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Registered Member #2018
Joined: Tue Mar 10 2009, 09:56AM
Location: Switzerland
Posts: 74
Dear All
I just wanted to show my latest project, a VTTC with 2 GU81M tubes.
The idea and schematic came from this site, thanks to the autor!
Whole Setup. High voltage power supply and VTTC are splitted up for better handling.
Dual-MOT power supply with some Microwave-Capacitors and a chaine of 12 Diodes with 1600V / 3A each for a total of 19.2kV @3A.
VTTC itself with 2MHz resonator in the background, 2 filament transformers in the foreground (for each tube one toroidal heater-transformer). The heaters are connected each with a 1-Ohm-Power-Resistor for limiting the current in the first moment. After preheating the filaments these resistors are bridged with a big industrial relay. The grey doorknob capacitor is the primary capacitor (now 2x 470pF in series for a total of 235pF). The black heat sink is for the 2 470-Ohm/100W-Feedback-Resistors for the grids.
Some sparks/arcs:
For more information please ask or take a look to my website I know the pics are too big at the moment but I can't resize them immediately. don't worry, the moderators can :P I will do this as soon as possible. Thanx for your understanding.
Registered Member #2018
Joined: Tue Mar 10 2009, 09:56AM
Location: Switzerland
Posts: 74
Thanks for your answer, HFsstc-freak Well seen, you're absolutely right, I've got two ALC-60X and a Melles Griot-643 Argon-Krypton-Laser and some HeNes. Gaslasers and high voltage is imho a nice combination The lasers are also described on my website, if you are interested.
Registered Member #2018
Joined: Tue Mar 10 2009, 09:56AM
Location: Switzerland
Posts: 74
Thanks for your answers, HFsstc-freak and vasil
@HFsstc-freak: Your dreams will come true, I'm sure Multiline argons are not difficult to find... a good ALC-60X will do Argon-Krypton-Whitelight is a bit more difficult to find... but possible as well. I had a thread about mine:
@vasil: In my opinion it doesn't matter if there is a lot of current or a lot of voltage: main thing is a lot of power I love these GU81 tubes They could do much more than this, but my variac is a bit weak Love your DRSSTC vid Very nice indeed!
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Dual GU81M VTTC
I know the pics are too big at the moment but I can't resize them immediately. don't worry, the moderators can :P I will do this as soon as possible. Thanx for your understanding.
*drool*
The lasers are also described on my website, if you are interested.
