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Registered Member #229
Joined: Tue Feb 21 2006, 07:33PM
Location: Romania
Posts: 506
Hi forum
I made a few grid network modifications preparing the setup for full CW (I collecting parts for a new power source). I am runing now with a 0.56 Kohm high power grid resistor (made with different size high watage resistor).
Registered Member #1875
Joined: Sun Dec 21 2008, 06:36PM
Location:
Posts: 635
That's awesome! The sparks look like the ones I got from my CW sstc that ran at like 450kHz or so... only a lot bigger and meaner! Excellent work. That thing must be tuned REALLY well. Quite the primary you got there!
Registered Member #229
Joined: Tue Feb 21 2006, 07:33PM
Location: Romania
Posts: 506
The new source is ready.
I was lucky enough to get these nice HV diodes (75 kV @ 100 mA):
The new PSU is a Greinacher cascade. The voltage from the 4 MOTs is doubled. The cascade capacitors and the filter caps reduce ripple. I used ferite beads as RF suppressors on the output HV cables:
Banned on 1/22/2011 for repeated rule violations after multiple warnings. Registered Member #3299
Joined: Sat Oct 09 2010, 08:11PM
Location: Bantown, USA
Posts: 220
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GU5B VTTC rebuilt
