Feature: 1. Magical coil, producing high temperature and high voltage plasma. 2. coils are used to produce ultra-high voltage but low current, high frequency AC power. 3. coil can ignite, wirelessly transmit electricity, illuminate fluorescent lamps, and has wonderful arcs. There are a lot of fun and very interesting scientific experiments can be done with coil. 4. coil consists of two (sometimes three sets) coupled resonant circuits. 5. uses these coils for innovative experiments such as electrical lighting, fluorescence spectroscopy, X-rays, high-frequency AC current phenomena, electrotherapy and radio energy transmission, and transmission and reception of radio signals. 6. This product is newly developed. The primary coil is already in the PCB board. It does not need to be wound on the outside. It is convenient for fans to install, high efficiency and beautiful. It is a new design. The coil is very safe and will not be dangerous. People can be used for student experiments, graduation design assignments, etc. Specification: Item Type: Coil Input Voltage:9~12V(Can be started with a 9V battery, but for arc, the working voltage needs to be 12V) Printed Circuit Board Size:4 x 3.1cm / 1.57 x 1.22in Type and Weight:(Optional) Assembly Kit 23 g / 0.81 oz(approx.) Finished Product 22 g / 0.78 oz(approx.) Package List: 1 x Printed Circuit Board 1 x Coil 2 x Blue 3mm LED 1 x DC005 Base 2 x 105 Leaded Multilayer Ceramic Capacitor 1 x 8*8 Self Lock Switch 2 x 10K Resistor 1 x 15*10*20 Heat Sink 1 x 3*6 Screw 1 x BD243 Transistor 1 x Neon Bulb 3 x M2*4 Screw 4 x M2*7 Female-Female Standoff or 1 x Finished Coil 4 x M2*4 Screw 4 x M2*7 Female-Female Standoff Note: Assembly tools: soldering iron, glue , nozzle clamp