Tesla coil principle

Tesla coil principle: ordinary voltage is boosted by transformer, and then discharged from the discharge terminal through two-pole coil.

Tesla coil is also called Tesla coil because it is transliterated directly from the English name Tesla. This is a high-frequency series resonant transformer with distributed parameters, which can obtain a high-frequency voltage of one million volts. The principle of the traditional Tesla coil is to boost the common voltage with a transformer and then charge the resonant capacitor of the primary LC circuit. When the capacitor reaches the discharge threshold, the spark gap discharges, and the primary LC circuit resonates in series, providing sufficient excitation power for the secondary coil.

Secondly, it is equal to the frequency of the secondary LC loop, which makes the inductance and distributed capacitance of the secondary coil resonate in series, and then the discharge terminal voltage is the highest, so lightning is seen. Generally speaking, it is artificial lightning. There are fans of Tesla coils all over the world. They made all kinds of equipment and created dazzling artificial lightning, which was very beautiful.

Application of Tesla coil

Tesla coil is not only used in games or art, but also of great significance. For example, it can realize wireless transmission of electric energy, with high transmission efficiency and little ecological damage. However, there are still many difficulties and obstacles in practical application, which can not be applied to actual power transmission. Lightning is an atmospheric discharge phenomenon. When lightning happens, it releases huge energy, the voltage is as high as several million volts, and the average current is about 2× 105A.

It is estimated that the earth is struck by lightning 45 times every second. The energy generated by a lightning bolt is enough to make an ordinary car travel about 290 ~ 1450 km, which is equivalent to the energy generated by 30 ~ 144L gasoline. However, the use of lightning is quite difficult, because it only takes tens of milliseconds to capture. Tesla coil is one of the possible tools to capture lightning.