Be careful handling the board after it being plugged in for more than a few minutes, the temperature could be very high, especially when using 15v high voltage, please add cooling fan if necessary.Ģ. Voltage input: 9-30V ( The higher the voltage, the louder the sound )Īudio Input: 3.5mm audio jack, MP3, mobile phones, computers etc.ġ. You need to bring your own welding tools to connect by yourself The wire between the coil and the PCB board may be broken. Due to the temperature difference, the coil may fall off. ģ.Note: The coil is glued to the PCB board. It's just for scientific demonstration purpose and please don't have high hope for the sound quality. When the audio signal is input, the audio signal voltage changes the primary oscillating frequency, resonance occurs in the secondary coil, and the sound is restored.Ģ.Sound Quality: This Tesla Coil adds music playback function to the ordinary Tesla, but due to the limited volume of this coil, Both the power and the arc is very small (the arc excites the air and the air vibrates due to the plasma). 1.The principle of sound: The audio signal is used to modulate the oscillating frequency.

Tesla coil sound effect