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Registered Member #95
Joined: Thu Feb 09 2006, 04:57PM
Location: Norway
Posts: 1308
Pictures work fine here (Opera).
Great SSTC Reaching, looks like a commercial product! The discrete GDT driver is an excellent idea, how high of frequencies can it be run at? The parts count is low as well, so its a great substitute for a driving IC. I've been thinking of using something similar for my SSTC.
Registered Member #76
Joined: Thu Feb 09 2006, 10:04AM
Location: Hemer, Germany
Posts: 458
thanks steve, my site is the biggest hv community here in germany with over 260 members
i´ve tested the discrete driver up to 1mhz with good results, but i think thats not the maximum. with a similar testsetup i was able to drive a small irg4bc20ud igbt with 4 mhz with a crystal oscillator. the coil is running pretty well and within the whole setup and testing time no blown parts. the only disadvantage is that you have to use a 1:2 gdt or more to get the gate voltage you need, but maybe you can supply the discrete driver with more than 15 volts to solve this.
yeah and i wanted it to look professional cause i play with the thought to sell some, maybe
its a lot of fun to play around with this coil, dont know why i never saw a halfwave interruptet sstc before but its one of the coolest things, it sounds like a bass guitar or a scream or anything you want, just throw the knobs around and see what happens. long thick sword like streamers or thin small noisy ones or a 140bpm base discharge, hehe a nice toy
in the later version of this coil i want to add a switch for CW and Interrupted mode, its already on the pcb but i was to fast and forgot to add the switch on my front
Update
made a few changes on my design, added a 1,5µF capacitor in series to the gdt primary, changed the irfp460s with 30g60kd igbts and added a 220pf capacitor to the oscillator, now the sparklenght is nearly doubled ... pics coming soon
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New ISSTC with discrete GDT driver
The discrete GDT driver is an excellent idea, how high of frequencies can it be run at? The parts count is low as well, so its a great substitute for a driving IC. I've been thinking of using something similar for my SSTC.
The coil looks great, and your site looks pretty neat too.
