The Tesla coil is also called the Tesla coil, because it is directly transliterated from the English name "Tesla". This is a distributed-parameter high-frequency resonant transformer that can obtain high-frequency voltages of millions of volts. The principle of a Tesla coil is to use a transformer to boost the normal voltage and then discharge the device from the discharge terminal via a two-pole coil. Popularly speaking, it is an artificial lightning maker. Fans of Tesla coils around the world have made a variety of equipment to create dazzling artificial lightning. This article shares the method of using a mosquito swatter to modify a Tesla coil.
Sla coil principleThe principle is to use a transformer to boost the normal voltage and then discharge the device from the discharge terminal via a two-pole coil. The Tesla coil is coupled by two loops through the coil. First, the power supply charges the capacitor C1. When the voltage of the capacitor is high enough to exceed the threshold of the spark gap, the spark gap penetrates the air to ignite, the path of the primary coil of the transformer is formed, and the energy oscillates between the capacitor C1 and the primary coil L1. And passed through the coupling to the secondary coil. The secondary coil is also an inductor. The top cover C2 and the ground can be equivalent to a capacitor, so LC oscillation will also occur. When the two-stage oscillation frequency resonates, the energy of the primary circuit will surge to the secondary, and the voltage peak at the discharge end will continue to increase until discharge.
Tesla coil calculation formulaArc length: arc length L (unit: inch); transformer power P (in watts); L = 1.7 * sqrt (P) (sqrt is square)
Capacitance array capacity: transformer output voltage (AC) E (unit volts); transformer output current I (unit mA); capacitor array maximum capacity C (unit microfarad); AC frequency F (unit Hertz) C=(10^6 ) / (6.2832 * (E / I) * F) [The size of the capacitor involves a matching problem with the power of the transformer. When the capacitance is too large, when the AC rises to the apex (ie sqrt(2)*V, the capacitor voltage If the air gap is too low to break through the firearm, the firearm will not work and the whole system will not start.
The calculation of the capacitance array is a simple series of capacitors, parallel, and learned in junior high school. It is not mentioned here. For example, when the transformer power is 1000 watts, the output voltage is 10000 volts (AC), then the capacitance match is 0.0318uf, and the capacitance specification on hand is: 0.047uf1000~, 1600-, and then take the insurance point to the withstand voltage 1500v~, then the capacitor is needed. The array arrangement is as follows: 15 capacitors are connected in series to form a basic chain (BC); then 10 such basic chains are connected in parallel (J), and a total of 150 capacitors are required. If each capacitor has a voltage drop of 630v~ (this can be large The amplitude extends the life of the capacitor), then: 24-BC, 16--J, a total of 384 capacitors.
Other: Oscillation frequency: F=1/(2*Pi*sqrt(L*C))
Raw material0.5mm-1mm copper enameled wire 100 meters
8cm diameter PVC pipe 30cm
Wire in the wall (solid copper rod) 3M
Insulating tape
Some ordinary wires
Some metal foil paper (foil tape is best)
Several tools
Electric mosquito swatter one (2500 volts, 40 or so, the quality must be good, or the voltage can not go)
Several nails
40x50, 1cm wooden board
Electric mosquito swatter modified Tesla coil step
As shown in the figure, first dismember the electric mosquito swatter, remove the circuit board, and fix it on the wooden board with screws. (There is a screw hole on the board)
Find a bottle cap with nails inserted at both ends. The two nails are spaced 0.5mm apart. This is a firearm that controls the high-speed breaking circuit.
Make the hard wire wrapped in the wall like this, how to talk about this specific.
The tape on the right is a tin foil tape, and the side of the glue can also be electrically conductive. It is the best.
The circuit is connected like this, I will explain it specifically:
The soft yellow cord with green stripes is cut open and glued to the foil. Cover it with a layer of tin foil.
This layer of tin foil is used to ground the PVC tube coil.
The deep yellow plug with this plug is used to charge the battery and is connected to the corresponding line on the board.
Plug, buy a garbage outlet and remove it.
The blue coil is fixed to the board by a nail and a chopstick.
There are two kinds of lines that the board receives: green is low voltage, red is high voltage. Connected to the two ends of the coil, indirectly firearms.
Schematic
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