Features The peripheral circuit is simple, just connect to the switch and battery, and the discharge intensity is. It can be used for negative ion generator, electronic instrument and scientific experiment. This module is a finished transformer/booster module for small scientific production. It can produce high voltage pulse current, small size and high efficiency. The input voltage is DC3.7-6V DC and will produce a high voltage of 400KV DC. Features: Input Voltage: DC 3.7V ~ 6V Input Current: 0.5A ~ 1A Input wire length: approx. 4 cm. Red wire: Positive input Yellow Wire: Negative Input High Voltage Type: Pulsed DC Current Output voltage: about 400kV (attention) Output current: 0.5A ~ 1A Output wire length: about 5 cm. Arc length: 1.5 cm ~ 2 cm Recommended power supply (not included): single 3.7V Li-ion battery or two 18650 batteries, phone battery (>2000mAh, protection card must be removed), NiCd/Ni-MH battery, 4V or 6V Pb-acid battery (6V can provide better effect) 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, the way to judge whether a battery capacity is sufficient to produce maximum power is to measure the battery voltage during arc production. This is the measured voltage is about 6V, then it can produce maximum power. 1 x High Voltage Generator Package List