable gases. At first, gasoline was mainly usedlized because of its particular smell. , it is rarely used now. Nowadays, butane, propane and liquefied petroleum gas are mainly used. They are pressurized then filled in a closed air box. Once released into the air, they absorb heat, vaporize and expand quickly, making them easier to ignite.
The principle of operation of piezoelectric ceramic lighters: the ignition mechanism is equipped with piezoelectric ceramic components. Under the action of mechanical stress, piezoelectric ceramics cause relative displacement of the positive and negative internal charge centers and polarization, leading to the appearance of bound charges of opposite signs on the surfaces of the two ends of the material. Therefore, when the piezoelectric ceramic element is subjected to impact pressure, the mechanical energy is converted into electrical energy and an electric sparkHigh voltage instantaneous power is released at the tip to ignite the fuel.
Reference Materials
Baidu Encyclopedia - Lighter
Sparks usually occur when the media is completely broken down . The determining factor in whether a fluid fails is field strength, not voltage or current. The electric field distribution is different, the voltage shape is different, and the breakdown voltage is different (because only the voltage can be measured, the field intensity distribution is generally difficult to measure, so the voltage of breakdown is generally studied).
The current during breakdown is related to the breakdown voltage and the wave impedance of the air gap. As the spark discharge channel when removing a sweater, the current is very small (the specific amount is not sure, but it is probably in the mA range, I don't know), and the lightning current is almost of the order of kA.