Four 470pF 20kV 60kVAr Capacitors, connected in parallel for a total value of 1880pF. They are quite large, the total length of the unit is around 420mm and weighs around 2kg ! I have connected them with 25mm x 1.5mm aluminium strips, hopefully they will be big enough for the … Continue reading…
I am using the same control box that was built for my spark gap coil as it was well built and can handle the current easily.
Lashing it together and first tests… Thar she blows !! Not much, just 15mm, but oh so important !! Probably the worst primary and feedback coils ever wound ! It just goes to show how wildly you can flaunt the basic design concepts and still get sparks. The birds nest … Continue reading…
After a bit of tuning, results were improving. It was still running at 50v input because even at that low voltage, it was drawing 4A and my control box was only built for 5! Rebuilding the control box will have to be done next so that I can increase the … Continue reading…
Feeling a bit bold, I removed the earthed wire target and turned the input up to the limit of my control box – about 110v at 5A. The long streamer running up to the top left is about 100mm long.
After getting a bit fed up with smalltime results, I decided to rebuild my power supply section. I am now running the plate and grid2 from seperate, variac controlled microwave oven transformers, both running standard level shifter setups. This means that I have got much more than enough power to … Continue reading…