The high voltage generator is made according to the Tesla coil theory, it is small and has high efficiency, it allows you to get 15kV with input voltage of 3.7-4.2V. The high voltage transformer has a wide range of applications and can be used as a high voltage source for scientific experiments and as a negative ion generator. Technical data dimensions: 63x25mm input voltage: 3.7V - 4.2V DC current: <1.5A output voltage: 15kV wires (green, red): ∼5 cm output cables (2 x red): ∼8 cm CAUTION - the generator is a dangerous device and you should be particularly careful when working with it! https://elecena.pl/product/22619126/15kv-high-voltage-generator-transformer-diy-kit 2023-02-22 https://elecena.pl/product/22619126/15kv-high-voltage-generator-transformer-diy-kit 2025-10-29