Feature: 1. MAIN PURPOSES: Produce high temperature and high-pressure plasma, used for wireless power transmission, lighting fluorescent lamps, generating wonderful arcs. 2. WORKING RANGE: The voltage input is 15-24 V DC, the arc length is 24 V, and 5-10 mm is the best, it can play clear mobile phone or computer music. 3. MULTIPLE USAGES: The kit supports continuous work for a long time, and can light LED, foam energy saving lamp and flash frequency tube, etc. 4. INCLUDED TOOLS: Including circuit board, coil, heat sink, interface, capacitor, wire, screw and other accessories to meet your various DIY needs. 5. APPLICABLE SCENES: Pperfect for wireless transmission experiment, DIY electronic products, classroom scientific experiment demonstration, etc. Specification: Item Type: Mini Music Coil Kit Material: PCB Application: Used to produce ultra high voltage, low current and high frequency alternating current. . Package List: 1 x Circuit Board1 x Coil2 x Heat Sinks1 x Wire2 x Vacuum Pipes1 x Audio Socket1 x DC Power Socket Interface2 x Color Ring Resistance1 x Monolithic Capacitor2 x Leads1 x Electrolytic Capacitor1 x Diode4 x Copper Columns6 x Screws