This is my first flyback experiments. The video shows the first arc I made from a flyback transformer, my 'prototype', then it built into a box, and me frying anything I can find! The flyback is from an old black and white portable television. Im hoping to find a better flyback soon, and build a better driver circit. Enjoy!
Thanks to the helpers at 4hv.org !!
Here, we set up a real small station, using the MFJ-9420 20m monoband tranciever, and a dipole antenna at head height in some small trees. Managed to contact a few stations in about half an hour, including PD7X, RU3VV and J5MS. Located in Hornchurch, East London. JO01CM. Hard work sometimes, but its great what you can do with such a simple setup! 73.
Pics of my balun: http://www.m0ukd.com /
This is a few clips of my first ZVS Driver running a flyback. Supply is 14v with 5+5 turn primary.
A few people have asked for the diagram. It is the Mazzilli Driver, here is the schematic: http://sparkie.ukdir t.com/hv/Flyback_dri ver.jpg
The 400+v fast diodes I used are UF4007. Here is a picture of my built unit: http://sparkie.ukdir t.com/hv/zvs_driver_ new.jpg
We use a lifting kite to support an Amatuer Radio long wire antenna. At the end of the day, we tied my camera to the kite, set it to record video, and let it go up for a few minites. This is the result.
Here is a very simple cell to produce Hydrogen (66%) and Oxygen (33%) gas, which is highly explosive! Its just made of two 4" stainless steel screws and some salt water. Power is 12v at low current. The last one is a loud bang, doesn't sound loud on the camera :(
Two days of heavy rain overnight on 25th & 26th May 2008 caused the River Ingrebourne to go over the banks and over the pathway and surrounding areas. A video of Dave and I riding through it. Taken by Dave.
A clip of my MFJ-949E arcing with 70w into a bad antenna at 1850KHz. It flashes on and off because when the radio detects a high vswr, it cuts the power, so the flashes are not continuous. This tuner is fine with normal tuning, but this antenna is way too small for 160m :)
![15kV 20mA 20kHz Neon Sign Transformer arc\](http://img.youtube.com/vi/f8XwSF5sLQk/2.jpg "15kV 20mA 20kHz Neon Sign Transformer arc\")
