ITEM NAME:DC High Voltage Generator Inverter Electric Ignitor 15KV 18650 Battery DIY Kit3C Description: 100% brand new and high quality Color: White Features: This product is a booster coil production suite, the circuit is simple and reliable, with a professional line drawings, electronic research convenience enthusiasts Uses: high school science experiment, electronic equipment, negative ion generator, scientific small production. This circuit is generated when the stable high frequency arc, high temperature, can easily ignite combustible materials, so it was called the plasma lighters Parameter 15KV transformer outside dimensions of approximately: 27×16×21mm Input voltage: DC 3.7V-4.2V (limit 12v, easy to damage not recommended, this transformer is equally applicable to 12V input voltage, but requires a corresponding increase in the base of the feedback resistor to about 150ÃŽ © ~ 1.5KÃŽ ©, its resistance should be large to replace a small adjustment, or burned transistor or transformer) Input Current: