The 25-30kV DC Generator
By Jean-Louis Naudin
created on April 16, 1999 - JLN Labs - Last update Oct 30, 2001

This High Voltage power supply is able to generate up to 25-30kV DC Output from a 12-24v DC input. With a fully adjustable DC input power supply (0-24V/4A), it is possible to adjust the HV output between 5 to 30kV. This HV power supply use a common flyback driver circuit with two 2N3055 power transistors as a push-pull oscillator. A common flyback transformer from an old TV/monitor can be used, the transformer HV output is connected to a 30kv Voltage tripler which commonly used in all color TV monitors.

This HV Power supply is a very useful tool for your lab and this can help you to test by yourself the EHD-Flying Saucer...

For additional infos about the 30KV Tripler,
see also : http://www.mathematik.uni-marburg.de/~kronjaeg/hv/hv/src/TVcasc/index.html

The primary and the feedback coils must be wound on the opposite side of the flyback transformer ( see the picture below )


The first setup with a old Siemens tripler


The latest setup with a HV capacitor and a new tripler


If you have some difficulties to find the 100pF/10 KV capacitor, the diagram above works also well.
Don't forget that the Pin D is not connected in this case.

BE CAREFUL, USE EXTREME CAUTION !!!, this device use High Voltage, ALWAYS switch off the input and discharge the output to the ground through 10k/2W resistor before touch it. These plans are not intended for the inexperienced. User of this document should be very carefull and experienced in High-Voltage electronics to try anything out ! If you do it the risk of any results is just yours. I take no responsibility of anything that might happen.

See also :

Email : [email protected]

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