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Registered Member #580
Joined: Mon Mar 12 2007, 03:17PM
Location: Melbourne, Australia
Posts: 410
So i decided to test a new topload (the old one was 14.5cm diameter by 3cm high) on my SSTC secondary (specs below). keeping the same circuit, and readjusting the circuit for resonance, with 12V input it has gone from producing flyback like arcs to ground to less then 1mm ones and can not light a CFL unless placed 1cm from the topload. At 330v the streamers are 2mm (compared to at least 15cm before). Is this meant to happen? if so, why? What steps should i take to get this topload working well?
Secondary Height: 32.7 cm Secondary Diameter: 6 cm Secondary Wire Thickness: 0.125 mm
Registered Member #1739
Joined: Fri Oct 03 2008, 10:05AM
Location: Moscow, Russia
Posts: 261
Something is totally wrong. Either you've set up the Fres incorrectly (did you try adjusting it on lower voltages using a neon bulb to tweak it?), or there's some bad connection in the secondary - or there is actually something wrong with the load itself. There are steel corona rings of a hv substation some people managed to get, if you've got one that could be the reason. But still it seems there's something with the ground or the other connections.
Registered Member #580
Joined: Mon Mar 12 2007, 03:17PM
Location: Melbourne, Australia
Posts: 410
It it not the frequency, i have been through the entire range. I do not own or use any corona rings. Its not just streamer formation, it does not even light a CFL very well or arc/spark to ground i am using an H bridge of IRFP450 mosfets with a single GDT drive
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new SSTC topload reducing performance
