Features The peripheral circuit is simple, just connect the switch and battery, and the intensity of the discharge is excellent. The module can produce high voltage pulse current, small size and high efficiency. This module is the finished transformer module for small scientific production. It can be used as a high voltage power source in high school science experiments, electronic instrument, anion generator. The input voltage is 3.7V DC to 6V and will produce tens of thousands of DC high voltage. Features: Size: 64*22*24mm/2.52*0.86*0.94" Input voltage: 3.7V-6VDC Input current: 0.5A-1A. Input cable length: approx. 11 cm/4.33" High Voltage Type: Pulse DC Output voltage: about 50kV. Output current: 0.5A-1A Output cable length: approx. 10 cm/3.93" Arc Discharge Distance: 0.5cm/0.19 to 1.5cm/0.59" Power supply: 3.7V Li-ion battery, Ni-Cd/Ni-mh battery, 4V or 6V lead-acid battery (6V is preferable) Note: 1, the output ends of the cable must be adjusted properly before power on, and the arc distance depends on the voltage and battery capacity. 2, the arc distance should be short to long, does not produce the longest arc at the beginning or the module could be easily damaged. 3, the module has high power and the internal heat is not easily dissipated, so it can not work for a long time. 4, With a battery of smaller capacity, the output voltage is lower. A Li-ion battery of 2000mA, 4000mA or more is suggested. Package includes: 1 x High Voltage Generator Package List