My first DRSSTC

[Late]

Hello

Im a 18y.o from Latvia and started (also finished) building my first DRSSTC when i was 17. It all was a very good and interesting learning experience and all worked out better than i thought it would so i decided to post about it on here.

Here are the specs:

-overall size of the DRSSTC is 320x320x900mm. F_res of secondary unloaded 86.96kHz and 71.48kHz loaded with a 2m wire simulating a streamer. Bus voltage is 325VDC rectified from single phase 230V mains. OCD is currently set at 800amps. My DRSSTC can produce up to 2 meter long arcs. After 5 minutes of continuous operation in music mode at 65uS on time most of the DRSSTC is barely warm with primary being hot(Inverter 25C, MMC 30C, primary around 60C).

 -UD2.7C THT driver with phase lead and cascaded current transformer with total ratio of 1:1024 The GDT was wound with 11 turns of CAT 5e cable on a  42.1x25.9x13mm 3E25 ferrite core

 -CM300 H-bridge inverter with an 350V 6000uF bus capacitor and 150nF 2kv bypass capacitor to ground and 10kΩ 25W loading resistor

 -440nF 6kv MMC made from 2 220nF 6kv dawncaps in paralel with 10MΩ 3W resistor across it
 
-8 turn primary tapped at 6.9 turns made from 6mm copper tube with 5mm between turns (edge to edge)

 -110*480mm PP pipe secondary with 2400 turns of 0.2mm enameled copper wire
 
-160x540mm top load made from some 160mm aluminum air duct



Here are some pics of the DRSSTC:














Here are some scope shots:

Green and blue are the gate signals 10V/div
Yellow is primary current 200A/div



Here are some long exposure arc shots:








Here are some vids of the coil running:

Late

[Hydron]

Looks very nice for a first build!

[Late]

Looks very nice for a first build!

Thank you! I always make my builds the best i can. And I've learned a lot about power electronics and tesla coils from making this coil.